./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/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/NonTermination4.c -s /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:30,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:30,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:30,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:30,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:30,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:30,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:30,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:30,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:30,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:30,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:30,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:30,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:30,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:30,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:30,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:30,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:30,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:30,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:30,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:30,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:30,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:30,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:30,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:30,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:30,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:30,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:30,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:30,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:30,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:30,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:30,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:30,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:30,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:30,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:30,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:30,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:30,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:30,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:30,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:30,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:30,667 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-10-22 08:56:30,683 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:30,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:30,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:30,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:30,685 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:30,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:30,686 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:56:30,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:30,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:30,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:56:30,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:56:30,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:56:30,689 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 08:56:30,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:56:30,689 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:30,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:56:30,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:30,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:30,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:56:30,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:56:30,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:56:30,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:30,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:56:30,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:56:30,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:30,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:56:30,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:56:30,692 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/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:30,728 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:30,738 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:30,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:30,748 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:30,749 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:30,749 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/NonTermination4.c [2019-10-22 08:56:30,798 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/bin/uautomizer/data/09045e5f0/9bca329d9da94c808f9e97c1307536e0/FLAG76f6a2421 [2019-10-22 08:56:31,174 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:31,174 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/sv-benchmarks/c/termination-crafted/NonTermination4.c [2019-10-22 08:56:31,179 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/bin/uautomizer/data/09045e5f0/9bca329d9da94c808f9e97c1307536e0/FLAG76f6a2421 [2019-10-22 08:56:31,191 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/bin/uautomizer/data/09045e5f0/9bca329d9da94c808f9e97c1307536e0 [2019-10-22 08:56:31,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:31,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:56:31,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:31,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:31,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:31,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d39d888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31, skipping insertion in model container [2019-10-22 08:56:31,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,211 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:31,224 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:31,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:31,350 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:31,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:31,427 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:31,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31 WrapperNode [2019-10-22 08:56:31,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:31,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:31,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:56:31,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:56:31,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:31,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:31,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:31,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:31,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:31,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:31,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:31,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:31,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:31,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:31,693 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:31,694 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 08:56:31,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:31 BoogieIcfgContainer [2019-10-22 08:56:31,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:31,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:56:31,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:56:31,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:56:31,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:56:31" (1/3) ... [2019-10-22 08:56:31,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8862ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:31, skipping insertion in model container [2019-10-22 08:56:31,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (2/3) ... [2019-10-22 08:56:31,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8862ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:31, skipping insertion in model container [2019-10-22 08:56:31,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:31" (3/3) ... [2019-10-22 08:56:31,705 INFO L109 eAbstractionObserver]: Analyzing ICFG NonTermination4.c [2019-10-22 08:56:31,713 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:56:31,719 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-22 08:56:31,730 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-22 08:56:31,752 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:56:31,752 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:56:31,753 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:56:31,753 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:31,753 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:31,753 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:56:31,753 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:31,753 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:56:31,766 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-10-22 08:56:31,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 08:56:31,771 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:31,772 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-10-22 08:56:31,774 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:31,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:31,779 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-10-22 08:56:31,787 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:31,787 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603962734] [2019-10-22 08:56:31,787 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:31,787 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:31,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:31,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603962734] [2019-10-22 08:56:31,887 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:31,887 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-10-22 08:56:31,887 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285455558] [2019-10-22 08:56:31,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:31,891 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:31,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:31,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:31,906 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-10-22 08:56:31,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:31,946 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-10-22 08:56:31,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:31,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-10-22 08:56:31,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:31,957 INFO L225 Difference]: With dead ends: 22 [2019-10-22 08:56:31,957 INFO L226 Difference]: Without dead ends: 13 [2019-10-22 08:56:31,960 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 [2019-10-22 08:56:31,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-22 08:56:31,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-10-22 08:56:31,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 08:56:31,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-22 08:56:31,992 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2019-10-22 08:56:31,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:31,992 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-22 08:56:31,992 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:31,993 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-22 08:56:31,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 08:56:31,993 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:31,993 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 08:56:31,993 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:31,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:31,994 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-10-22 08:56:31,994 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:31,994 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118469481] [2019-10-22 08:56:31,994 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:31,995 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:31,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:32,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:32,009 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118469481] [2019-10-22 08:56:32,010 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:32,010 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-10-22 08:56:32,010 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591488971] [2019-10-22 08:56:32,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:32,011 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:32,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:32,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:32,012 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2019-10-22 08:56:32,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:32,023 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-10-22 08:56:32,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:32,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-10-22 08:56:32,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:32,024 INFO L225 Difference]: With dead ends: 12 [2019-10-22 08:56:32,024 INFO L226 Difference]: Without dead ends: 11 [2019-10-22 08:56:32,025 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 [2019-10-22 08:56:32,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-10-22 08:56:32,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-10-22 08:56:32,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-10-22 08:56:32,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-10-22 08:56:32,027 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2019-10-22 08:56:32,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:32,027 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-10-22 08:56:32,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:32,028 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-10-22 08:56:32,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 08:56:32,028 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:32,028 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 08:56:32,029 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:32,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:32,029 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2019-10-22 08:56:32,029 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:32,029 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345768489] [2019-10-22 08:56:32,030 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:32,030 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:32,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:32,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345768489] [2019-10-22 08:56:32,048 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:32,048 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-10-22 08:56:32,048 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684915811] [2019-10-22 08:56:32,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:32,049 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:32,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:32,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:32,050 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2019-10-22 08:56:32,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:32,064 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-10-22 08:56:32,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:32,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-10-22 08:56:32,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:32,065 INFO L225 Difference]: With dead ends: 15 [2019-10-22 08:56:32,065 INFO L226 Difference]: Without dead ends: 14 [2019-10-22 08:56:32,066 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 [2019-10-22 08:56:32,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-22 08:56:32,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-10-22 08:56:32,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-22 08:56:32,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-10-22 08:56:32,069 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2019-10-22 08:56:32,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:32,069 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-10-22 08:56:32,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:32,069 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-10-22 08:56:32,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 08:56:32,070 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:32,070 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:56:32,070 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:32,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:32,070 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2019-10-22 08:56:32,070 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:32,071 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959103420] [2019-10-22 08:56:32,071 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:32,071 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:32,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:32,132 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959103420] [2019-10-22 08:56:32,132 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:32,132 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-10-22 08:56:32,132 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193198082] [2019-10-22 08:56:32,132 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:32,133 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:32,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:32,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:32,133 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2019-10-22 08:56:32,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:32,143 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-10-22 08:56:32,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:32,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-10-22 08:56:32,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:32,144 INFO L225 Difference]: With dead ends: 13 [2019-10-22 08:56:32,144 INFO L226 Difference]: Without dead ends: 12 [2019-10-22 08:56:32,144 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 [2019-10-22 08:56:32,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-22 08:56:32,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-22 08:56:32,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 08:56:32,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-22 08:56:32,147 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2019-10-22 08:56:32,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:32,147 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-22 08:56:32,148 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:32,148 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-22 08:56:32,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 08:56:32,148 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:32,149 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:32,149 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:32,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:32,150 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2019-10-22 08:56:32,150 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:32,150 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543291932] [2019-10-22 08:56:32,150 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:32,150 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:32,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:32,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:32,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543291932] [2019-10-22 08:56:32,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805062061] [2019-10-22 08:56:32,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:32,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:56:32,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:32,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:32,242 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:32,243 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-10-22 08:56:32,243 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017984661] [2019-10-22 08:56:32,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:56:32,244 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:32,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:56:32,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:32,244 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2019-10-22 08:56:32,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:32,267 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-10-22 08:56:32,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:56:32,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-10-22 08:56:32,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:32,268 INFO L225 Difference]: With dead ends: 17 [2019-10-22 08:56:32,268 INFO L226 Difference]: Without dead ends: 16 [2019-10-22 08:56:32,268 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 [2019-10-22 08:56:32,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-22 08:56:32,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-10-22 08:56:32,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-22 08:56:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-10-22 08:56:32,271 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2019-10-22 08:56:32,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:32,272 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-10-22 08:56:32,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:56:32,272 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-10-22 08:56:32,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 08:56:32,273 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:32,273 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-10-22 08:56:32,473 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:32,474 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:32,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:32,474 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2019-10-22 08:56:32,474 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:32,475 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476218379] [2019-10-22 08:56:32,475 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:32,475 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:32,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:32,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:32,501 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476218379] [2019-10-22 08:56:32,501 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494554172] [2019-10-22 08:56:32,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:32,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:56:32,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:32,537 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:32,537 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-10-22 08:56:32,537 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644473878] [2019-10-22 08:56:32,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:56:32,538 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:32,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:56:32,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:32,538 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2019-10-22 08:56:32,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:32,565 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-10-22 08:56:32,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:56:32,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-22 08:56:32,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:32,567 INFO L225 Difference]: With dead ends: 19 [2019-10-22 08:56:32,567 INFO L226 Difference]: Without dead ends: 18 [2019-10-22 08:56:32,567 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 [2019-10-22 08:56:32,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-22 08:56:32,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-10-22 08:56:32,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 08:56:32,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-10-22 08:56:32,570 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2019-10-22 08:56:32,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:32,571 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-10-22 08:56:32,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:56:32,571 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-10-22 08:56:32,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 08:56:32,571 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:32,571 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1] [2019-10-22 08:56:32,772 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:32,772 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:32,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:32,772 INFO L82 PathProgramCache]: Analyzing trace with hash 745486881, now seen corresponding path program 2 times [2019-10-22 08:56:32,773 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:32,773 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048421301] [2019-10-22 08:56:32,773 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:32,773 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:32,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:32,835 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048421301] [2019-10-22 08:56:32,835 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045023465] [2019-10-22 08:56:32,835 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:32,862 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:56:32,862 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:32,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:56:32,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:32,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:32,892 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:32,892 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-10-22 08:56:32,892 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152852979] [2019-10-22 08:56:32,893 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:56:32,893 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:32,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:56:32,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:56:32,893 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2019-10-22 08:56:32,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:32,935 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-10-22 08:56:32,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:56:32,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-10-22 08:56:32,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:32,937 INFO L225 Difference]: With dead ends: 22 [2019-10-22 08:56:32,937 INFO L226 Difference]: Without dead ends: 21 [2019-10-22 08:56:32,937 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 [2019-10-22 08:56:32,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-22 08:56:32,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-10-22 08:56:32,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 08:56:32,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-10-22 08:56:32,944 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2019-10-22 08:56:32,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:32,944 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-10-22 08:56:32,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:56:32,944 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-10-22 08:56:32,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:56:32,945 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:32,945 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2019-10-22 08:56:33,147 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:33,147 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:33,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:33,148 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2019-10-22 08:56:33,148 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:33,148 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888320500] [2019-10-22 08:56:33,148 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:33,148 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:33,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:33,193 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888320500] [2019-10-22 08:56:33,194 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300318670] [2019-10-22 08:56:33,194 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:33,211 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:56:33,212 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:33,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:56:33,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:33,238 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:33,238 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:33,239 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-10-22 08:56:33,239 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508168548] [2019-10-22 08:56:33,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:56:33,239 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:33,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:56:33,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:56:33,241 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2019-10-22 08:56:33,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:33,260 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-10-22 08:56:33,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:56:33,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-10-22 08:56:33,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:33,261 INFO L225 Difference]: With dead ends: 24 [2019-10-22 08:56:33,261 INFO L226 Difference]: Without dead ends: 23 [2019-10-22 08:56:33,261 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 [2019-10-22 08:56:33,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-22 08:56:33,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-10-22 08:56:33,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-22 08:56:33,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-10-22 08:56:33,264 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2019-10-22 08:56:33,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:33,264 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-10-22 08:56:33,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:56:33,265 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-10-22 08:56:33,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 08:56:33,265 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:33,265 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1] [2019-10-22 08:56:33,466 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:33,466 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:33,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:33,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1960222447, now seen corresponding path program 3 times [2019-10-22 08:56:33,467 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:33,467 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449065512] [2019-10-22 08:56:33,467 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:33,467 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:33,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:33,543 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:33,543 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449065512] [2019-10-22 08:56:33,543 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143572696] [2019-10-22 08:56:33,543 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:33,563 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-22 08:56:33,563 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:33,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:56:33,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:33,625 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:33,625 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:33,626 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-10-22 08:56:33,626 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664023291] [2019-10-22 08:56:33,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:56:33,626 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:33,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:56:33,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:56:33,627 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2019-10-22 08:56:33,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:33,667 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-10-22 08:56:33,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:56:33,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-10-22 08:56:33,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:33,669 INFO L225 Difference]: With dead ends: 27 [2019-10-22 08:56:33,669 INFO L226 Difference]: Without dead ends: 26 [2019-10-22 08:56:33,669 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 [2019-10-22 08:56:33,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-22 08:56:33,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-10-22 08:56:33,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-22 08:56:33,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-10-22 08:56:33,673 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 18 [2019-10-22 08:56:33,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:33,674 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-10-22 08:56:33,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:56:33,674 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-10-22 08:56:33,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-22 08:56:33,674 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:33,674 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2019-10-22 08:56:33,876 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:33,876 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:33,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:33,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2019-10-22 08:56:33,877 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:33,877 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96446265] [2019-10-22 08:56:33,877 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:33,877 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:33,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:33,928 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96446265] [2019-10-22 08:56:33,928 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456631960] [2019-10-22 08:56:33,929 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:33,964 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-22 08:56:33,964 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:33,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:56:33,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:33,998 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:33,998 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-10-22 08:56:33,998 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484231921] [2019-10-22 08:56:33,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:56:33,998 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:33,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:56:33,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:56:33,999 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 6 states. [2019-10-22 08:56:34,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:34,017 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-10-22 08:56:34,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:56:34,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-10-22 08:56:34,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:34,018 INFO L225 Difference]: With dead ends: 29 [2019-10-22 08:56:34,018 INFO L226 Difference]: Without dead ends: 28 [2019-10-22 08:56:34,018 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 [2019-10-22 08:56:34,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-22 08:56:34,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-10-22 08:56:34,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-22 08:56:34,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-10-22 08:56:34,022 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2019-10-22 08:56:34,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:34,022 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-10-22 08:56:34,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:56:34,022 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-10-22 08:56:34,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 08:56:34,023 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:34,023 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1] [2019-10-22 08:56:34,223 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:34,224 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:34,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:34,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1492388577, now seen corresponding path program 4 times [2019-10-22 08:56:34,224 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:34,224 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172393833] [2019-10-22 08:56:34,224 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,224 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:34,271 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:34,271 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172393833] [2019-10-22 08:56:34,271 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790612918] [2019-10-22 08:56:34,271 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:34,296 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 08:56:34,296 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:34,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:56:34,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:34,327 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:34,327 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-10-22 08:56:34,327 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622367325] [2019-10-22 08:56:34,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:56:34,328 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:34,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:56:34,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:56:34,329 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 7 states. [2019-10-22 08:56:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:34,359 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2019-10-22 08:56:34,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:56:34,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2019-10-22 08:56:34,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:34,360 INFO L225 Difference]: With dead ends: 32 [2019-10-22 08:56:34,360 INFO L226 Difference]: Without dead ends: 31 [2019-10-22 08:56:34,361 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 [2019-10-22 08:56:34,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-22 08:56:34,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-10-22 08:56:34,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 08:56:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2019-10-22 08:56:34,364 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2019-10-22 08:56:34,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:34,365 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2019-10-22 08:56:34,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:56:34,365 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2019-10-22 08:56:34,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 08:56:34,365 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:34,366 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2019-10-22 08:56:34,566 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:34,566 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:34,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:34,567 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2019-10-22 08:56:34,567 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:34,567 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229015464] [2019-10-22 08:56:34,567 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,567 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:34,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229015464] [2019-10-22 08:56:34,632 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597866908] [2019-10-22 08:56:34,632 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:34,655 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 08:56:34,656 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:34,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:56:34,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:34,683 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:34,684 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:34,684 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-10-22 08:56:34,684 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355884927] [2019-10-22 08:56:34,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:56:34,684 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:34,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:56:34,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:56:34,685 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 7 states. [2019-10-22 08:56:34,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:34,707 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2019-10-22 08:56:34,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:56:34,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-10-22 08:56:34,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:34,708 INFO L225 Difference]: With dead ends: 34 [2019-10-22 08:56:34,708 INFO L226 Difference]: Without dead ends: 33 [2019-10-22 08:56:34,708 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 [2019-10-22 08:56:34,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-22 08:56:34,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-10-22 08:56:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-22 08:56:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2019-10-22 08:56:34,712 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 25 [2019-10-22 08:56:34,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:34,712 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2019-10-22 08:56:34,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:56:34,713 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2019-10-22 08:56:34,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-22 08:56:34,713 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:34,713 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1] [2019-10-22 08:56:34,914 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:34,914 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:34,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:34,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1300871633, now seen corresponding path program 5 times [2019-10-22 08:56:34,915 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:34,915 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548576834] [2019-10-22 08:56:34,915 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,915 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:34,970 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548576834] [2019-10-22 08:56:34,970 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375289724] [2019-10-22 08:56:34,970 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:34,998 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-10-22 08:56:34,998 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:34,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 08:56:35,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:35,031 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:35,032 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:35,032 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-10-22 08:56:35,032 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228803179] [2019-10-22 08:56:35,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:56:35,033 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:35,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:56:35,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:56:35,033 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2019-10-22 08:56:35,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:35,078 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2019-10-22 08:56:35,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:56:35,079 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2019-10-22 08:56:35,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:35,079 INFO L225 Difference]: With dead ends: 37 [2019-10-22 08:56:35,079 INFO L226 Difference]: Without dead ends: 36 [2019-10-22 08:56:35,080 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 [2019-10-22 08:56:35,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-22 08:56:35,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2019-10-22 08:56:35,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-22 08:56:35,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2019-10-22 08:56:35,084 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2019-10-22 08:56:35,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:35,084 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2019-10-22 08:56:35,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:56:35,085 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2019-10-22 08:56:35,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 08:56:35,085 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:35,085 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2019-10-22 08:56:35,286 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:35,286 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:35,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:35,287 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2019-10-22 08:56:35,287 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:35,287 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403895548] [2019-10-22 08:56:35,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:35,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:35,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:35,334 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403895548] [2019-10-22 08:56:35,334 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472259672] [2019-10-22 08:56:35,334 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:35,355 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-10-22 08:56:35,355 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:35,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 08:56:35,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:35,402 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:35,402 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-10-22 08:56:35,402 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869376245] [2019-10-22 08:56:35,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:56:35,403 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:35,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:56:35,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:56:35,403 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 8 states. [2019-10-22 08:56:35,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:35,436 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2019-10-22 08:56:35,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:56:35,436 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-10-22 08:56:35,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:35,437 INFO L225 Difference]: With dead ends: 39 [2019-10-22 08:56:35,437 INFO L226 Difference]: Without dead ends: 38 [2019-10-22 08:56:35,437 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 [2019-10-22 08:56:35,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-22 08:56:35,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2019-10-22 08:56:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 08:56:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2019-10-22 08:56:35,445 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2019-10-22 08:56:35,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:35,446 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2019-10-22 08:56:35,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:56:35,446 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2019-10-22 08:56:35,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 08:56:35,446 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:35,446 INFO L380 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1] [2019-10-22 08:56:35,647 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:35,647 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:35,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:35,648 INFO L82 PathProgramCache]: Analyzing trace with hash 758836129, now seen corresponding path program 6 times [2019-10-22 08:56:35,655 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:35,656 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926640043] [2019-10-22 08:56:35,656 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:35,657 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:35,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:35,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926640043] [2019-10-22 08:56:35,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595003005] [2019-10-22 08:56:35,718 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:35,741 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-10-22 08:56:35,741 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:35,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:56:35,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:35,791 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:35,791 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:35,791 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-10-22 08:56:35,791 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135521733] [2019-10-22 08:56:35,792 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 08:56:35,792 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:35,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 08:56:35,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:56:35,792 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 9 states. [2019-10-22 08:56:35,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:35,832 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2019-10-22 08:56:35,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 08:56:35,833 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2019-10-22 08:56:35,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:35,834 INFO L225 Difference]: With dead ends: 42 [2019-10-22 08:56:35,834 INFO L226 Difference]: Without dead ends: 41 [2019-10-22 08:56:35,834 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:56:35,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-22 08:56:35,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-10-22 08:56:35,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-22 08:56:35,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2019-10-22 08:56:35,839 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 33 [2019-10-22 08:56:35,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:35,839 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2019-10-22 08:56:35,839 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 08:56:35,839 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2019-10-22 08:56:35,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-22 08:56:35,840 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:35,840 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2019-10-22 08:56:36,040 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:36,041 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:36,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:36,041 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2019-10-22 08:56:36,041 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:36,041 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722237745] [2019-10-22 08:56:36,041 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:36,041 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:36,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:36,112 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722237745] [2019-10-22 08:56:36,112 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356044978] [2019-10-22 08:56:36,112 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:36,147 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-10-22 08:56:36,148 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:36,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:56:36,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:36,193 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:36,193 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:36,193 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-10-22 08:56:36,193 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050015410] [2019-10-22 08:56:36,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 08:56:36,194 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:36,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 08:56:36,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:56:36,194 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 9 states. [2019-10-22 08:56:36,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:36,218 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2019-10-22 08:56:36,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 08:56:36,218 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2019-10-22 08:56:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:36,219 INFO L225 Difference]: With dead ends: 44 [2019-10-22 08:56:36,219 INFO L226 Difference]: Without dead ends: 43 [2019-10-22 08:56:36,219 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 [2019-10-22 08:56:36,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-22 08:56:36,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-10-22 08:56:36,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-22 08:56:36,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2019-10-22 08:56:36,222 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2019-10-22 08:56:36,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:36,223 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2019-10-22 08:56:36,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 08:56:36,223 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2019-10-22 08:56:36,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 08:56:36,223 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:36,223 INFO L380 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1] [2019-10-22 08:56:36,424 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:36,424 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:36,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:36,425 INFO L82 PathProgramCache]: Analyzing trace with hash 522050927, now seen corresponding path program 7 times [2019-10-22 08:56:36,425 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:36,425 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097183653] [2019-10-22 08:56:36,425 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:36,425 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:36,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:36,495 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:36,495 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097183653] [2019-10-22 08:56:36,495 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644654243] [2019-10-22 08:56:36,495 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:36,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 08:56:36,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:36,566 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:36,567 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:36,567 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-10-22 08:56:36,567 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602714884] [2019-10-22 08:56:36,567 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 08:56:36,567 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:36,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 08:56:36,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:56:36,567 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 10 states. [2019-10-22 08:56:36,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:36,601 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2019-10-22 08:56:36,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 08:56:36,605 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-10-22 08:56:36,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:36,606 INFO L225 Difference]: With dead ends: 47 [2019-10-22 08:56:36,606 INFO L226 Difference]: Without dead ends: 46 [2019-10-22 08:56:36,606 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:56:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-22 08:56:36,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2019-10-22 08:56:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-22 08:56:36,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2019-10-22 08:56:36,610 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 38 [2019-10-22 08:56:36,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:36,610 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2019-10-22 08:56:36,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 08:56:36,610 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2019-10-22 08:56:36,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-22 08:56:36,611 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:36,611 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2019-10-22 08:56:36,811 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:36,812 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:36,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:36,812 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2019-10-22 08:56:36,812 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:36,812 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336677080] [2019-10-22 08:56:36,812 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:36,812 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:36,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:36,881 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336677080] [2019-10-22 08:56:36,881 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803114986] [2019-10-22 08:56:36,881 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:36,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 08:56:36,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:36,971 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:36,971 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:36,971 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-10-22 08:56:36,971 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129055173] [2019-10-22 08:56:36,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 08:56:36,971 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:36,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 08:56:36,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:56:36,972 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 10 states. [2019-10-22 08:56:37,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:37,003 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2019-10-22 08:56:37,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 08:56:37,003 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2019-10-22 08:56:37,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:37,004 INFO L225 Difference]: With dead ends: 49 [2019-10-22 08:56:37,004 INFO L226 Difference]: Without dead ends: 48 [2019-10-22 08:56:37,004 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 [2019-10-22 08:56:37,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-22 08:56:37,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2019-10-22 08:56:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-22 08:56:37,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2019-10-22 08:56:37,007 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2019-10-22 08:56:37,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:37,007 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2019-10-22 08:56:37,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 08:56:37,007 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2019-10-22 08:56:37,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-22 08:56:37,007 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:37,009 INFO L380 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1] [2019-10-22 08:56:37,209 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:37,210 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:37,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:37,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1443898271, now seen corresponding path program 8 times [2019-10-22 08:56:37,210 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:37,210 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933530150] [2019-10-22 08:56:37,210 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:37,211 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:37,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:37,293 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:37,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933530150] [2019-10-22 08:56:37,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140598588] [2019-10-22 08:56:37,293 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:37,321 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:56:37,321 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:37,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 08:56:37,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:37,393 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:37,393 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:37,393 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-10-22 08:56:37,393 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303787335] [2019-10-22 08:56:37,394 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-22 08:56:37,394 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:37,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-22 08:56:37,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:56:37,395 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 11 states. [2019-10-22 08:56:37,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:37,443 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2019-10-22 08:56:37,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 08:56:37,443 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2019-10-22 08:56:37,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:37,444 INFO L225 Difference]: With dead ends: 52 [2019-10-22 08:56:37,444 INFO L226 Difference]: Without dead ends: 51 [2019-10-22 08:56:37,444 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 [2019-10-22 08:56:37,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-10-22 08:56:37,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2019-10-22 08:56:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-22 08:56:37,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2019-10-22 08:56:37,449 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 43 [2019-10-22 08:56:37,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:37,449 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2019-10-22 08:56:37,449 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-22 08:56:37,449 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2019-10-22 08:56:37,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-22 08:56:37,450 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:37,450 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2019-10-22 08:56:37,651 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:37,651 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:37,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:37,651 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2019-10-22 08:56:37,651 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:37,652 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535697355] [2019-10-22 08:56:37,652 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:37,652 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:37,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:37,725 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:37,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535697355] [2019-10-22 08:56:37,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893311196] [2019-10-22 08:56:37,725 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:37,747 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:56:37,748 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:37,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 08:56:37,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:37,820 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:37,821 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-10-22 08:56:37,821 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903753045] [2019-10-22 08:56:37,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-22 08:56:37,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:37,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-22 08:56:37,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:56:37,822 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 11 states. [2019-10-22 08:56:37,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:37,852 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2019-10-22 08:56:37,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 08:56:37,852 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2019-10-22 08:56:37,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:37,853 INFO L225 Difference]: With dead ends: 54 [2019-10-22 08:56:37,853 INFO L226 Difference]: Without dead ends: 53 [2019-10-22 08:56:37,853 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 [2019-10-22 08:56:37,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-10-22 08:56:37,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2019-10-22 08:56:37,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-10-22 08:56:37,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2019-10-22 08:56:37,857 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 45 [2019-10-22 08:56:37,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:37,857 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2019-10-22 08:56:37,857 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-22 08:56:37,857 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2019-10-22 08:56:37,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 08:56:37,859 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:37,859 INFO L380 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1] [2019-10-22 08:56:38,060 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:38,060 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:38,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:38,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1168204975, now seen corresponding path program 9 times [2019-10-22 08:56:38,061 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:38,061 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765898036] [2019-10-22 08:56:38,061 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,061 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:38,155 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765898036] [2019-10-22 08:56:38,155 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792209988] [2019-10-22 08:56:38,155 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:38,188 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-10-22 08:56:38,188 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:38,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 08:56:38,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:38,268 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:38,268 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-10-22 08:56:38,268 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680737088] [2019-10-22 08:56:38,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-22 08:56:38,269 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:38,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-22 08:56:38,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:56:38,269 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 12 states. [2019-10-22 08:56:38,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:38,312 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2019-10-22 08:56:38,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 08:56:38,313 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2019-10-22 08:56:38,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:38,313 INFO L225 Difference]: With dead ends: 57 [2019-10-22 08:56:38,313 INFO L226 Difference]: Without dead ends: 56 [2019-10-22 08:56:38,313 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 [2019-10-22 08:56:38,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-10-22 08:56:38,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2019-10-22 08:56:38,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-10-22 08:56:38,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2019-10-22 08:56:38,317 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2019-10-22 08:56:38,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:38,317 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2019-10-22 08:56:38,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-22 08:56:38,318 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2019-10-22 08:56:38,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 08:56:38,318 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:38,318 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2019-10-22 08:56:38,519 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:38,519 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:38,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:38,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2019-10-22 08:56:38,519 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:38,519 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636361935] [2019-10-22 08:56:38,520 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,520 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:38,598 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636361935] [2019-10-22 08:56:38,598 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848297845] [2019-10-22 08:56:38,598 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:38,627 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-10-22 08:56:38,627 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:38,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 08:56:38,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:38,722 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:38,722 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-10-22 08:56:38,722 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938992314] [2019-10-22 08:56:38,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-22 08:56:38,723 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:38,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-22 08:56:38,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:56:38,723 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 12 states. [2019-10-22 08:56:38,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:38,752 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2019-10-22 08:56:38,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 08:56:38,754 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2019-10-22 08:56:38,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:38,755 INFO L225 Difference]: With dead ends: 59 [2019-10-22 08:56:38,755 INFO L226 Difference]: Without dead ends: 58 [2019-10-22 08:56:38,755 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 [2019-10-22 08:56:38,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-22 08:56:38,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2019-10-22 08:56:38,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-22 08:56:38,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2019-10-22 08:56:38,758 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 50 [2019-10-22 08:56:38,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:38,759 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2019-10-22 08:56:38,759 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-22 08:56:38,759 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2019-10-22 08:56:38,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-22 08:56:38,759 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:38,759 INFO L380 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1] [2019-10-22 08:56:38,960 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:38,960 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:38,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:38,960 INFO L82 PathProgramCache]: Analyzing trace with hash -390144735, now seen corresponding path program 10 times [2019-10-22 08:56:38,960 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:38,960 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086779121] [2019-10-22 08:56:38,960 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,961 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:39,054 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086779121] [2019-10-22 08:56:39,054 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181122012] [2019-10-22 08:56:39,054 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:39,084 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 08:56:39,084 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:39,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-22 08:56:39,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:39,187 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:39,187 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-10-22 08:56:39,188 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816310356] [2019-10-22 08:56:39,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-22 08:56:39,188 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:39,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-22 08:56:39,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-10-22 08:56:39,189 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 13 states. [2019-10-22 08:56:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:39,240 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2019-10-22 08:56:39,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 08:56:39,242 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2019-10-22 08:56:39,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:39,242 INFO L225 Difference]: With dead ends: 62 [2019-10-22 08:56:39,242 INFO L226 Difference]: Without dead ends: 61 [2019-10-22 08:56:39,242 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 [2019-10-22 08:56:39,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-10-22 08:56:39,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2019-10-22 08:56:39,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-10-22 08:56:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2019-10-22 08:56:39,245 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 53 [2019-10-22 08:56:39,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:39,246 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2019-10-22 08:56:39,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-22 08:56:39,246 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2019-10-22 08:56:39,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-22 08:56:39,246 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:39,246 INFO L380 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2019-10-22 08:56:39,446 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:39,447 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:39,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:39,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2019-10-22 08:56:39,447 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:39,447 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856335616] [2019-10-22 08:56:39,448 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:39,448 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:39,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:39,550 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856335616] [2019-10-22 08:56:39,550 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573955058] [2019-10-22 08:56:39,550 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:39,583 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 08:56:39,583 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:39,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-22 08:56:39,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:39,679 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:39,680 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:39,680 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-10-22 08:56:39,680 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473280119] [2019-10-22 08:56:39,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-22 08:56:39,681 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:39,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-22 08:56:39,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-10-22 08:56:39,681 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 13 states. [2019-10-22 08:56:39,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:39,718 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2019-10-22 08:56:39,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 08:56:39,719 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2019-10-22 08:56:39,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:39,719 INFO L225 Difference]: With dead ends: 64 [2019-10-22 08:56:39,720 INFO L226 Difference]: Without dead ends: 63 [2019-10-22 08:56:39,720 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 [2019-10-22 08:56:39,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-22 08:56:39,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2019-10-22 08:56:39,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-10-22 08:56:39,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2019-10-22 08:56:39,723 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2019-10-22 08:56:39,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:39,723 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2019-10-22 08:56:39,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-22 08:56:39,723 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2019-10-22 08:56:39,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-22 08:56:39,733 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:39,733 INFO L380 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1] [2019-10-22 08:56:39,934 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:39,935 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:39,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:39,935 INFO L82 PathProgramCache]: Analyzing trace with hash 936696815, now seen corresponding path program 11 times [2019-10-22 08:56:39,935 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:39,935 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437747971] [2019-10-22 08:56:39,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:39,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:39,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:40,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437747971] [2019-10-22 08:56:40,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752334256] [2019-10-22 08:56:40,045 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:40,083 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-10-22 08:56:40,083 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:40,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-22 08:56:40,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:40,184 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:40,185 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:40,185 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-10-22 08:56:40,185 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28689447] [2019-10-22 08:56:40,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-22 08:56:40,185 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:40,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-22 08:56:40,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-10-22 08:56:40,186 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 14 states. [2019-10-22 08:56:40,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:40,241 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2019-10-22 08:56:40,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 08:56:40,242 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2019-10-22 08:56:40,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:40,243 INFO L225 Difference]: With dead ends: 67 [2019-10-22 08:56:40,243 INFO L226 Difference]: Without dead ends: 66 [2019-10-22 08:56:40,243 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-10-22 08:56:40,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-10-22 08:56:40,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2019-10-22 08:56:40,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-10-22 08:56:40,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2019-10-22 08:56:40,246 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 58 [2019-10-22 08:56:40,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:40,247 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2019-10-22 08:56:40,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-22 08:56:40,247 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2019-10-22 08:56:40,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-22 08:56:40,247 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:40,247 INFO L380 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2019-10-22 08:56:40,452 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:40,452 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:40,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:40,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2019-10-22 08:56:40,453 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:40,453 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095430819] [2019-10-22 08:56:40,453 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:40,453 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:40,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:40,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095430819] [2019-10-22 08:56:40,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065038479] [2019-10-22 08:56:40,583 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:40,622 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-10-22 08:56:40,622 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:40,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-22 08:56:40,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:40,712 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:40,713 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:40,713 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-10-22 08:56:40,713 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800264408] [2019-10-22 08:56:40,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-22 08:56:40,713 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:40,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-22 08:56:40,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-10-22 08:56:40,714 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 14 states. [2019-10-22 08:56:40,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:40,746 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2019-10-22 08:56:40,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 08:56:40,748 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2019-10-22 08:56:40,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:40,748 INFO L225 Difference]: With dead ends: 69 [2019-10-22 08:56:40,749 INFO L226 Difference]: Without dead ends: 68 [2019-10-22 08:56:40,749 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-10-22 08:56:40,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-10-22 08:56:40,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2019-10-22 08:56:40,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-10-22 08:56:40,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2019-10-22 08:56:40,753 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2019-10-22 08:56:40,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:40,753 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2019-10-22 08:56:40,753 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-22 08:56:40,753 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2019-10-22 08:56:40,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-22 08:56:40,754 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:40,754 INFO L380 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1] [2019-10-22 08:56:40,954 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:40,955 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:40,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:40,955 INFO L82 PathProgramCache]: Analyzing trace with hash -598479391, now seen corresponding path program 12 times [2019-10-22 08:56:40,955 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:40,955 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215866019] [2019-10-22 08:56:40,955 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:40,955 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:40,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:41,068 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215866019] [2019-10-22 08:56:41,069 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780264867] [2019-10-22 08:56:41,069 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:41,107 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-10-22 08:56:41,107 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:41,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-22 08:56:41,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:41,223 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:41,224 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:41,224 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2019-10-22 08:56:41,224 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866482275] [2019-10-22 08:56:41,224 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-22 08:56:41,224 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:41,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-22 08:56:41,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-10-22 08:56:41,225 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 15 states. [2019-10-22 08:56:41,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:41,262 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2019-10-22 08:56:41,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-22 08:56:41,263 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2019-10-22 08:56:41,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:41,263 INFO L225 Difference]: With dead ends: 72 [2019-10-22 08:56:41,263 INFO L226 Difference]: Without dead ends: 71 [2019-10-22 08:56:41,263 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-10-22 08:56:41,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-10-22 08:56:41,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2019-10-22 08:56:41,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-10-22 08:56:41,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2019-10-22 08:56:41,266 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 63 [2019-10-22 08:56:41,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:41,266 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2019-10-22 08:56:41,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-22 08:56:41,267 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2019-10-22 08:56:41,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-22 08:56:41,267 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:41,267 INFO L380 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2019-10-22 08:56:41,467 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:41,468 INFO L410 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:41,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:41,468 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2019-10-22 08:56:41,468 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:41,468 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281188978] [2019-10-22 08:56:41,468 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:41,468 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:41,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:41,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281188978] [2019-10-22 08:56:41,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694300530] [2019-10-22 08:56:41,590 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:41,629 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-10-22 08:56:41,629 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:41,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-22 08:56:41,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:41,732 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:41,732 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2019-10-22 08:56:41,732 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542838473] [2019-10-22 08:56:41,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-22 08:56:41,733 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:41,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-22 08:56:41,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-10-22 08:56:41,733 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 15 states. [2019-10-22 08:56:41,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:41,771 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2019-10-22 08:56:41,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-22 08:56:41,771 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2019-10-22 08:56:41,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:41,772 INFO L225 Difference]: With dead ends: 74 [2019-10-22 08:56:41,772 INFO L226 Difference]: Without dead ends: 73 [2019-10-22 08:56:41,772 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-10-22 08:56:41,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-10-22 08:56:41,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2019-10-22 08:56:41,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-10-22 08:56:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2019-10-22 08:56:41,775 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 65 [2019-10-22 08:56:41,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:41,775 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2019-10-22 08:56:41,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-22 08:56:41,775 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2019-10-22 08:56:41,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-22 08:56:41,776 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:41,776 INFO L380 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1] [2019-10-22 08:56:41,976 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:41,977 INFO L410 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:41,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:41,977 INFO L82 PathProgramCache]: Analyzing trace with hash -829668561, now seen corresponding path program 13 times [2019-10-22 08:56:41,977 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:41,977 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975115512] [2019-10-22 08:56:41,977 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:41,977 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:41,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:42,101 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:42,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975115512] [2019-10-22 08:56:42,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167091136] [2019-10-22 08:56:42,101 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:42,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-22 08:56:42,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:42,267 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:42,267 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-10-22 08:56:42,267 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885281453] [2019-10-22 08:56:42,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-22 08:56:42,269 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:42,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-22 08:56:42,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-10-22 08:56:42,270 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 16 states. [2019-10-22 08:56:42,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:42,319 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2019-10-22 08:56:42,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-22 08:56:42,320 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2019-10-22 08:56:42,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:42,320 INFO L225 Difference]: With dead ends: 77 [2019-10-22 08:56:42,320 INFO L226 Difference]: Without dead ends: 76 [2019-10-22 08:56:42,320 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 [2019-10-22 08:56:42,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-10-22 08:56:42,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2019-10-22 08:56:42,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-10-22 08:56:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2019-10-22 08:56:42,323 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 68 [2019-10-22 08:56:42,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:42,323 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2019-10-22 08:56:42,323 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-22 08:56:42,323 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2019-10-22 08:56:42,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-22 08:56:42,325 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:42,325 INFO L380 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2019-10-22 08:56:42,526 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:42,526 INFO L410 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:42,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:42,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2019-10-22 08:56:42,526 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:42,527 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789320306] [2019-10-22 08:56:42,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:42,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:42,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:42,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789320306] [2019-10-22 08:56:42,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892367861] [2019-10-22 08:56:42,631 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:42,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-22 08:56:42,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:42,758 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:42,758 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:42,758 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-10-22 08:56:42,758 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650663897] [2019-10-22 08:56:42,759 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-22 08:56:42,759 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:42,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-22 08:56:42,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-10-22 08:56:42,759 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 16 states. [2019-10-22 08:56:42,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:42,801 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2019-10-22 08:56:42,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-22 08:56:42,801 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2019-10-22 08:56:42,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:42,802 INFO L225 Difference]: With dead ends: 79 [2019-10-22 08:56:42,802 INFO L226 Difference]: Without dead ends: 78 [2019-10-22 08:56:42,802 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-10-22 08:56:42,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-10-22 08:56:42,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2019-10-22 08:56:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-10-22 08:56:42,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2019-10-22 08:56:42,804 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2019-10-22 08:56:42,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:42,805 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2019-10-22 08:56:42,805 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-22 08:56:42,805 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2019-10-22 08:56:42,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-10-22 08:56:42,805 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:42,805 INFO L380 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1] [2019-10-22 08:56:43,006 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:43,006 INFO L410 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:43,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:43,006 INFO L82 PathProgramCache]: Analyzing trace with hash 274402977, now seen corresponding path program 14 times [2019-10-22 08:56:43,006 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:43,006 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305394041] [2019-10-22 08:56:43,007 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:43,007 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:43,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:43,141 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305394041] [2019-10-22 08:56:43,141 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146862561] [2019-10-22 08:56:43,141 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:43,167 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:56:43,167 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:43,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-22 08:56:43,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:43,292 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:43,292 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:43,292 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2019-10-22 08:56:43,292 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725806557] [2019-10-22 08:56:43,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-22 08:56:43,293 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:43,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-22 08:56:43,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-10-22 08:56:43,293 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 17 states. [2019-10-22 08:56:43,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:43,349 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2019-10-22 08:56:43,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-22 08:56:43,350 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2019-10-22 08:56:43,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:43,350 INFO L225 Difference]: With dead ends: 82 [2019-10-22 08:56:43,350 INFO L226 Difference]: Without dead ends: 81 [2019-10-22 08:56:43,351 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 [2019-10-22 08:56:43,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-10-22 08:56:43,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2019-10-22 08:56:43,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-10-22 08:56:43,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2019-10-22 08:56:43,353 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 73 [2019-10-22 08:56:43,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:43,354 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2019-10-22 08:56:43,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-22 08:56:43,354 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2019-10-22 08:56:43,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-22 08:56:43,354 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:43,355 INFO L380 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2019-10-22 08:56:43,555 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:43,555 INFO L410 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:43,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:43,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2019-10-22 08:56:43,556 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:43,556 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040443699] [2019-10-22 08:56:43,556 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:43,556 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:43,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:43,693 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040443699] [2019-10-22 08:56:43,693 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297198265] [2019-10-22 08:56:43,693 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:43,724 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:56:43,724 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:43,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-22 08:56:43,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:43,858 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:43,859 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2019-10-22 08:56:43,859 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56813332] [2019-10-22 08:56:43,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-22 08:56:43,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:43,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-22 08:56:43,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-10-22 08:56:43,859 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 17 states. [2019-10-22 08:56:43,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:43,901 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2019-10-22 08:56:43,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-22 08:56:43,902 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2019-10-22 08:56:43,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:43,902 INFO L225 Difference]: With dead ends: 84 [2019-10-22 08:56:43,902 INFO L226 Difference]: Without dead ends: 83 [2019-10-22 08:56:43,903 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 [2019-10-22 08:56:43,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-10-22 08:56:43,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2019-10-22 08:56:43,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-10-22 08:56:43,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2019-10-22 08:56:43,905 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 75 [2019-10-22 08:56:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:43,905 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2019-10-22 08:56:43,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-22 08:56:43,906 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2019-10-22 08:56:43,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-22 08:56:43,906 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:43,906 INFO L380 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1] [2019-10-22 08:56:44,106 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:44,107 INFO L410 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:44,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:44,107 INFO L82 PathProgramCache]: Analyzing trace with hash -375678353, now seen corresponding path program 15 times [2019-10-22 08:56:44,107 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:44,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811785713] [2019-10-22 08:56:44,107 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:44,107 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:44,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:44,265 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:44,265 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811785713] [2019-10-22 08:56:44,265 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951016854] [2019-10-22 08:56:44,265 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:44,299 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-10-22 08:56:44,299 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:44,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-22 08:56:44,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:44,463 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:44,463 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-10-22 08:56:44,463 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860305830] [2019-10-22 08:56:44,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-22 08:56:44,463 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:44,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-22 08:56:44,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-10-22 08:56:44,464 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 18 states. [2019-10-22 08:56:44,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:44,516 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2019-10-22 08:56:44,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-22 08:56:44,516 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2019-10-22 08:56:44,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:44,517 INFO L225 Difference]: With dead ends: 87 [2019-10-22 08:56:44,517 INFO L226 Difference]: Without dead ends: 86 [2019-10-22 08:56:44,517 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 [2019-10-22 08:56:44,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-10-22 08:56:44,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2019-10-22 08:56:44,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-10-22 08:56:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2019-10-22 08:56:44,519 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 78 [2019-10-22 08:56:44,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:44,524 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2019-10-22 08:56:44,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-22 08:56:44,524 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2019-10-22 08:56:44,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-22 08:56:44,524 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:44,525 INFO L380 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2019-10-22 08:56:44,725 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:44,725 INFO L410 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:44,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:44,726 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2019-10-22 08:56:44,726 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:44,726 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817769995] [2019-10-22 08:56:44,726 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:44,726 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:44,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:44,884 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817769995] [2019-10-22 08:56:44,884 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100537098] [2019-10-22 08:56:44,884 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:44,935 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-10-22 08:56:44,935 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:44,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-22 08:56:44,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:45,076 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:45,077 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:45,077 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-10-22 08:56:45,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276829988] [2019-10-22 08:56:45,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-22 08:56:45,077 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:45,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-22 08:56:45,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-10-22 08:56:45,077 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 18 states. [2019-10-22 08:56:45,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:45,127 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2019-10-22 08:56:45,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-22 08:56:45,127 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2019-10-22 08:56:45,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:45,128 INFO L225 Difference]: With dead ends: 89 [2019-10-22 08:56:45,128 INFO L226 Difference]: Without dead ends: 88 [2019-10-22 08:56:45,128 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-10-22 08:56:45,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-10-22 08:56:45,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2019-10-22 08:56:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-10-22 08:56:45,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2019-10-22 08:56:45,130 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 80 [2019-10-22 08:56:45,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:45,131 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2019-10-22 08:56:45,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-22 08:56:45,131 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2019-10-22 08:56:45,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-22 08:56:45,131 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:45,131 INFO L380 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1] [2019-10-22 08:56:45,332 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:45,333 INFO L410 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:45,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:45,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1770012513, now seen corresponding path program 16 times [2019-10-22 08:56:45,333 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:45,333 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145576447] [2019-10-22 08:56:45,333 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:45,333 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:45,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:45,485 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:45,485 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145576447] [2019-10-22 08:56:45,485 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314692848] [2019-10-22 08:56:45,485 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:45,514 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 08:56:45,514 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:45,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-22 08:56:45,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:45,659 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:45,660 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:45,660 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2019-10-22 08:56:45,660 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623297230] [2019-10-22 08:56:45,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-22 08:56:45,660 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:45,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-22 08:56:45,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-10-22 08:56:45,661 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 19 states. [2019-10-22 08:56:45,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:45,716 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2019-10-22 08:56:45,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-22 08:56:45,720 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2019-10-22 08:56:45,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:45,721 INFO L225 Difference]: With dead ends: 92 [2019-10-22 08:56:45,721 INFO L226 Difference]: Without dead ends: 91 [2019-10-22 08:56:45,721 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-10-22 08:56:45,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-10-22 08:56:45,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2019-10-22 08:56:45,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-10-22 08:56:45,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2019-10-22 08:56:45,723 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 83 [2019-10-22 08:56:45,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:45,724 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2019-10-22 08:56:45,724 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-22 08:56:45,724 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2019-10-22 08:56:45,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-10-22 08:56:45,725 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:45,725 INFO L380 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2019-10-22 08:56:45,925 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:45,925 INFO L410 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:45,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:45,926 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2019-10-22 08:56:45,926 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:45,926 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914581243] [2019-10-22 08:56:45,926 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:45,926 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:45,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:46,055 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:46,055 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914581243] [2019-10-22 08:56:46,055 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084075265] [2019-10-22 08:56:46,055 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:46,087 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 08:56:46,087 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:46,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-22 08:56:46,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:46,246 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:46,246 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:46,246 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2019-10-22 08:56:46,246 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438853792] [2019-10-22 08:56:46,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-22 08:56:46,247 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:46,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-22 08:56:46,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-10-22 08:56:46,247 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 19 states. [2019-10-22 08:56:46,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:46,290 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2019-10-22 08:56:46,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-22 08:56:46,290 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 85 [2019-10-22 08:56:46,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:46,291 INFO L225 Difference]: With dead ends: 94 [2019-10-22 08:56:46,291 INFO L226 Difference]: Without dead ends: 93 [2019-10-22 08:56:46,291 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-10-22 08:56:46,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-10-22 08:56:46,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2019-10-22 08:56:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-10-22 08:56:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2019-10-22 08:56:46,293 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 85 [2019-10-22 08:56:46,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:46,294 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2019-10-22 08:56:46,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-22 08:56:46,294 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2019-10-22 08:56:46,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-22 08:56:46,294 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:46,294 INFO L380 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1] [2019-10-22 08:56:46,495 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:46,495 INFO L410 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:46,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:46,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1344872017, now seen corresponding path program 17 times [2019-10-22 08:56:46,495 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:46,495 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961541556] [2019-10-22 08:56:46,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:46,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:46,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:46,664 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:46,664 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961541556] [2019-10-22 08:56:46,664 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949596697] [2019-10-22 08:56:46,664 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:46,712 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-10-22 08:56:46,712 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:46,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-22 08:56:46,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:46,899 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:46,899 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-10-22 08:56:46,899 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382420197] [2019-10-22 08:56:46,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-22 08:56:46,900 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:46,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-22 08:56:46,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-10-22 08:56:46,901 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 20 states. [2019-10-22 08:56:46,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:46,966 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2019-10-22 08:56:46,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-22 08:56:46,966 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2019-10-22 08:56:46,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:46,967 INFO L225 Difference]: With dead ends: 97 [2019-10-22 08:56:46,967 INFO L226 Difference]: Without dead ends: 96 [2019-10-22 08:56:46,967 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 [2019-10-22 08:56:46,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-10-22 08:56:46,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2019-10-22 08:56:46,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-10-22 08:56:46,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2019-10-22 08:56:46,970 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 88 [2019-10-22 08:56:46,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:46,970 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2019-10-22 08:56:46,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-22 08:56:46,970 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2019-10-22 08:56:46,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-22 08:56:46,971 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:46,971 INFO L380 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2019-10-22 08:56:47,171 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:47,172 INFO L410 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:47,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:47,172 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2019-10-22 08:56:47,172 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:47,172 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243311027] [2019-10-22 08:56:47,172 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,172 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:47,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243311027] [2019-10-22 08:56:47,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221065058] [2019-10-22 08:56:47,365 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:47,420 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-10-22 08:56:47,420 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:47,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-22 08:56:47,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:47,598 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:47,598 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:47,598 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-10-22 08:56:47,598 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479267645] [2019-10-22 08:56:47,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-22 08:56:47,599 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:47,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-22 08:56:47,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-10-22 08:56:47,599 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 20 states. [2019-10-22 08:56:47,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:47,650 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2019-10-22 08:56:47,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-22 08:56:47,650 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 90 [2019-10-22 08:56:47,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:47,651 INFO L225 Difference]: With dead ends: 99 [2019-10-22 08:56:47,651 INFO L226 Difference]: Without dead ends: 98 [2019-10-22 08:56:47,651 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-10-22 08:56:47,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-10-22 08:56:47,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2019-10-22 08:56:47,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-10-22 08:56:47,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2019-10-22 08:56:47,654 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 90 [2019-10-22 08:56:47,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:47,654 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2019-10-22 08:56:47,654 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-22 08:56:47,654 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2019-10-22 08:56:47,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-22 08:56:47,655 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:47,655 INFO L380 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1] [2019-10-22 08:56:47,856 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:47,856 INFO L410 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:47,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:47,856 INFO L82 PathProgramCache]: Analyzing trace with hash -445677535, now seen corresponding path program 18 times [2019-10-22 08:56:47,856 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:47,856 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142098282] [2019-10-22 08:56:47,857 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,857 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:48,059 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:48,060 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142098282] [2019-10-22 08:56:48,060 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515079853] [2019-10-22 08:56:48,060 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:48,113 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-10-22 08:56:48,114 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:48,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-22 08:56:48,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:48,317 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:48,317 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2019-10-22 08:56:48,317 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730707718] [2019-10-22 08:56:48,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-22 08:56:48,318 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:48,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-22 08:56:48,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-10-22 08:56:48,318 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 21 states. [2019-10-22 08:56:48,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:48,381 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2019-10-22 08:56:48,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-22 08:56:48,381 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 93 [2019-10-22 08:56:48,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:48,382 INFO L225 Difference]: With dead ends: 102 [2019-10-22 08:56:48,382 INFO L226 Difference]: Without dead ends: 101 [2019-10-22 08:56:48,382 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 74 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-10-22 08:56:48,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-10-22 08:56:48,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2019-10-22 08:56:48,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-10-22 08:56:48,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2019-10-22 08:56:48,385 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 93 [2019-10-22 08:56:48,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:48,385 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2019-10-22 08:56:48,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-22 08:56:48,385 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2019-10-22 08:56:48,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-22 08:56:48,385 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:48,385 INFO L380 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2019-10-22 08:56:48,586 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:48,586 INFO L410 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:48,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:48,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2019-10-22 08:56:48,587 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:48,587 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026191164] [2019-10-22 08:56:48,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:48,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:48,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:48,767 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:48,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026191164] [2019-10-22 08:56:48,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775700217] [2019-10-22 08:56:48,767 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:48,819 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-10-22 08:56:48,819 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:56:48,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-22 08:56:48,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:49,022 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:49,022 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2019-10-22 08:56:49,022 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668186247] [2019-10-22 08:56:49,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-22 08:56:49,022 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:49,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-22 08:56:49,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-10-22 08:56:49,023 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 21 states. [2019-10-22 08:56:49,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:49,076 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2019-10-22 08:56:49,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-22 08:56:49,076 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 95 [2019-10-22 08:56:49,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:49,077 INFO L225 Difference]: With dead ends: 104 [2019-10-22 08:56:49,077 INFO L226 Difference]: Without dead ends: 103 [2019-10-22 08:56:49,077 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-10-22 08:56:49,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-10-22 08:56:49,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2019-10-22 08:56:49,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-10-22 08:56:49,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2019-10-22 08:56:49,080 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 95 [2019-10-22 08:56:49,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:49,080 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2019-10-22 08:56:49,080 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-22 08:56:49,080 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2019-10-22 08:56:49,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-22 08:56:49,081 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:49,081 INFO L380 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1] [2019-10-22 08:56:49,281 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:49,282 INFO L410 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:49,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:49,282 INFO L82 PathProgramCache]: Analyzing trace with hash -820897553, now seen corresponding path program 19 times [2019-10-22 08:56:49,282 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:49,282 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011647925] [2019-10-22 08:56:49,282 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:49,282 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:49,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:49,494 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:49,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011647925] [2019-10-22 08:56:49,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204553571] [2019-10-22 08:56:49,495 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/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 [2019-10-22 08:56:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:49,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-22 08:56:49,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:49,803 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:49,803 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2019-10-22 08:56:49,803 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778307207] [2019-10-22 08:56:49,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-22 08:56:49,804 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:49,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-22 08:56:49,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-10-22 08:56:49,805 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 22 states. [2019-10-22 08:56:49,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:49,872 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2019-10-22 08:56:49,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-22 08:56:49,872 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2019-10-22 08:56:49,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:49,873 INFO L225 Difference]: With dead ends: 107 [2019-10-22 08:56:49,873 INFO L226 Difference]: Without dead ends: 106 [2019-10-22 08:56:49,873 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 [2019-10-22 08:56:49,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-10-22 08:56:49,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2019-10-22 08:56:49,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-10-22 08:56:49,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2019-10-22 08:56:49,877 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 98 [2019-10-22 08:56:49,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:49,877 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2019-10-22 08:56:49,877 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-22 08:56:49,878 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2019-10-22 08:56:49,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-22 08:56:49,878 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:49,878 INFO L380 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2019-10-22 08:56:50,079 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:50,079 INFO L410 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 08:56:50,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:50,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2019-10-22 08:56:50,079 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:50,079 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413267910] [2019-10-22 08:56:50,079 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,079 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:50,141 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:50,142 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:56:50,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:56:50 BoogieIcfgContainer [2019-10-22 08:56:50,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:56:50,168 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:50,168 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:50,168 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:50,168 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:31" (3/4) ... [2019-10-22 08:56:50,171 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:56:50,229 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_29ac852a-0600-4ee1-bc83-55c3872c1b7c/bin/uautomizer/witness.graphml [2019-10-22 08:56:50,236 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:50,237 INFO L168 Benchmark]: Toolchain (without parser) took 19041.97 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 254.3 MB). Free memory was 942.0 MB in the beginning and 1.2 GB in the end (delta: -307.6 MB). Peak memory consumption was 321.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:50,238 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:50,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -199.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:50,238 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:50,238 INFO L168 Benchmark]: Boogie Preprocessor took 17.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:50,239 INFO L168 Benchmark]: RCFGBuilder took 219.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:50,239 INFO L168 Benchmark]: TraceAbstraction took 18469.93 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 93.3 MB). Free memory was 1.1 GB in the beginning and 854.5 MB in the end (delta: 266.9 MB). Peak memory consumption was 360.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:50,239 INFO L168 Benchmark]: Witness Printer took 68.07 ms. Allocated memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 19.9 MB). Free memory was 854.5 MB in the beginning and 1.2 GB in the end (delta: -395.1 MB). Peak memory consumption was 8.2 kB. Max. memory is 11.5 GB. [2019-10-22 08:56:50,241 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 231.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -199.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 219.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 18469.93 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 93.3 MB). Free memory was 1.1 GB in the beginning and 854.5 MB in the end (delta: 266.9 MB). Peak memory consumption was 360.2 MB. Max. memory is 11.5 GB. * Witness Printer took 68.07 ms. Allocated memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 19.9 MB). Free memory was 854.5 MB in the beginning and 1.2 GB in the end (delta: -395.1 MB). Peak memory consumption was 8.2 kB. 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: 18.4s, OverallIterations: 42, TraceHistogramMax: 20, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 228 SDtfs, 413 SDslu, 1318 SDs, 0 SdLazy, 1445 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2317 GetRequests, 1554 SyntacticMatches, 361 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 6.0s 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, 7.0s 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...