./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/NonTermination4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/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 0.1.24-678e011 [2019-11-20 06:32:41,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 06:32:41,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 06:32:41,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 06:32:41,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 06:32:41,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 06:32:41,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 06:32:41,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 06:32:41,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 06:32:41,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 06:32:41,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 06:32:41,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 06:32:41,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 06:32:41,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 06:32:41,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 06:32:41,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 06:32:41,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 06:32:41,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 06:32:41,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 06:32:41,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 06:32:41,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 06:32:41,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 06:32:41,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 06:32:41,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 06:32:41,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 06:32:41,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 06:32:41,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 06:32:41,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 06:32:41,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 06:32:41,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 06:32:41,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 06:32:41,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 06:32:41,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 06:32:41,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 06:32:41,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 06:32:41,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 06:32:41,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 06:32:41,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 06:32:41,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 06:32:41,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 06:32:41,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 06:32:41,443 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-20 06:32:41,456 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 06:32:41,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 06:32:41,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 06:32:41,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 06:32:41,459 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 06:32:41,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 06:32:41,459 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 06:32:41,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 06:32:41,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 06:32:41,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 06:32:41,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 06:32:41,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 06:32:41,462 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-20 06:32:41,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 06:32:41,462 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 06:32:41,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 06:32:41,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 06:32:41,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 06:32:41,463 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 06:32:41,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 06:32:41,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 06:32:41,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 06:32:41,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 06:32:41,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 06:32:41,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 06:32:41,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 06:32:41,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 06:32:41,465 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94b61e96441ca10668b436b4ef10dfd9464f0863 [2019-11-20 06:32:41,608 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 06:32:41,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 06:32:41,621 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 06:32:41,622 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 06:32:41,623 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 06:32:41,623 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/NonTermination4.c [2019-11-20 06:32:41,679 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/data/d9490cb96/5355e7adb1f44a0386a520026b47ee7f/FLAG6f7266ddd [2019-11-20 06:32:42,007 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 06:32:42,007 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/sv-benchmarks/c/termination-crafted/NonTermination4.c [2019-11-20 06:32:42,012 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/data/d9490cb96/5355e7adb1f44a0386a520026b47ee7f/FLAG6f7266ddd [2019-11-20 06:32:42,399 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/data/d9490cb96/5355e7adb1f44a0386a520026b47ee7f [2019-11-20 06:32:42,402 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 06:32:42,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 06:32:42,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 06:32:42,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 06:32:42,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 06:32:42,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:32:42" (1/1) ... [2019-11-20 06:32:42,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28435ee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:32:42, skipping insertion in model container [2019-11-20 06:32:42,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:32:42" (1/1) ... [2019-11-20 06:32:42,419 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 06:32:42,435 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 06:32:42,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:32:42,663 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 06:32:42,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:32:42,769 INFO L192 MainTranslator]: Completed translation [2019-11-20 06:32:42,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:32:42 WrapperNode [2019-11-20 06:32:42,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 06:32:42,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 06:32:42,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 06:32:42,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 06:32:42,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:32:42" (1/1) ... [2019-11-20 06:32:42,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:32:42" (1/1) ... [2019-11-20 06:32:42,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 06:32:42,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 06:32:42,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 06:32:42,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 06:32:42,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:32:42" (1/1) ... [2019-11-20 06:32:42,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:32:42" (1/1) ... [2019-11-20 06:32:42,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:32:42" (1/1) ... [2019-11-20 06:32:42,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:32:42" (1/1) ... [2019-11-20 06:32:42,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:32:42" (1/1) ... [2019-11-20 06:32:42,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:32:42" (1/1) ... [2019-11-20 06:32:42,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:32:42" (1/1) ... [2019-11-20 06:32:42,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 06:32:42,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 06:32:42,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 06:32:42,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 06:32:42,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:32:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 06:32:42,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 06:32:42,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 06:32:43,098 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 06:32:43,098 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 06:32:43,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:32:43 BoogieIcfgContainer [2019-11-20 06:32:43,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 06:32:43,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 06:32:43,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 06:32:43,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 06:32:43,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:32:42" (1/3) ... [2019-11-20 06:32:43,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7b2072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:32:43, skipping insertion in model container [2019-11-20 06:32:43,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:32:42" (2/3) ... [2019-11-20 06:32:43,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7b2072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:32:43, skipping insertion in model container [2019-11-20 06:32:43,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:32:43" (3/3) ... [2019-11-20 06:32:43,106 INFO L109 eAbstractionObserver]: Analyzing ICFG NonTermination4.c [2019-11-20 06:32:43,115 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 06:32:43,120 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-20 06:32:43,129 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-20 06:32:43,147 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 06:32:43,147 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 06:32:43,147 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 06:32:43,147 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 06:32:43,147 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 06:32:43,147 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 06:32:43,147 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 06:32:43,147 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 06:32:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-20 06:32:43,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 06:32:43,162 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:43,163 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 06:32:43,164 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:43,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:43,169 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-20 06:32:43,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:43,177 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916000661] [2019-11-20 06:32:43,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:43,294 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916000661] [2019-11-20 06:32:43,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:32:43,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-20 06:32:43,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777885252] [2019-11-20 06:32:43,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 06:32:43,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:43,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 06:32:43,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:32:43,317 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-20 06:32:43,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:43,364 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-11-20 06:32:43,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 06:32:43,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-20 06:32:43,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:43,375 INFO L225 Difference]: With dead ends: 22 [2019-11-20 06:32:43,375 INFO L226 Difference]: Without dead ends: 13 [2019-11-20 06:32:43,378 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:32:43,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-20 06:32:43,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-20 06:32:43,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 06:32:43,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-20 06:32:43,416 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2019-11-20 06:32:43,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:43,417 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-20 06:32:43,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 06:32:43,417 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-20 06:32:43,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 06:32:43,417 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:43,417 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 06:32:43,418 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:43,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:43,418 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-11-20 06:32:43,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:43,419 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526772112] [2019-11-20 06:32:43,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:43,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:43,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526772112] [2019-11-20 06:32:43,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:32:43,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-20 06:32:43,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011963232] [2019-11-20 06:32:43,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 06:32:43,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:43,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 06:32:43,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:32:43,458 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2019-11-20 06:32:43,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:43,474 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-20 06:32:43,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 06:32:43,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-20 06:32:43,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:43,476 INFO L225 Difference]: With dead ends: 12 [2019-11-20 06:32:43,476 INFO L226 Difference]: Without dead ends: 11 [2019-11-20 06:32:43,477 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:32:43,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-20 06:32:43,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-20 06:32:43,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-20 06:32:43,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-20 06:32:43,480 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2019-11-20 06:32:43,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:43,481 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-20 06:32:43,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 06:32:43,481 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-20 06:32:43,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 06:32:43,481 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:43,482 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 06:32:43,482 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:43,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:43,482 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2019-11-20 06:32:43,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:43,483 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547752336] [2019-11-20 06:32:43,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:43,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:43,514 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547752336] [2019-11-20 06:32:43,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:32:43,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-20 06:32:43,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660516249] [2019-11-20 06:32:43,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 06:32:43,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:43,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 06:32:43,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:32:43,516 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2019-11-20 06:32:43,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:43,532 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-11-20 06:32:43,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 06:32:43,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-20 06:32:43,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:43,533 INFO L225 Difference]: With dead ends: 15 [2019-11-20 06:32:43,533 INFO L226 Difference]: Without dead ends: 14 [2019-11-20 06:32:43,534 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:32:43,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-20 06:32:43,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-20 06:32:43,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-20 06:32:43,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-20 06:32:43,537 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2019-11-20 06:32:43,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:43,538 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-20 06:32:43,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 06:32:43,538 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-20 06:32:43,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-20 06:32:43,538 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:43,538 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-20 06:32:43,539 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:43,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:43,539 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2019-11-20 06:32:43,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:43,540 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530573112] [2019-11-20 06:32:43,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:43,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:43,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530573112] [2019-11-20 06:32:43,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:32:43,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-20 06:32:43,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986714177] [2019-11-20 06:32:43,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 06:32:43,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:43,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 06:32:43,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:32:43,591 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2019-11-20 06:32:43,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:43,599 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-20 06:32:43,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 06:32:43,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-20 06:32:43,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:43,600 INFO L225 Difference]: With dead ends: 13 [2019-11-20 06:32:43,601 INFO L226 Difference]: Without dead ends: 12 [2019-11-20 06:32:43,601 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:32:43,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-20 06:32:43,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-20 06:32:43,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 06:32:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-20 06:32:43,604 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2019-11-20 06:32:43,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:43,605 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-20 06:32:43,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 06:32:43,605 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-20 06:32:43,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 06:32:43,605 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:43,606 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-20 06:32:43,606 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:43,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:43,606 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2019-11-20 06:32:43,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:43,607 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991020288] [2019-11-20 06:32:43,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:43,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991020288] [2019-11-20 06:32:43,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042035806] [2019-11-20 06:32:43,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:43,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 06:32:43,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:43,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:43,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:43,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-11-20 06:32:43,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872299847] [2019-11-20 06:32:43,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 06:32:43,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:43,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 06:32:43,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 06:32:43,700 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2019-11-20 06:32:43,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:43,731 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-11-20 06:32:43,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 06:32:43,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-20 06:32:43,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:43,733 INFO L225 Difference]: With dead ends: 17 [2019-11-20 06:32:43,733 INFO L226 Difference]: Without dead ends: 16 [2019-11-20 06:32:43,733 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 06:32:43,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-20 06:32:43,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-20 06:32:43,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-20 06:32:43,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-11-20 06:32:43,737 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2019-11-20 06:32:43,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:43,738 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-11-20 06:32:43,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 06:32:43,738 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-11-20 06:32:43,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 06:32:43,738 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:43,738 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-11-20 06:32:43,939 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:43,939 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:43,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:43,940 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2019-11-20 06:32:43,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:43,940 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426585926] [2019-11-20 06:32:43,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:43,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:43,976 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426585926] [2019-11-20 06:32:43,976 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673925016] [2019-11-20 06:32:43,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:44,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 06:32:44,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:44,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:44,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-11-20 06:32:44,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166321973] [2019-11-20 06:32:44,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 06:32:44,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:44,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 06:32:44,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 06:32:44,039 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2019-11-20 06:32:44,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:44,068 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-20 06:32:44,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 06:32:44,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-20 06:32:44,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:44,070 INFO L225 Difference]: With dead ends: 19 [2019-11-20 06:32:44,070 INFO L226 Difference]: Without dead ends: 18 [2019-11-20 06:32:44,071 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 06:32:44,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-20 06:32:44,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-11-20 06:32:44,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-20 06:32:44,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-11-20 06:32:44,076 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2019-11-20 06:32:44,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:44,076 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-11-20 06:32:44,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 06:32:44,076 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-11-20 06:32:44,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 06:32:44,077 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:44,078 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1] [2019-11-20 06:32:44,287 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:44,287 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:44,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:44,288 INFO L82 PathProgramCache]: Analyzing trace with hash 745486881, now seen corresponding path program 2 times [2019-11-20 06:32:44,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:44,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472197465] [2019-11-20 06:32:44,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:44,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:44,334 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472197465] [2019-11-20 06:32:44,334 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540345053] [2019-11-20 06:32:44,334 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:44,369 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 06:32:44,369 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:44,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 06:32:44,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:44,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:44,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-20 06:32:44,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696119724] [2019-11-20 06:32:44,394 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 06:32:44,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:44,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 06:32:44,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 06:32:44,395 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2019-11-20 06:32:44,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:44,420 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-11-20 06:32:44,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 06:32:44,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-20 06:32:44,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:44,422 INFO L225 Difference]: With dead ends: 22 [2019-11-20 06:32:44,422 INFO L226 Difference]: Without dead ends: 21 [2019-11-20 06:32:44,422 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 06:32:44,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-20 06:32:44,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-20 06:32:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-20 06:32:44,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-11-20 06:32:44,426 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2019-11-20 06:32:44,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:44,427 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-11-20 06:32:44,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 06:32:44,427 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-11-20 06:32:44,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-20 06:32:44,427 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:44,427 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2019-11-20 06:32:44,631 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:44,631 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:44,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:44,631 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2019-11-20 06:32:44,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:44,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684707327] [2019-11-20 06:32:44,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:44,672 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684707327] [2019-11-20 06:32:44,672 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091921075] [2019-11-20 06:32:44,673 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:44,696 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 06:32:44,696 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:44,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 06:32:44,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:44,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:44,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-20 06:32:44,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932354189] [2019-11-20 06:32:44,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 06:32:44,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:44,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 06:32:44,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 06:32:44,720 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2019-11-20 06:32:44,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:44,742 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-20 06:32:44,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 06:32:44,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-20 06:32:44,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:44,744 INFO L225 Difference]: With dead ends: 24 [2019-11-20 06:32:44,744 INFO L226 Difference]: Without dead ends: 23 [2019-11-20 06:32:44,744 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 06:32:44,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-20 06:32:44,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-11-20 06:32:44,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-20 06:32:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-11-20 06:32:44,750 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2019-11-20 06:32:44,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:44,750 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-11-20 06:32:44,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 06:32:44,751 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-11-20 06:32:44,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 06:32:44,751 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:44,751 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1] [2019-11-20 06:32:44,954 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:44,955 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:44,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:44,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1960222447, now seen corresponding path program 3 times [2019-11-20 06:32:44,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:44,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911760715] [2019-11-20 06:32:44,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:45,029 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911760715] [2019-11-20 06:32:45,029 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366633551] [2019-11-20 06:32:45,029 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:45,053 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-20 06:32:45,053 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:45,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 06:32:45,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:45,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:45,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-20 06:32:45,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056697339] [2019-11-20 06:32:45,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 06:32:45,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:45,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 06:32:45,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 06:32:45,091 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2019-11-20 06:32:45,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:45,130 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-11-20 06:32:45,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 06:32:45,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-11-20 06:32:45,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:45,131 INFO L225 Difference]: With dead ends: 27 [2019-11-20 06:32:45,131 INFO L226 Difference]: Without dead ends: 26 [2019-11-20 06:32:45,132 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 06:32:45,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-20 06:32:45,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-11-20 06:32:45,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-20 06:32:45,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-11-20 06:32:45,136 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 18 [2019-11-20 06:32:45,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:45,136 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-11-20 06:32:45,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 06:32:45,136 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-11-20 06:32:45,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 06:32:45,137 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:45,137 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2019-11-20 06:32:45,341 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:45,342 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:45,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:45,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2019-11-20 06:32:45,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:45,343 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16271075] [2019-11-20 06:32:45,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:45,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16271075] [2019-11-20 06:32:45,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132147155] [2019-11-20 06:32:45,399 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:45,422 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-20 06:32:45,422 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:45,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 06:32:45,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:45,444 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:45,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:45,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-20 06:32:45,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932550619] [2019-11-20 06:32:45,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 06:32:45,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:45,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 06:32:45,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 06:32:45,446 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 6 states. [2019-11-20 06:32:45,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:45,485 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-11-20 06:32:45,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 06:32:45,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-11-20 06:32:45,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:45,489 INFO L225 Difference]: With dead ends: 29 [2019-11-20 06:32:45,489 INFO L226 Difference]: Without dead ends: 28 [2019-11-20 06:32:45,489 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 06:32:45,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-20 06:32:45,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-11-20 06:32:45,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-20 06:32:45,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-20 06:32:45,493 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2019-11-20 06:32:45,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:45,494 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-20 06:32:45,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 06:32:45,494 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-20 06:32:45,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-20 06:32:45,494 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:45,494 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1] [2019-11-20 06:32:45,695 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:45,695 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:45,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:45,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1492388577, now seen corresponding path program 4 times [2019-11-20 06:32:45,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:45,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199460255] [2019-11-20 06:32:45,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:45,772 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:45,773 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199460255] [2019-11-20 06:32:45,773 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416657101] [2019-11-20 06:32:45,773 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:45,799 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 06:32:45,799 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:45,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 06:32:45,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:45,827 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:45,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:45,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-20 06:32:45,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402782095] [2019-11-20 06:32:45,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 06:32:45,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:45,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 06:32:45,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-20 06:32:45,829 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 7 states. [2019-11-20 06:32:45,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:45,865 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2019-11-20 06:32:45,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 06:32:45,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2019-11-20 06:32:45,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:45,866 INFO L225 Difference]: With dead ends: 32 [2019-11-20 06:32:45,866 INFO L226 Difference]: Without dead ends: 31 [2019-11-20 06:32:45,867 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-20 06:32:45,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-20 06:32:45,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-11-20 06:32:45,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-20 06:32:45,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2019-11-20 06:32:45,870 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2019-11-20 06:32:45,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:45,871 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2019-11-20 06:32:45,871 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 06:32:45,871 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2019-11-20 06:32:45,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-20 06:32:45,871 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:45,872 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2019-11-20 06:32:46,074 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:46,078 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:46,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:46,079 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2019-11-20 06:32:46,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:46,079 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619406393] [2019-11-20 06:32:46,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:46,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619406393] [2019-11-20 06:32:46,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738849070] [2019-11-20 06:32:46,151 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:46,183 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 06:32:46,183 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:46,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 06:32:46,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:46,229 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:46,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:46,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-20 06:32:46,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320012375] [2019-11-20 06:32:46,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 06:32:46,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:46,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 06:32:46,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-20 06:32:46,231 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 7 states. [2019-11-20 06:32:46,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:46,266 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2019-11-20 06:32:46,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 06:32:46,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-11-20 06:32:46,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:46,267 INFO L225 Difference]: With dead ends: 34 [2019-11-20 06:32:46,267 INFO L226 Difference]: Without dead ends: 33 [2019-11-20 06:32:46,268 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-20 06:32:46,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-20 06:32:46,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-11-20 06:32:46,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-20 06:32:46,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2019-11-20 06:32:46,272 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 25 [2019-11-20 06:32:46,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:46,272 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2019-11-20 06:32:46,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 06:32:46,272 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2019-11-20 06:32:46,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 06:32:46,273 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:46,273 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1] [2019-11-20 06:32:46,483 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:46,483 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:46,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:46,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1300871633, now seen corresponding path program 5 times [2019-11-20 06:32:46,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:46,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855489481] [2019-11-20 06:32:46,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:46,582 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:46,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855489481] [2019-11-20 06:32:46,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319606639] [2019-11-20 06:32:46,582 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:46,616 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-20 06:32:46,616 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:46,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 06:32:46,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:46,660 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:46,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:46,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-20 06:32:46,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189472382] [2019-11-20 06:32:46,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 06:32:46,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:46,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 06:32:46,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-20 06:32:46,662 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2019-11-20 06:32:46,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:46,704 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2019-11-20 06:32:46,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 06:32:46,705 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2019-11-20 06:32:46,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:46,705 INFO L225 Difference]: With dead ends: 37 [2019-11-20 06:32:46,705 INFO L226 Difference]: Without dead ends: 36 [2019-11-20 06:32:46,706 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-20 06:32:46,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-20 06:32:46,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2019-11-20 06:32:46,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-20 06:32:46,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2019-11-20 06:32:46,711 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2019-11-20 06:32:46,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:46,711 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2019-11-20 06:32:46,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 06:32:46,712 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2019-11-20 06:32:46,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-20 06:32:46,712 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:46,712 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2019-11-20 06:32:46,915 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:46,915 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:46,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:46,915 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2019-11-20 06:32:46,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:46,916 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860345099] [2019-11-20 06:32:46,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:46,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860345099] [2019-11-20 06:32:46,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83168226] [2019-11-20 06:32:46,997 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:47,040 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-20 06:32:47,040 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:47,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 06:32:47,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:47,088 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:47,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:47,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-20 06:32:47,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523720359] [2019-11-20 06:32:47,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 06:32:47,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:47,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 06:32:47,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-20 06:32:47,090 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 8 states. [2019-11-20 06:32:47,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:47,122 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2019-11-20 06:32:47,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 06:32:47,122 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-11-20 06:32:47,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:47,123 INFO L225 Difference]: With dead ends: 39 [2019-11-20 06:32:47,123 INFO L226 Difference]: Without dead ends: 38 [2019-11-20 06:32:47,124 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-20 06:32:47,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-20 06:32:47,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2019-11-20 06:32:47,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-20 06:32:47,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2019-11-20 06:32:47,128 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2019-11-20 06:32:47,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:47,128 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2019-11-20 06:32:47,128 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 06:32:47,128 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2019-11-20 06:32:47,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 06:32:47,129 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:47,129 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1] [2019-11-20 06:32:47,333 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:47,333 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:47,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:47,334 INFO L82 PathProgramCache]: Analyzing trace with hash 758836129, now seen corresponding path program 6 times [2019-11-20 06:32:47,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:47,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921507778] [2019-11-20 06:32:47,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:47,439 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921507778] [2019-11-20 06:32:47,439 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768324987] [2019-11-20 06:32:47,439 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:47,484 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-20 06:32:47,485 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:47,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 06:32:47,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:47,556 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:47,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:47,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-20 06:32:47,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905459046] [2019-11-20 06:32:47,557 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 06:32:47,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:47,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 06:32:47,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-20 06:32:47,557 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 9 states. [2019-11-20 06:32:47,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:47,615 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2019-11-20 06:32:47,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 06:32:47,620 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2019-11-20 06:32:47,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:47,621 INFO L225 Difference]: With dead ends: 42 [2019-11-20 06:32:47,621 INFO L226 Difference]: Without dead ends: 41 [2019-11-20 06:32:47,621 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-20 06:32:47,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-20 06:32:47,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-11-20 06:32:47,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-20 06:32:47,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2019-11-20 06:32:47,625 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 33 [2019-11-20 06:32:47,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:47,625 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2019-11-20 06:32:47,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 06:32:47,626 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2019-11-20 06:32:47,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 06:32:47,626 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:47,627 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2019-11-20 06:32:47,827 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:47,827 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:47,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:47,828 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2019-11-20 06:32:47,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:47,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83052547] [2019-11-20 06:32:47,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:47,913 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83052547] [2019-11-20 06:32:47,913 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31162406] [2019-11-20 06:32:47,913 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:47,938 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-20 06:32:47,938 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:47,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 06:32:47,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:47,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:47,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-20 06:32:47,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940648154] [2019-11-20 06:32:47,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 06:32:47,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:47,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 06:32:47,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-20 06:32:47,982 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 9 states. [2019-11-20 06:32:48,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:48,019 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2019-11-20 06:32:48,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 06:32:48,021 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2019-11-20 06:32:48,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:48,021 INFO L225 Difference]: With dead ends: 44 [2019-11-20 06:32:48,021 INFO L226 Difference]: Without dead ends: 43 [2019-11-20 06:32:48,022 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-20 06:32:48,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-20 06:32:48,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-11-20 06:32:48,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-20 06:32:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2019-11-20 06:32:48,026 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2019-11-20 06:32:48,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:48,026 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2019-11-20 06:32:48,026 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 06:32:48,026 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2019-11-20 06:32:48,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-20 06:32:48,027 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:48,027 INFO L410 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1] [2019-11-20 06:32:48,227 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:48,228 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:48,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:48,228 INFO L82 PathProgramCache]: Analyzing trace with hash 522050927, now seen corresponding path program 7 times [2019-11-20 06:32:48,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:48,228 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093757881] [2019-11-20 06:32:48,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:48,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093757881] [2019-11-20 06:32:48,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472475138] [2019-11-20 06:32:48,315 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:48,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 06:32:48,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:48,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:48,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-20 06:32:48,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967633822] [2019-11-20 06:32:48,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 06:32:48,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:48,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 06:32:48,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-20 06:32:48,403 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 10 states. [2019-11-20 06:32:48,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:48,445 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2019-11-20 06:32:48,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 06:32:48,445 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-11-20 06:32:48,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:48,446 INFO L225 Difference]: With dead ends: 47 [2019-11-20 06:32:48,446 INFO L226 Difference]: Without dead ends: 46 [2019-11-20 06:32:48,446 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-20 06:32:48,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-20 06:32:48,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2019-11-20 06:32:48,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-20 06:32:48,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2019-11-20 06:32:48,450 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 38 [2019-11-20 06:32:48,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:48,451 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2019-11-20 06:32:48,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 06:32:48,451 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2019-11-20 06:32:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-20 06:32:48,452 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:48,452 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2019-11-20 06:32:48,654 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:48,654 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:48,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:48,655 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2019-11-20 06:32:48,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:48,655 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227047585] [2019-11-20 06:32:48,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:48,743 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:48,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227047585] [2019-11-20 06:32:48,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442916356] [2019-11-20 06:32:48,743 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:48,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 06:32:48,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:48,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:48,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-20 06:32:48,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986667203] [2019-11-20 06:32:48,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 06:32:48,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:48,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 06:32:48,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-20 06:32:48,920 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 10 states. [2019-11-20 06:32:48,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:48,959 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2019-11-20 06:32:48,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 06:32:48,960 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2019-11-20 06:32:48,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:48,960 INFO L225 Difference]: With dead ends: 49 [2019-11-20 06:32:48,960 INFO L226 Difference]: Without dead ends: 48 [2019-11-20 06:32:48,961 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-20 06:32:48,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-20 06:32:48,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2019-11-20 06:32:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-20 06:32:48,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2019-11-20 06:32:48,966 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2019-11-20 06:32:48,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:48,966 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2019-11-20 06:32:48,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 06:32:48,966 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2019-11-20 06:32:48,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-20 06:32:48,968 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:48,969 INFO L410 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1] [2019-11-20 06:32:49,171 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:49,171 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:49,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:49,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1443898271, now seen corresponding path program 8 times [2019-11-20 06:32:49,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:49,172 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766222254] [2019-11-20 06:32:49,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:49,252 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:49,253 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766222254] [2019-11-20 06:32:49,253 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063308521] [2019-11-20 06:32:49,253 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:49,286 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 06:32:49,286 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:49,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 06:32:49,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:49,351 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:49,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:49,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-11-20 06:32:49,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648622838] [2019-11-20 06:32:49,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 06:32:49,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:49,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 06:32:49,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-20 06:32:49,352 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 11 states. [2019-11-20 06:32:49,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:49,407 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2019-11-20 06:32:49,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 06:32:49,408 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2019-11-20 06:32:49,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:49,409 INFO L225 Difference]: With dead ends: 52 [2019-11-20 06:32:49,409 INFO L226 Difference]: Without dead ends: 51 [2019-11-20 06:32:49,409 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-20 06:32:49,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-20 06:32:49,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2019-11-20 06:32:49,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-20 06:32:49,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2019-11-20 06:32:49,414 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 43 [2019-11-20 06:32:49,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:49,414 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2019-11-20 06:32:49,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 06:32:49,414 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2019-11-20 06:32:49,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-20 06:32:49,415 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:49,415 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2019-11-20 06:32:49,615 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:49,616 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:49,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:49,616 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2019-11-20 06:32:49,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:49,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569439721] [2019-11-20 06:32:49,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:49,719 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569439721] [2019-11-20 06:32:49,719 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868663596] [2019-11-20 06:32:49,719 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:49,750 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 06:32:49,750 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:49,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 06:32:49,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:49,838 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:49,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:49,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-11-20 06:32:49,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859681279] [2019-11-20 06:32:49,839 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 06:32:49,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:49,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 06:32:49,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-20 06:32:49,840 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 11 states. [2019-11-20 06:32:49,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:49,874 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2019-11-20 06:32:49,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 06:32:49,874 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2019-11-20 06:32:49,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:49,875 INFO L225 Difference]: With dead ends: 54 [2019-11-20 06:32:49,875 INFO L226 Difference]: Without dead ends: 53 [2019-11-20 06:32:49,876 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-20 06:32:49,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-20 06:32:49,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2019-11-20 06:32:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-20 06:32:49,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2019-11-20 06:32:49,880 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 45 [2019-11-20 06:32:49,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:49,880 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2019-11-20 06:32:49,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 06:32:49,880 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2019-11-20 06:32:49,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-20 06:32:49,881 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:49,881 INFO L410 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1] [2019-11-20 06:32:50,087 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:50,088 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:50,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:50,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1168204975, now seen corresponding path program 9 times [2019-11-20 06:32:50,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:50,088 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817667225] [2019-11-20 06:32:50,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:50,197 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:50,197 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817667225] [2019-11-20 06:32:50,197 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214310112] [2019-11-20 06:32:50,198 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:50,238 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-20 06:32:50,238 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:50,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 06:32:50,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:50,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:50,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-20 06:32:50,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951149963] [2019-11-20 06:32:50,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 06:32:50,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:50,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 06:32:50,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-20 06:32:50,343 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 12 states. [2019-11-20 06:32:50,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:50,391 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2019-11-20 06:32:50,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 06:32:50,392 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2019-11-20 06:32:50,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:50,392 INFO L225 Difference]: With dead ends: 57 [2019-11-20 06:32:50,393 INFO L226 Difference]: Without dead ends: 56 [2019-11-20 06:32:50,393 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-20 06:32:50,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-20 06:32:50,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2019-11-20 06:32:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-20 06:32:50,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2019-11-20 06:32:50,398 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2019-11-20 06:32:50,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:50,398 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2019-11-20 06:32:50,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 06:32:50,398 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2019-11-20 06:32:50,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-20 06:32:50,399 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:50,399 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2019-11-20 06:32:50,600 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:50,600 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:50,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:50,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2019-11-20 06:32:50,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:50,600 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012677399] [2019-11-20 06:32:50,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:50,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012677399] [2019-11-20 06:32:50,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368674071] [2019-11-20 06:32:50,706 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:50,749 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-20 06:32:50,750 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:50,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 06:32:50,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:50,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:50,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-20 06:32:50,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821110188] [2019-11-20 06:32:50,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 06:32:50,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:50,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 06:32:50,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-20 06:32:50,851 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 12 states. [2019-11-20 06:32:50,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:50,887 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2019-11-20 06:32:50,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 06:32:50,889 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2019-11-20 06:32:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:50,889 INFO L225 Difference]: With dead ends: 59 [2019-11-20 06:32:50,890 INFO L226 Difference]: Without dead ends: 58 [2019-11-20 06:32:50,890 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-20 06:32:50,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-20 06:32:50,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2019-11-20 06:32:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-20 06:32:50,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2019-11-20 06:32:50,894 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 50 [2019-11-20 06:32:50,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:50,894 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2019-11-20 06:32:50,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 06:32:50,894 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2019-11-20 06:32:50,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-20 06:32:50,895 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:50,895 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1] [2019-11-20 06:32:51,098 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:51,099 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:51,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:51,099 INFO L82 PathProgramCache]: Analyzing trace with hash -390144735, now seen corresponding path program 10 times [2019-11-20 06:32:51,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:51,099 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865010838] [2019-11-20 06:32:51,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:51,231 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:51,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865010838] [2019-11-20 06:32:51,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654160758] [2019-11-20 06:32:51,232 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:51,282 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 06:32:51,282 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:51,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 06:32:51,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:51,407 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:51,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:51,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-11-20 06:32:51,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469128789] [2019-11-20 06:32:51,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 06:32:51,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:51,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 06:32:51,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-20 06:32:51,411 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 13 states. [2019-11-20 06:32:51,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:51,469 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2019-11-20 06:32:51,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 06:32:51,469 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2019-11-20 06:32:51,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:51,470 INFO L225 Difference]: With dead ends: 62 [2019-11-20 06:32:51,470 INFO L226 Difference]: Without dead ends: 61 [2019-11-20 06:32:51,471 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-20 06:32:51,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-20 06:32:51,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2019-11-20 06:32:51,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-20 06:32:51,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2019-11-20 06:32:51,475 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 53 [2019-11-20 06:32:51,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:51,475 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2019-11-20 06:32:51,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 06:32:51,476 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2019-11-20 06:32:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-20 06:32:51,476 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:51,477 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2019-11-20 06:32:51,677 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:51,677 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:51,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:51,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2019-11-20 06:32:51,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:51,678 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605935168] [2019-11-20 06:32:51,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:51,783 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:51,783 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605935168] [2019-11-20 06:32:51,783 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095622753] [2019-11-20 06:32:51,783 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:51,816 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 06:32:51,816 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:51,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 06:32:51,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:51,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:51,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-11-20 06:32:51,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261353699] [2019-11-20 06:32:51,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 06:32:51,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:51,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 06:32:51,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-20 06:32:51,926 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 13 states. [2019-11-20 06:32:51,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:51,965 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2019-11-20 06:32:51,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 06:32:51,965 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2019-11-20 06:32:51,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:51,966 INFO L225 Difference]: With dead ends: 64 [2019-11-20 06:32:51,966 INFO L226 Difference]: Without dead ends: 63 [2019-11-20 06:32:51,966 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-20 06:32:51,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-20 06:32:51,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2019-11-20 06:32:51,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-20 06:32:51,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2019-11-20 06:32:51,976 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2019-11-20 06:32:51,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:51,977 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2019-11-20 06:32:51,977 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 06:32:51,977 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2019-11-20 06:32:51,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-20 06:32:51,978 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:51,978 INFO L410 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1] [2019-11-20 06:32:52,186 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:52,186 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:52,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:52,187 INFO L82 PathProgramCache]: Analyzing trace with hash 936696815, now seen corresponding path program 11 times [2019-11-20 06:32:52,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:52,187 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688145865] [2019-11-20 06:32:52,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:52,304 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688145865] [2019-11-20 06:32:52,305 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812741531] [2019-11-20 06:32:52,305 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:52,344 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-11-20 06:32:52,344 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:52,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 06:32:52,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:52,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:52,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-20 06:32:52,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410067933] [2019-11-20 06:32:52,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-20 06:32:52,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:52,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 06:32:52,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-20 06:32:52,479 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 14 states. [2019-11-20 06:32:52,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:52,530 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2019-11-20 06:32:52,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-20 06:32:52,531 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2019-11-20 06:32:52,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:52,531 INFO L225 Difference]: With dead ends: 67 [2019-11-20 06:32:52,532 INFO L226 Difference]: Without dead ends: 66 [2019-11-20 06:32:52,532 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-20 06:32:52,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-20 06:32:52,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2019-11-20 06:32:52,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-20 06:32:52,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2019-11-20 06:32:52,535 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 58 [2019-11-20 06:32:52,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:52,535 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2019-11-20 06:32:52,535 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-20 06:32:52,536 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2019-11-20 06:32:52,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-20 06:32:52,536 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:52,536 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2019-11-20 06:32:52,737 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:52,737 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:52,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:52,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2019-11-20 06:32:52,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:52,737 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229058657] [2019-11-20 06:32:52,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:52,855 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:52,855 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229058657] [2019-11-20 06:32:52,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667813006] [2019-11-20 06:32:52,856 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:52,894 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-11-20 06:32:52,894 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:52,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 06:32:52,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:53,018 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:53,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:53,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-20 06:32:53,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031988642] [2019-11-20 06:32:53,018 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-20 06:32:53,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:53,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 06:32:53,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-20 06:32:53,019 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 14 states. [2019-11-20 06:32:53,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:53,063 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2019-11-20 06:32:53,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-20 06:32:53,064 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2019-11-20 06:32:53,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:53,064 INFO L225 Difference]: With dead ends: 69 [2019-11-20 06:32:53,064 INFO L226 Difference]: Without dead ends: 68 [2019-11-20 06:32:53,065 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-20 06:32:53,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-20 06:32:53,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2019-11-20 06:32:53,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-20 06:32:53,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2019-11-20 06:32:53,068 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2019-11-20 06:32:53,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:53,068 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2019-11-20 06:32:53,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-20 06:32:53,068 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2019-11-20 06:32:53,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-20 06:32:53,069 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:53,069 INFO L410 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1] [2019-11-20 06:32:53,269 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:53,270 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:53,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:53,270 INFO L82 PathProgramCache]: Analyzing trace with hash -598479391, now seen corresponding path program 12 times [2019-11-20 06:32:53,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:53,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373093415] [2019-11-20 06:32:53,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:53,405 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373093415] [2019-11-20 06:32:53,405 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515998219] [2019-11-20 06:32:53,405 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:53,446 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-11-20 06:32:53,446 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:53,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 06:32:53,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:53,589 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:53,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:53,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2019-11-20 06:32:53,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853485007] [2019-11-20 06:32:53,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-20 06:32:53,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:53,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-20 06:32:53,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-20 06:32:53,590 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 15 states. [2019-11-20 06:32:53,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:53,649 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2019-11-20 06:32:53,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-20 06:32:53,650 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2019-11-20 06:32:53,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:53,650 INFO L225 Difference]: With dead ends: 72 [2019-11-20 06:32:53,651 INFO L226 Difference]: Without dead ends: 71 [2019-11-20 06:32:53,651 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-20 06:32:53,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-20 06:32:53,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2019-11-20 06:32:53,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-20 06:32:53,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2019-11-20 06:32:53,654 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 63 [2019-11-20 06:32:53,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:53,654 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2019-11-20 06:32:53,654 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-20 06:32:53,654 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2019-11-20 06:32:53,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-20 06:32:53,655 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:53,655 INFO L410 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2019-11-20 06:32:53,861 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:53,861 INFO L410 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:53,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:53,862 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2019-11-20 06:32:53,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:53,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421444996] [2019-11-20 06:32:53,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:54,020 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421444996] [2019-11-20 06:32:54,020 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663843810] [2019-11-20 06:32:54,020 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:54,060 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-11-20 06:32:54,060 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:54,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 06:32:54,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:54,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:54,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2019-11-20 06:32:54,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655519951] [2019-11-20 06:32:54,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-20 06:32:54,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:54,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-20 06:32:54,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-20 06:32:54,192 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 15 states. [2019-11-20 06:32:54,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:54,241 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2019-11-20 06:32:54,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-20 06:32:54,242 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2019-11-20 06:32:54,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:54,243 INFO L225 Difference]: With dead ends: 74 [2019-11-20 06:32:54,243 INFO L226 Difference]: Without dead ends: 73 [2019-11-20 06:32:54,243 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-20 06:32:54,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-11-20 06:32:54,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2019-11-20 06:32:54,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-20 06:32:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2019-11-20 06:32:54,246 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 65 [2019-11-20 06:32:54,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:54,247 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2019-11-20 06:32:54,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-20 06:32:54,247 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2019-11-20 06:32:54,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-20 06:32:54,248 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:54,248 INFO L410 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1] [2019-11-20 06:32:54,450 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:54,451 INFO L410 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:54,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:54,451 INFO L82 PathProgramCache]: Analyzing trace with hash -829668561, now seen corresponding path program 13 times [2019-11-20 06:32:54,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:54,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627526074] [2019-11-20 06:32:54,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:54,600 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:54,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627526074] [2019-11-20 06:32:54,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133639673] [2019-11-20 06:32:54,600 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:54,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-20 06:32:54,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:54,793 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:54,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:54,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-20 06:32:54,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043603739] [2019-11-20 06:32:54,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 06:32:54,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:54,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 06:32:54,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-20 06:32:54,796 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 16 states. [2019-11-20 06:32:54,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:54,861 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2019-11-20 06:32:54,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-20 06:32:54,861 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2019-11-20 06:32:54,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:54,862 INFO L225 Difference]: With dead ends: 77 [2019-11-20 06:32:54,862 INFO L226 Difference]: Without dead ends: 76 [2019-11-20 06:32:54,863 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-20 06:32:54,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-11-20 06:32:54,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2019-11-20 06:32:54,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-20 06:32:54,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2019-11-20 06:32:54,865 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 68 [2019-11-20 06:32:54,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:54,866 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2019-11-20 06:32:54,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 06:32:54,866 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2019-11-20 06:32:54,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-20 06:32:54,867 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:54,867 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2019-11-20 06:32:55,070 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:55,071 INFO L410 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:55,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:55,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2019-11-20 06:32:55,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:55,072 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353273802] [2019-11-20 06:32:55,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:55,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353273802] [2019-11-20 06:32:55,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718703609] [2019-11-20 06:32:55,232 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:55,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-20 06:32:55,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:55,425 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:55,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:55,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-20 06:32:55,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934666369] [2019-11-20 06:32:55,426 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 06:32:55,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:55,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 06:32:55,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-20 06:32:55,426 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 16 states. [2019-11-20 06:32:55,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:55,472 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2019-11-20 06:32:55,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-20 06:32:55,472 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2019-11-20 06:32:55,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:55,473 INFO L225 Difference]: With dead ends: 79 [2019-11-20 06:32:55,473 INFO L226 Difference]: Without dead ends: 78 [2019-11-20 06:32:55,473 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-20 06:32:55,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-11-20 06:32:55,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2019-11-20 06:32:55,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-20 06:32:55,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2019-11-20 06:32:55,476 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2019-11-20 06:32:55,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:55,476 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2019-11-20 06:32:55,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 06:32:55,477 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2019-11-20 06:32:55,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-20 06:32:55,477 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:55,477 INFO L410 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1] [2019-11-20 06:32:55,680 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:55,680 INFO L410 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:55,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:55,681 INFO L82 PathProgramCache]: Analyzing trace with hash 274402977, now seen corresponding path program 14 times [2019-11-20 06:32:55,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:55,681 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861270664] [2019-11-20 06:32:55,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:55,857 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:55,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861270664] [2019-11-20 06:32:55,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005668495] [2019-11-20 06:32:55,857 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:55,892 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 06:32:55,892 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:55,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-20 06:32:55,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:56,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:56,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2019-11-20 06:32:56,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374704624] [2019-11-20 06:32:56,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-20 06:32:56,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:56,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-20 06:32:56,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-20 06:32:56,067 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 17 states. [2019-11-20 06:32:56,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:56,132 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2019-11-20 06:32:56,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-20 06:32:56,133 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2019-11-20 06:32:56,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:56,133 INFO L225 Difference]: With dead ends: 82 [2019-11-20 06:32:56,133 INFO L226 Difference]: Without dead ends: 81 [2019-11-20 06:32:56,134 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-20 06:32:56,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-11-20 06:32:56,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2019-11-20 06:32:56,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-20 06:32:56,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2019-11-20 06:32:56,136 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 73 [2019-11-20 06:32:56,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:56,137 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2019-11-20 06:32:56,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-20 06:32:56,137 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2019-11-20 06:32:56,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-20 06:32:56,137 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:56,137 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2019-11-20 06:32:56,340 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:56,341 INFO L410 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:56,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:56,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2019-11-20 06:32:56,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:56,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365050163] [2019-11-20 06:32:56,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:56,489 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:56,489 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365050163] [2019-11-20 06:32:56,489 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580891240] [2019-11-20 06:32:56,490 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:56,526 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 06:32:56,526 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:56,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-20 06:32:56,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:56,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:56,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2019-11-20 06:32:56,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115912978] [2019-11-20 06:32:56,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-20 06:32:56,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:56,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-20 06:32:56,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-20 06:32:56,698 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 17 states. [2019-11-20 06:32:56,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:56,759 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2019-11-20 06:32:56,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-20 06:32:56,759 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2019-11-20 06:32:56,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:56,760 INFO L225 Difference]: With dead ends: 84 [2019-11-20 06:32:56,760 INFO L226 Difference]: Without dead ends: 83 [2019-11-20 06:32:56,761 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-20 06:32:56,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-20 06:32:56,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2019-11-20 06:32:56,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-20 06:32:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2019-11-20 06:32:56,764 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 75 [2019-11-20 06:32:56,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:56,764 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2019-11-20 06:32:56,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-20 06:32:56,764 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2019-11-20 06:32:56,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-20 06:32:56,765 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:56,765 INFO L410 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1] [2019-11-20 06:32:56,965 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:56,965 INFO L410 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:56,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:56,966 INFO L82 PathProgramCache]: Analyzing trace with hash -375678353, now seen corresponding path program 15 times [2019-11-20 06:32:56,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:56,966 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155596067] [2019-11-20 06:32:56,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:57,142 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155596067] [2019-11-20 06:32:57,142 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713795215] [2019-11-20 06:32:57,142 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:57,174 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-11-20 06:32:57,175 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:57,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-20 06:32:57,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:57,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:57,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-11-20 06:32:57,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091638317] [2019-11-20 06:32:57,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 06:32:57,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:57,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 06:32:57,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-20 06:32:57,364 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 18 states. [2019-11-20 06:32:57,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:57,428 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2019-11-20 06:32:57,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 06:32:57,429 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2019-11-20 06:32:57,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:57,429 INFO L225 Difference]: With dead ends: 87 [2019-11-20 06:32:57,429 INFO L226 Difference]: Without dead ends: 86 [2019-11-20 06:32:57,430 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-20 06:32:57,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-11-20 06:32:57,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2019-11-20 06:32:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-11-20 06:32:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2019-11-20 06:32:57,434 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 78 [2019-11-20 06:32:57,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:57,434 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2019-11-20 06:32:57,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 06:32:57,434 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2019-11-20 06:32:57,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-20 06:32:57,434 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:57,434 INFO L410 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2019-11-20 06:32:57,635 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:57,635 INFO L410 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:57,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:57,635 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2019-11-20 06:32:57,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:57,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835722257] [2019-11-20 06:32:57,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:57,863 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835722257] [2019-11-20 06:32:57,863 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549264101] [2019-11-20 06:32:57,863 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:57,897 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-11-20 06:32:57,897 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:57,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-20 06:32:57,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:58,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:58,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-11-20 06:32:58,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379623921] [2019-11-20 06:32:58,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 06:32:58,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:58,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 06:32:58,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-20 06:32:58,074 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 18 states. [2019-11-20 06:32:58,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:58,136 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2019-11-20 06:32:58,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 06:32:58,139 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2019-11-20 06:32:58,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:58,140 INFO L225 Difference]: With dead ends: 89 [2019-11-20 06:32:58,140 INFO L226 Difference]: Without dead ends: 88 [2019-11-20 06:32:58,141 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-20 06:32:58,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-11-20 06:32:58,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2019-11-20 06:32:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-20 06:32:58,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2019-11-20 06:32:58,144 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 80 [2019-11-20 06:32:58,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:58,144 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2019-11-20 06:32:58,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 06:32:58,144 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2019-11-20 06:32:58,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-20 06:32:58,145 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:58,145 INFO L410 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1] [2019-11-20 06:32:58,345 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:58,345 INFO L410 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:58,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:58,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1770012513, now seen corresponding path program 16 times [2019-11-20 06:32:58,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:58,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785785974] [2019-11-20 06:32:58,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:58,558 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785785974] [2019-11-20 06:32:58,558 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768048991] [2019-11-20 06:32:58,558 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:58,593 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 06:32:58,593 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:58,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-20 06:32:58,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:58,812 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:58,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:58,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2019-11-20 06:32:58,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479824748] [2019-11-20 06:32:58,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-20 06:32:58,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:58,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-20 06:32:58,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-20 06:32:58,814 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 19 states. [2019-11-20 06:32:58,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:58,884 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2019-11-20 06:32:58,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-20 06:32:58,884 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2019-11-20 06:32:58,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:58,885 INFO L225 Difference]: With dead ends: 92 [2019-11-20 06:32:58,885 INFO L226 Difference]: Without dead ends: 91 [2019-11-20 06:32:58,885 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-20 06:32:58,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-11-20 06:32:58,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2019-11-20 06:32:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-11-20 06:32:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2019-11-20 06:32:58,888 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 83 [2019-11-20 06:32:58,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:58,888 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2019-11-20 06:32:58,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-20 06:32:58,889 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2019-11-20 06:32:58,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-20 06:32:58,889 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:58,889 INFO L410 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2019-11-20 06:32:59,093 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:59,094 INFO L410 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:59,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:59,094 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2019-11-20 06:32:59,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:59,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922985978] [2019-11-20 06:32:59,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:59,274 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922985978] [2019-11-20 06:32:59,274 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402784059] [2019-11-20 06:32:59,274 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:59,302 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 06:32:59,302 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:32:59,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-20 06:32:59,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:32:59,495 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:59,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:32:59,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2019-11-20 06:32:59,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695047635] [2019-11-20 06:32:59,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-20 06:32:59,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:32:59,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-20 06:32:59,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-20 06:32:59,497 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 19 states. [2019-11-20 06:32:59,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:32:59,537 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2019-11-20 06:32:59,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-20 06:32:59,537 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 85 [2019-11-20 06:32:59,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:32:59,538 INFO L225 Difference]: With dead ends: 94 [2019-11-20 06:32:59,538 INFO L226 Difference]: Without dead ends: 93 [2019-11-20 06:32:59,538 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-20 06:32:59,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-11-20 06:32:59,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2019-11-20 06:32:59,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-20 06:32:59,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2019-11-20 06:32:59,541 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 85 [2019-11-20 06:32:59,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:32:59,541 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2019-11-20 06:32:59,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-20 06:32:59,541 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2019-11-20 06:32:59,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-20 06:32:59,542 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:32:59,542 INFO L410 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1] [2019-11-20 06:32:59,745 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:32:59,745 INFO L410 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:32:59,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:32:59,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1344872017, now seen corresponding path program 17 times [2019-11-20 06:32:59,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:32:59,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235018710] [2019-11-20 06:32:59,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:32:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:32:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:32:59,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235018710] [2019-11-20 06:32:59,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628673089] [2019-11-20 06:32:59,970 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:33:00,005 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-11-20 06:33:00,005 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:33:00,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-20 06:33:00,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:33:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:33:00,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:33:00,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-11-20 06:33:00,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891137529] [2019-11-20 06:33:00,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-20 06:33:00,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:33:00,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-20 06:33:00,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-20 06:33:00,219 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 20 states. [2019-11-20 06:33:00,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:33:00,282 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2019-11-20 06:33:00,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-20 06:33:00,283 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2019-11-20 06:33:00,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:33:00,283 INFO L225 Difference]: With dead ends: 97 [2019-11-20 06:33:00,283 INFO L226 Difference]: Without dead ends: 96 [2019-11-20 06:33:00,284 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-20 06:33:00,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-11-20 06:33:00,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2019-11-20 06:33:00,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-11-20 06:33:00,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2019-11-20 06:33:00,287 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 88 [2019-11-20 06:33:00,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:33:00,287 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2019-11-20 06:33:00,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-20 06:33:00,287 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2019-11-20 06:33:00,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-20 06:33:00,288 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:33:00,288 INFO L410 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2019-11-20 06:33:00,488 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:33:00,488 INFO L410 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:33:00,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:33:00,489 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2019-11-20 06:33:00,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:33:00,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469410724] [2019-11-20 06:33:00,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:33:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:33:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:33:00,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469410724] [2019-11-20 06:33:00,727 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488688831] [2019-11-20 06:33:00,727 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:33:00,777 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-11-20 06:33:00,777 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:33:00,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-20 06:33:00,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:33:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:33:01,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:33:01,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-11-20 06:33:01,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551223352] [2019-11-20 06:33:01,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-20 06:33:01,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:33:01,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-20 06:33:01,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-20 06:33:01,016 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 20 states. [2019-11-20 06:33:01,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:33:01,073 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2019-11-20 06:33:01,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-20 06:33:01,073 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 90 [2019-11-20 06:33:01,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:33:01,074 INFO L225 Difference]: With dead ends: 99 [2019-11-20 06:33:01,074 INFO L226 Difference]: Without dead ends: 98 [2019-11-20 06:33:01,074 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-20 06:33:01,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-20 06:33:01,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2019-11-20 06:33:01,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-11-20 06:33:01,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2019-11-20 06:33:01,077 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 90 [2019-11-20 06:33:01,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:33:01,078 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2019-11-20 06:33:01,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-20 06:33:01,078 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2019-11-20 06:33:01,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-20 06:33:01,078 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:33:01,079 INFO L410 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1] [2019-11-20 06:33:01,282 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:33:01,282 INFO L410 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:33:01,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:33:01,282 INFO L82 PathProgramCache]: Analyzing trace with hash -445677535, now seen corresponding path program 18 times [2019-11-20 06:33:01,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:33:01,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108537079] [2019-11-20 06:33:01,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:33:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:33:01,529 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:33:01,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108537079] [2019-11-20 06:33:01,530 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127144878] [2019-11-20 06:33:01,530 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:33:01,580 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-11-20 06:33:01,580 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:33:01,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-20 06:33:01,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:33:01,832 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:33:01,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:33:01,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2019-11-20 06:33:01,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851435560] [2019-11-20 06:33:01,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-20 06:33:01,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:33:01,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-20 06:33:01,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-20 06:33:01,834 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 21 states. [2019-11-20 06:33:01,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:33:01,913 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2019-11-20 06:33:01,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-20 06:33:01,913 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 93 [2019-11-20 06:33:01,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:33:01,914 INFO L225 Difference]: With dead ends: 102 [2019-11-20 06:33:01,914 INFO L226 Difference]: Without dead ends: 101 [2019-11-20 06:33:01,915 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 74 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-20 06:33:01,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-20 06:33:01,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2019-11-20 06:33:01,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-20 06:33:01,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2019-11-20 06:33:01,918 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 93 [2019-11-20 06:33:01,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:33:01,919 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2019-11-20 06:33:01,919 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-20 06:33:01,919 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2019-11-20 06:33:01,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-20 06:33:01,919 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:33:01,919 INFO L410 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2019-11-20 06:33:02,123 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:33:02,123 INFO L410 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:33:02,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:33:02,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2019-11-20 06:33:02,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:33:02,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048576520] [2019-11-20 06:33:02,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:33:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:33:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:33:02,390 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048576520] [2019-11-20 06:33:02,390 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493826727] [2019-11-20 06:33:02,391 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:33:02,438 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-11-20 06:33:02,438 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 06:33:02,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-20 06:33:02,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:33:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:33:02,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:33:02,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2019-11-20 06:33:02,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867280647] [2019-11-20 06:33:02,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-20 06:33:02,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:33:02,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-20 06:33:02,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-20 06:33:02,693 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 21 states. [2019-11-20 06:33:02,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:33:02,753 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2019-11-20 06:33:02,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-20 06:33:02,754 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 95 [2019-11-20 06:33:02,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:33:02,755 INFO L225 Difference]: With dead ends: 104 [2019-11-20 06:33:02,755 INFO L226 Difference]: Without dead ends: 103 [2019-11-20 06:33:02,755 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-20 06:33:02,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-20 06:33:02,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2019-11-20 06:33:02,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-20 06:33:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2019-11-20 06:33:02,758 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 95 [2019-11-20 06:33:02,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:33:02,758 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2019-11-20 06:33:02,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-20 06:33:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2019-11-20 06:33:02,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-20 06:33:02,759 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:33:02,759 INFO L410 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1] [2019-11-20 06:33:02,962 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:33:02,963 INFO L410 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:33:02,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:33:02,963 INFO L82 PathProgramCache]: Analyzing trace with hash -820897553, now seen corresponding path program 19 times [2019-11-20 06:33:02,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:33:02,964 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336940165] [2019-11-20 06:33:02,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:33:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:33:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:33:03,217 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336940165] [2019-11-20 06:33:03,217 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288242133] [2019-11-20 06:33:03,217 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:33:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:33:03,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-20 06:33:03,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:33:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:33:03,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 06:33:03,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2019-11-20 06:33:03,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912887803] [2019-11-20 06:33:03,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-20 06:33:03,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:33:03,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-20 06:33:03,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-11-20 06:33:03,496 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 22 states. [2019-11-20 06:33:03,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:33:03,588 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2019-11-20 06:33:03,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-20 06:33:03,588 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2019-11-20 06:33:03,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:33:03,589 INFO L225 Difference]: With dead ends: 107 [2019-11-20 06:33:03,589 INFO L226 Difference]: Without dead ends: 106 [2019-11-20 06:33:03,590 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 78 SyntacticMatches, 19 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-11-20 06:33:03,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-11-20 06:33:03,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2019-11-20 06:33:03,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-20 06:33:03,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2019-11-20 06:33:03,593 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 98 [2019-11-20 06:33:03,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:33:03,593 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2019-11-20 06:33:03,593 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-20 06:33:03,593 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2019-11-20 06:33:03,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-20 06:33:03,594 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:33:03,594 INFO L410 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2019-11-20 06:33:03,804 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 06:33:03,805 INFO L410 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 06:33:03,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:33:03,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2019-11-20 06:33:03,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:33:03,805 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486060732] [2019-11-20 06:33:03,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:33:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 06:33:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 06:33:03,850 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 06:33:03,850 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 06:33:03,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:33:03 BoogieIcfgContainer [2019-11-20 06:33:03,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 06:33:03,899 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 06:33:03,899 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 06:33:03,899 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 06:33:03,900 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:32:43" (3/4) ... [2019-11-20 06:33:03,902 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 06:33:03,956 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_df9e3e68-7bc9-4bbc-87fe-7ed01306d044/bin/uautomizer/witness.graphml [2019-11-20 06:33:03,957 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 06:33:03,959 INFO L168 Benchmark]: Toolchain (without parser) took 21554.56 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 228.1 MB). Free memory was 944.7 MB in the beginning and 948.3 MB in the end (delta: -3.6 MB). Peak memory consumption was 224.5 MB. Max. memory is 11.5 GB. [2019-11-20 06:33:03,959 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:33:03,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -182.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-20 06:33:03,960 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.96 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 06:33:03,960 INFO L168 Benchmark]: Boogie Preprocessor took 22.20 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. [2019-11-20 06:33:03,961 INFO L168 Benchmark]: RCFGBuilder took 268.74 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: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-11-20 06:33:03,961 INFO L168 Benchmark]: TraceAbstraction took 20797.98 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 103.3 MB). Free memory was 1.1 GB in the beginning and 950.8 MB in the end (delta: 150.4 MB). Peak memory consumption was 253.7 MB. Max. memory is 11.5 GB. [2019-11-20 06:33:03,962 INFO L168 Benchmark]: Witness Printer took 58.09 ms. Allocated memory is still 1.3 GB. Free memory was 950.8 MB in the beginning and 948.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 11.5 GB. [2019-11-20 06:33:03,963 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 364.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -182.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.96 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.20 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 268.74 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: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 20797.98 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 103.3 MB). Free memory was 1.1 GB in the beginning and 950.8 MB in the end (delta: 150.4 MB). Peak memory consumption was 253.7 MB. Max. memory is 11.5 GB. * Witness Printer took 58.09 ms. Allocated memory is still 1.3 GB. Free memory was 950.8 MB in the beginning and 948.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, y; [L16] x = 1 [L17] y = 1 [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] 3*y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Result: UNSAFE, OverallTime: 20.7s, OverallIterations: 42, TraceHistogramMax: 20, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 228 SDtfs, 413 SDslu, 1318 SDs, 0 SdLazy, 1445 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2317 GetRequests, 1554 SyntacticMatches, 361 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 7.5s 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, 0.8s SatisfiabilityAnalysisTime, 8.8s 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...