./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/NonTermination4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 0.1.24-6b5699a [2019-11-25 08:45:23,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:45:23,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:45:23,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:45:23,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:45:23,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:45:23,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:45:23,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:45:23,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:45:23,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:45:23,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:45:23,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:45:23,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:45:23,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:45:23,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:45:23,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:45:23,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:45:23,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:45:23,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:45:23,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:45:23,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:45:23,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:45:23,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:45:23,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:45:23,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:45:23,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:45:23,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:45:23,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:45:23,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:45:23,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:45:23,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:45:23,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:45:23,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:45:23,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:45:23,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:45:23,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:45:23,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:45:23,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:45:23,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:45:23,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:45:23,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:45:23,286 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-25 08:45:23,310 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:45:23,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:45:23,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:45:23,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:45:23,321 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:45:23,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:45:23,322 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:45:23,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:45:23,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:45:23,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:45:23,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:45:23,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:45:23,323 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-25 08:45:23,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:45:23,324 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:45:23,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:45:23,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:45:23,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:45:23,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:45:23,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:45:23,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:45:23,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:45:23,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:45:23,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:45:23,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:45:23,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:45:23,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:45:23,327 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_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:23,492 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:45:23,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:45:23,506 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:45:23,507 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:45:23,507 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:45:23,507 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/NonTermination4.c [2019-11-25 08:45:23,577 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/bin/uautomizer/data/7139f9f6b/4eedfe4c42944c9d99ad77bf482480bd/FLAGc302a5f9f [2019-11-25 08:45:23,914 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:45:23,914 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/sv-benchmarks/c/termination-crafted/NonTermination4.c [2019-11-25 08:45:23,918 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/bin/uautomizer/data/7139f9f6b/4eedfe4c42944c9d99ad77bf482480bd/FLAGc302a5f9f [2019-11-25 08:45:24,288 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/bin/uautomizer/data/7139f9f6b/4eedfe4c42944c9d99ad77bf482480bd [2019-11-25 08:45:24,290 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:45:24,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:45:24,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:45:24,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:45:24,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:45:24,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b2deea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24, skipping insertion in model container [2019-11-25 08:45:24,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:45:24,319 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:45:24,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:45:24,446 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:45:24,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:45:24,526 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:45:24,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24 WrapperNode [2019-11-25 08:45:24,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:45:24,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:45:24,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:45:24,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:45:24,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:45:24,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:45:24,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:45:24,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:45:24,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (1/1) ... [2019-11-25 08:45:24,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:45:24,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:45:24,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:45:24,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:45:24,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:45:24,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:45:24,822 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:45:24,823 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:45:24,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:45:24 BoogieIcfgContainer [2019-11-25 08:45:24,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:45:24,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:45:24,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:45:24,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:45:24,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:45:24" (1/3) ... [2019-11-25 08:45:24,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed54cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:45:24, skipping insertion in model container [2019-11-25 08:45:24,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:24" (2/3) ... [2019-11-25 08:45:24,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed54cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:45:24, skipping insertion in model container [2019-11-25 08:45:24,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:45:24" (3/3) ... [2019-11-25 08:45:24,832 INFO L109 eAbstractionObserver]: Analyzing ICFG NonTermination4.c [2019-11-25 08:45:24,842 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:45:24,848 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-25 08:45:24,860 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-25 08:45:24,894 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:45:24,894 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:45:24,895 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:45:24,895 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:45:24,896 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:45:24,896 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:45:24,896 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:45:24,896 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:45:24,917 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-25 08:45:24,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-25 08:45:24,922 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:24,923 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-25 08:45:24,924 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:24,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:24,929 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-25 08:45:24,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:24,939 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825526838] [2019-11-25 08:45:24,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:25,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825526838] [2019-11-25 08:45:25,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:25,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-25 08:45:25,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845054750] [2019-11-25 08:45:25,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:45:25,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:25,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:45:25,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:45:25,098 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-25 08:45:25,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:25,155 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-11-25 08:45:25,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:45:25,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-25 08:45:25,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:25,165 INFO L225 Difference]: With dead ends: 22 [2019-11-25 08:45:25,165 INFO L226 Difference]: Without dead ends: 13 [2019-11-25 08:45:25,168 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 [2019-11-25 08:45:25,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-25 08:45:25,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-25 08:45:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:45:25,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-25 08:45:25,212 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2019-11-25 08:45:25,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:25,212 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-25 08:45:25,212 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:45:25,213 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-25 08:45:25,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-25 08:45:25,213 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:25,213 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-25 08:45:25,214 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:25,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:25,214 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-11-25 08:45:25,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:25,215 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743057307] [2019-11-25 08:45:25,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:25,230 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743057307] [2019-11-25 08:45:25,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:25,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-25 08:45:25,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635140625] [2019-11-25 08:45:25,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:45:25,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:25,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:45:25,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:45:25,233 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2019-11-25 08:45:25,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:25,274 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-25 08:45:25,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:45:25,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-25 08:45:25,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:25,276 INFO L225 Difference]: With dead ends: 12 [2019-11-25 08:45:25,276 INFO L226 Difference]: Without dead ends: 11 [2019-11-25 08:45:25,277 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 [2019-11-25 08:45:25,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-25 08:45:25,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-25 08:45:25,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-25 08:45:25,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-25 08:45:25,280 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2019-11-25 08:45:25,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:25,280 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-25 08:45:25,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:45:25,281 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-25 08:45:25,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-25 08:45:25,281 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:25,281 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-25 08:45:25,282 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:25,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:25,284 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2019-11-25 08:45:25,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:25,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770830839] [2019-11-25 08:45:25,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:25,313 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770830839] [2019-11-25 08:45:25,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:25,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-25 08:45:25,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690169785] [2019-11-25 08:45:25,314 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:45:25,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:25,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:45:25,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:45:25,315 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2019-11-25 08:45:25,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:25,336 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-11-25 08:45:25,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:45:25,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-25 08:45:25,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:25,337 INFO L225 Difference]: With dead ends: 15 [2019-11-25 08:45:25,337 INFO L226 Difference]: Without dead ends: 14 [2019-11-25 08:45:25,338 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 [2019-11-25 08:45:25,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-25 08:45:25,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-25 08:45:25,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-25 08:45:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-25 08:45:25,341 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2019-11-25 08:45:25,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:25,342 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-25 08:45:25,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:45:25,342 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-25 08:45:25,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-25 08:45:25,342 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:25,343 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:45:25,343 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:25,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:25,343 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2019-11-25 08:45:25,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:25,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642122998] [2019-11-25 08:45:25,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:25,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642122998] [2019-11-25 08:45:25,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:25,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-25 08:45:25,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719599296] [2019-11-25 08:45:25,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:45:25,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:25,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:45:25,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:45:25,366 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2019-11-25 08:45:25,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:25,375 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-25 08:45:25,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:45:25,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-25 08:45:25,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:25,377 INFO L225 Difference]: With dead ends: 13 [2019-11-25 08:45:25,377 INFO L226 Difference]: Without dead ends: 12 [2019-11-25 08:45:25,377 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 [2019-11-25 08:45:25,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-25 08:45:25,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-25 08:45:25,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:45:25,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-25 08:45:25,381 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2019-11-25 08:45:25,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:25,381 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-25 08:45:25,381 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:45:25,381 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-25 08:45:25,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-25 08:45:25,382 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:25,382 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:25,382 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:25,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:25,383 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2019-11-25 08:45:25,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:25,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561996513] [2019-11-25 08:45:25,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:25,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:25,432 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561996513] [2019-11-25 08:45:25,432 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841761707] [2019-11-25 08:45:25,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:25,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:45:25,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:25,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:25,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:25,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-11-25 08:45:25,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874533700] [2019-11-25 08:45:25,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:45:25,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:25,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:45:25,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:45:25,507 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2019-11-25 08:45:25,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:25,541 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-11-25 08:45:25,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:45:25,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-25 08:45:25,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:25,542 INFO L225 Difference]: With dead ends: 17 [2019-11-25 08:45:25,543 INFO L226 Difference]: Without dead ends: 16 [2019-11-25 08:45:25,543 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 [2019-11-25 08:45:25,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-25 08:45:25,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-25 08:45:25,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-25 08:45:25,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-11-25 08:45:25,547 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2019-11-25 08:45:25,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:25,547 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-11-25 08:45:25,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:45:25,548 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-11-25 08:45:25,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:45:25,548 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:25,548 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-11-25 08:45:25,749 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:25,749 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:25,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:25,750 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2019-11-25 08:45:25,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:25,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139537943] [2019-11-25 08:45:25,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:25,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:25,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139537943] [2019-11-25 08:45:25,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149657125] [2019-11-25 08:45:25,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-25 08:45:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:25,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:45:25,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:25,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:25,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-11-25 08:45:25,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151458242] [2019-11-25 08:45:25,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:45:25,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:25,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:45:25,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:45:25,835 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2019-11-25 08:45:25,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:25,868 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-25 08:45:25,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:45:25,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-25 08:45:25,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:25,870 INFO L225 Difference]: With dead ends: 19 [2019-11-25 08:45:25,870 INFO L226 Difference]: Without dead ends: 18 [2019-11-25 08:45:25,870 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 [2019-11-25 08:45:25,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-25 08:45:25,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-11-25 08:45:25,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-25 08:45:25,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-11-25 08:45:25,873 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2019-11-25 08:45:25,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:25,873 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-11-25 08:45:25,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:45:25,874 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-11-25 08:45:25,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-25 08:45:25,874 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:25,874 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1] [2019-11-25 08:45:26,078 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:26,079 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:26,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:26,079 INFO L82 PathProgramCache]: Analyzing trace with hash 745486881, now seen corresponding path program 2 times [2019-11-25 08:45:26,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:26,079 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723573489] [2019-11-25 08:45:26,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:26,132 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723573489] [2019-11-25 08:45:26,132 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529941393] [2019-11-25 08:45:26,132 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:26,170 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:45:26,170 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:26,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:45:26,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:26,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:26,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:26,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-25 08:45:26,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261479425] [2019-11-25 08:45:26,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:45:26,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:26,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:45:26,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:45:26,191 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2019-11-25 08:45:26,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:26,217 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-11-25 08:45:26,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:45:26,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-25 08:45:26,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:26,218 INFO L225 Difference]: With dead ends: 22 [2019-11-25 08:45:26,218 INFO L226 Difference]: Without dead ends: 21 [2019-11-25 08:45:26,219 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 [2019-11-25 08:45:26,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-25 08:45:26,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-25 08:45:26,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-25 08:45:26,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-11-25 08:45:26,223 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2019-11-25 08:45:26,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:26,223 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-11-25 08:45:26,224 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:45:26,224 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-11-25 08:45:26,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-25 08:45:26,225 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:26,225 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2019-11-25 08:45:26,425 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:26,425 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:26,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:26,426 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2019-11-25 08:45:26,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:26,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335853191] [2019-11-25 08:45:26,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:26,497 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335853191] [2019-11-25 08:45:26,497 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397176116] [2019-11-25 08:45:26,497 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:26,537 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:45:26,538 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:26,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:45:26,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:26,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:26,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-25 08:45:26,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35807127] [2019-11-25 08:45:26,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:45:26,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:26,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:45:26,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:45:26,564 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2019-11-25 08:45:26,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:26,593 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-25 08:45:26,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:45:26,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-25 08:45:26,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:26,595 INFO L225 Difference]: With dead ends: 24 [2019-11-25 08:45:26,595 INFO L226 Difference]: Without dead ends: 23 [2019-11-25 08:45:26,595 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 [2019-11-25 08:45:26,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-25 08:45:26,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-11-25 08:45:26,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-25 08:45:26,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-11-25 08:45:26,599 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2019-11-25 08:45:26,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:26,600 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-11-25 08:45:26,600 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:45:26,600 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-11-25 08:45:26,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-25 08:45:26,600 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:26,600 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1] [2019-11-25 08:45:26,804 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:26,805 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:26,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:26,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1960222447, now seen corresponding path program 3 times [2019-11-25 08:45:26,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:26,805 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171234117] [2019-11-25 08:45:26,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:26,879 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:26,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171234117] [2019-11-25 08:45:26,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426214546] [2019-11-25 08:45:26,879 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:26,912 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-25 08:45:26,912 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:26,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:45:26,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:26,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:26,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-25 08:45:26,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123033651] [2019-11-25 08:45:26,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:45:26,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:26,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:45:26,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:45:26,946 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2019-11-25 08:45:26,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:26,975 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-11-25 08:45:26,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:45:26,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-11-25 08:45:26,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:26,976 INFO L225 Difference]: With dead ends: 27 [2019-11-25 08:45:26,976 INFO L226 Difference]: Without dead ends: 26 [2019-11-25 08:45:26,977 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 [2019-11-25 08:45:26,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-25 08:45:26,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-11-25 08:45:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-25 08:45:26,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-11-25 08:45:26,981 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 18 [2019-11-25 08:45:26,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:26,982 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-11-25 08:45:26,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:45:26,982 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-11-25 08:45:26,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-25 08:45:26,983 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:26,983 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2019-11-25 08:45:27,190 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:27,191 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:27,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:27,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2019-11-25 08:45:27,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:27,192 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915114352] [2019-11-25 08:45:27,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:27,259 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915114352] [2019-11-25 08:45:27,259 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710873249] [2019-11-25 08:45:27,259 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:27,292 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-25 08:45:27,293 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:27,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:45:27,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:27,321 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:27,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:27,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-25 08:45:27,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295634065] [2019-11-25 08:45:27,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:45:27,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:27,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:45:27,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:45:27,323 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 6 states. [2019-11-25 08:45:27,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:27,351 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-11-25 08:45:27,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:45:27,353 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-11-25 08:45:27,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:27,354 INFO L225 Difference]: With dead ends: 29 [2019-11-25 08:45:27,354 INFO L226 Difference]: Without dead ends: 28 [2019-11-25 08:45:27,354 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 [2019-11-25 08:45:27,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-25 08:45:27,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-11-25 08:45:27,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-25 08:45:27,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-25 08:45:27,358 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2019-11-25 08:45:27,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:27,359 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-25 08:45:27,359 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:45:27,359 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-25 08:45:27,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-25 08:45:27,360 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:27,360 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1] [2019-11-25 08:45:27,560 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:27,561 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:27,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:27,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1492388577, now seen corresponding path program 4 times [2019-11-25 08:45:27,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:27,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326299310] [2019-11-25 08:45:27,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:27,630 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326299310] [2019-11-25 08:45:27,631 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429916976] [2019-11-25 08:45:27,631 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:27,657 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:45:27,658 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:27,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:45:27,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:27,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:27,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-25 08:45:27,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253051736] [2019-11-25 08:45:27,707 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:45:27,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:27,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:45:27,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:45:27,708 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 7 states. [2019-11-25 08:45:27,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:27,746 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2019-11-25 08:45:27,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:45:27,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2019-11-25 08:45:27,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:27,748 INFO L225 Difference]: With dead ends: 32 [2019-11-25 08:45:27,748 INFO L226 Difference]: Without dead ends: 31 [2019-11-25 08:45:27,748 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 [2019-11-25 08:45:27,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-25 08:45:27,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-11-25 08:45:27,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-25 08:45:27,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2019-11-25 08:45:27,752 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2019-11-25 08:45:27,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:27,753 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2019-11-25 08:45:27,753 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:45:27,753 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2019-11-25 08:45:27,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-25 08:45:27,754 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:27,754 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2019-11-25 08:45:27,957 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:27,957 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:27,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:27,958 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2019-11-25 08:45:27,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:27,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957016816] [2019-11-25 08:45:27,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:28,061 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:28,062 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957016816] [2019-11-25 08:45:28,062 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853816265] [2019-11-25 08:45:28,062 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:28,099 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:45:28,099 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:28,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:45:28,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:28,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:28,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-25 08:45:28,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780832355] [2019-11-25 08:45:28,143 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:45:28,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:28,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:45:28,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:45:28,144 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 7 states. [2019-11-25 08:45:28,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:28,177 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2019-11-25 08:45:28,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:45:28,178 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-11-25 08:45:28,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:28,179 INFO L225 Difference]: With dead ends: 34 [2019-11-25 08:45:28,179 INFO L226 Difference]: Without dead ends: 33 [2019-11-25 08:45:28,179 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 [2019-11-25 08:45:28,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-25 08:45:28,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-11-25 08:45:28,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-25 08:45:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2019-11-25 08:45:28,183 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 25 [2019-11-25 08:45:28,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:28,183 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2019-11-25 08:45:28,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:45:28,184 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2019-11-25 08:45:28,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-25 08:45:28,184 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:28,184 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1] [2019-11-25 08:45:28,384 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:28,385 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:28,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:28,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1300871633, now seen corresponding path program 5 times [2019-11-25 08:45:28,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:28,386 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237994507] [2019-11-25 08:45:28,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:28,455 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237994507] [2019-11-25 08:45:28,455 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073504988] [2019-11-25 08:45:28,455 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:28,492 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-25 08:45:28,493 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:28,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:45:28,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:28,546 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:28,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:28,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-25 08:45:28,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483625720] [2019-11-25 08:45:28,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:45:28,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:28,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:45:28,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:45:28,549 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2019-11-25 08:45:28,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:28,601 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2019-11-25 08:45:28,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:45:28,602 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2019-11-25 08:45:28,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:28,602 INFO L225 Difference]: With dead ends: 37 [2019-11-25 08:45:28,602 INFO L226 Difference]: Without dead ends: 36 [2019-11-25 08:45:28,603 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 [2019-11-25 08:45:28,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-25 08:45:28,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2019-11-25 08:45:28,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-25 08:45:28,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2019-11-25 08:45:28,608 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2019-11-25 08:45:28,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:28,608 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2019-11-25 08:45:28,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:45:28,609 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2019-11-25 08:45:28,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-25 08:45:28,609 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:28,609 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2019-11-25 08:45:28,812 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:28,812 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:28,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:28,813 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2019-11-25 08:45:28,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:28,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196432533] [2019-11-25 08:45:28,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:28,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196432533] [2019-11-25 08:45:28,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042013880] [2019-11-25 08:45:28,888 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:28,925 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-25 08:45:28,926 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:28,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:45:28,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:28,962 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:28,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:28,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-25 08:45:28,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003246387] [2019-11-25 08:45:28,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:45:28,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:28,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:45:28,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:45:28,963 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 8 states. [2019-11-25 08:45:28,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:28,994 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2019-11-25 08:45:28,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:45:28,995 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-11-25 08:45:28,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:28,996 INFO L225 Difference]: With dead ends: 39 [2019-11-25 08:45:28,996 INFO L226 Difference]: Without dead ends: 38 [2019-11-25 08:45:28,996 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 [2019-11-25 08:45:28,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-25 08:45:28,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2019-11-25 08:45:28,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-25 08:45:29,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2019-11-25 08:45:29,000 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2019-11-25 08:45:29,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:29,000 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2019-11-25 08:45:29,000 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:45:29,000 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2019-11-25 08:45:29,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-25 08:45:29,001 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:29,001 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1] [2019-11-25 08:45:29,207 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:29,207 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:29,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:29,207 INFO L82 PathProgramCache]: Analyzing trace with hash 758836129, now seen corresponding path program 6 times [2019-11-25 08:45:29,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:29,208 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643585978] [2019-11-25 08:45:29,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:29,287 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:29,287 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643585978] [2019-11-25 08:45:29,287 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146992861] [2019-11-25 08:45:29,287 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:29,314 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-25 08:45:29,315 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:29,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:45:29,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:29,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:29,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-25 08:45:29,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337089095] [2019-11-25 08:45:29,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:45:29,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:29,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:45:29,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:45:29,385 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 9 states. [2019-11-25 08:45:29,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:29,435 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2019-11-25 08:45:29,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:45:29,435 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2019-11-25 08:45:29,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:29,436 INFO L225 Difference]: With dead ends: 42 [2019-11-25 08:45:29,436 INFO L226 Difference]: Without dead ends: 41 [2019-11-25 08:45:29,436 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 [2019-11-25 08:45:29,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-25 08:45:29,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-11-25 08:45:29,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-25 08:45:29,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2019-11-25 08:45:29,441 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 33 [2019-11-25 08:45:29,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:29,441 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2019-11-25 08:45:29,442 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:45:29,442 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2019-11-25 08:45:29,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-25 08:45:29,443 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:29,443 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2019-11-25 08:45:29,653 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:29,653 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:29,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:29,653 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2019-11-25 08:45:29,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:29,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437622386] [2019-11-25 08:45:29,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:29,728 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437622386] [2019-11-25 08:45:29,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399601163] [2019-11-25 08:45:29,729 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:29,758 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-25 08:45:29,758 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:29,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:45:29,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:29,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:29,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-25 08:45:29,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970938022] [2019-11-25 08:45:29,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:45:29,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:29,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:45:29,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:45:29,821 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 9 states. [2019-11-25 08:45:29,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:29,858 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2019-11-25 08:45:29,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:45:29,859 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2019-11-25 08:45:29,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:29,860 INFO L225 Difference]: With dead ends: 44 [2019-11-25 08:45:29,860 INFO L226 Difference]: Without dead ends: 43 [2019-11-25 08:45:29,860 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 [2019-11-25 08:45:29,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-25 08:45:29,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-11-25 08:45:29,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-25 08:45:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2019-11-25 08:45:29,864 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2019-11-25 08:45:29,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:29,864 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2019-11-25 08:45:29,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:45:29,865 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2019-11-25 08:45:29,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-25 08:45:29,865 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:29,865 INFO L410 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1] [2019-11-25 08:45:30,066 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:30,066 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:30,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:30,066 INFO L82 PathProgramCache]: Analyzing trace with hash 522050927, now seen corresponding path program 7 times [2019-11-25 08:45:30,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:30,067 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735036469] [2019-11-25 08:45:30,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:30,161 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735036469] [2019-11-25 08:45:30,162 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504305506] [2019-11-25 08:45:30,162 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:30,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:45:30,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:30,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:30,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-25 08:45:30,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852218776] [2019-11-25 08:45:30,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:45:30,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:30,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:45:30,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:45:30,239 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 10 states. [2019-11-25 08:45:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:30,282 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2019-11-25 08:45:30,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:45:30,282 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-11-25 08:45:30,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:30,283 INFO L225 Difference]: With dead ends: 47 [2019-11-25 08:45:30,283 INFO L226 Difference]: Without dead ends: 46 [2019-11-25 08:45:30,283 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 [2019-11-25 08:45:30,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-25 08:45:30,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2019-11-25 08:45:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-25 08:45:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2019-11-25 08:45:30,287 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 38 [2019-11-25 08:45:30,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:30,287 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2019-11-25 08:45:30,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:45:30,287 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2019-11-25 08:45:30,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-25 08:45:30,288 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:30,288 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2019-11-25 08:45:30,495 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:30,495 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:30,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:30,495 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2019-11-25 08:45:30,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:30,496 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919868844] [2019-11-25 08:45:30,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:30,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919868844] [2019-11-25 08:45:30,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399902575] [2019-11-25 08:45:30,583 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:30,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:45:30,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:30,668 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:30,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:30,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-25 08:45:30,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571368163] [2019-11-25 08:45:30,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:45:30,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:30,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:45:30,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:45:30,670 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 10 states. [2019-11-25 08:45:30,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:30,702 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2019-11-25 08:45:30,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:45:30,702 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2019-11-25 08:45:30,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:30,703 INFO L225 Difference]: With dead ends: 49 [2019-11-25 08:45:30,703 INFO L226 Difference]: Without dead ends: 48 [2019-11-25 08:45:30,703 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 [2019-11-25 08:45:30,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-25 08:45:30,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2019-11-25 08:45:30,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-25 08:45:30,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2019-11-25 08:45:30,707 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2019-11-25 08:45:30,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:30,707 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2019-11-25 08:45:30,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:45:30,708 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2019-11-25 08:45:30,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-25 08:45:30,708 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:30,708 INFO L410 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1] [2019-11-25 08:45:30,911 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:30,911 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:30,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:30,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1443898271, now seen corresponding path program 8 times [2019-11-25 08:45:30,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:30,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825186101] [2019-11-25 08:45:30,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:30,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825186101] [2019-11-25 08:45:30,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930290809] [2019-11-25 08:45:30,997 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:31,034 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:45:31,034 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:31,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:45:31,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:31,121 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:31,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:31,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-11-25 08:45:31,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185596735] [2019-11-25 08:45:31,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-25 08:45:31,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:31,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-25 08:45:31,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:45:31,122 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 11 states. [2019-11-25 08:45:31,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:31,170 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2019-11-25 08:45:31,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-25 08:45:31,170 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2019-11-25 08:45:31,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:31,171 INFO L225 Difference]: With dead ends: 52 [2019-11-25 08:45:31,171 INFO L226 Difference]: Without dead ends: 51 [2019-11-25 08:45:31,172 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 [2019-11-25 08:45:31,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-25 08:45:31,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2019-11-25 08:45:31,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-25 08:45:31,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2019-11-25 08:45:31,176 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 43 [2019-11-25 08:45:31,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:31,176 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2019-11-25 08:45:31,176 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-25 08:45:31,176 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2019-11-25 08:45:31,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-25 08:45:31,177 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:31,177 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2019-11-25 08:45:31,378 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:31,378 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:31,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:31,378 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2019-11-25 08:45:31,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:31,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589941506] [2019-11-25 08:45:31,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:31,480 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:31,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589941506] [2019-11-25 08:45:31,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559852918] [2019-11-25 08:45:31,480 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:31,525 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:45:31,525 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:31,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:45:31,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:31,639 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:31,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:31,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-11-25 08:45:31,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232327188] [2019-11-25 08:45:31,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-25 08:45:31,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:31,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-25 08:45:31,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:45:31,640 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 11 states. [2019-11-25 08:45:31,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:31,669 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2019-11-25 08:45:31,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-25 08:45:31,670 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2019-11-25 08:45:31,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:31,670 INFO L225 Difference]: With dead ends: 54 [2019-11-25 08:45:31,670 INFO L226 Difference]: Without dead ends: 53 [2019-11-25 08:45:31,671 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 [2019-11-25 08:45:31,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-25 08:45:31,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2019-11-25 08:45:31,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-25 08:45:31,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2019-11-25 08:45:31,674 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 45 [2019-11-25 08:45:31,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:31,675 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2019-11-25 08:45:31,675 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-25 08:45:31,675 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2019-11-25 08:45:31,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-25 08:45:31,675 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:31,676 INFO L410 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1] [2019-11-25 08:45:31,878 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:31,878 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:31,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:31,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1168204975, now seen corresponding path program 9 times [2019-11-25 08:45:31,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:31,879 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655048957] [2019-11-25 08:45:31,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:31,975 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655048957] [2019-11-25 08:45:31,975 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819640739] [2019-11-25 08:45:31,975 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:32,009 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-25 08:45:32,009 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:32,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:45:32,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:32,104 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:32,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:32,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-25 08:45:32,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129679125] [2019-11-25 08:45:32,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-25 08:45:32,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:32,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-25 08:45:32,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-25 08:45:32,106 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 12 states. [2019-11-25 08:45:32,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:32,161 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2019-11-25 08:45:32,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-25 08:45:32,162 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2019-11-25 08:45:32,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:32,162 INFO L225 Difference]: With dead ends: 57 [2019-11-25 08:45:32,162 INFO L226 Difference]: Without dead ends: 56 [2019-11-25 08:45:32,163 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 [2019-11-25 08:45:32,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-25 08:45:32,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2019-11-25 08:45:32,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-25 08:45:32,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2019-11-25 08:45:32,166 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2019-11-25 08:45:32,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:32,166 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2019-11-25 08:45:32,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-25 08:45:32,167 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2019-11-25 08:45:32,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-25 08:45:32,167 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:32,167 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2019-11-25 08:45:32,368 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:32,368 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:32,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:32,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2019-11-25 08:45:32,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:32,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341378810] [2019-11-25 08:45:32,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:32,470 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:32,471 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341378810] [2019-11-25 08:45:32,471 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846566889] [2019-11-25 08:45:32,471 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:32,502 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-25 08:45:32,502 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:32,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:45:32,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:32,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:32,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-25 08:45:32,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768778600] [2019-11-25 08:45:32,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-25 08:45:32,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:32,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-25 08:45:32,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-25 08:45:32,581 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 12 states. [2019-11-25 08:45:32,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:32,621 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2019-11-25 08:45:32,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-25 08:45:32,622 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2019-11-25 08:45:32,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:32,623 INFO L225 Difference]: With dead ends: 59 [2019-11-25 08:45:32,623 INFO L226 Difference]: Without dead ends: 58 [2019-11-25 08:45:32,623 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 [2019-11-25 08:45:32,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-25 08:45:32,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2019-11-25 08:45:32,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-25 08:45:32,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2019-11-25 08:45:32,627 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 50 [2019-11-25 08:45:32,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:32,628 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2019-11-25 08:45:32,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-25 08:45:32,628 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2019-11-25 08:45:32,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-25 08:45:32,629 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:32,629 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1] [2019-11-25 08:45:32,829 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:32,829 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:32,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:32,830 INFO L82 PathProgramCache]: Analyzing trace with hash -390144735, now seen corresponding path program 10 times [2019-11-25 08:45:32,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:32,830 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70697913] [2019-11-25 08:45:32,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:32,945 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:32,945 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70697913] [2019-11-25 08:45:32,945 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639921249] [2019-11-25 08:45:32,946 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:32,977 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:45:32,978 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:32,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:45:32,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:33,096 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:33,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:33,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-11-25 08:45:33,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644781293] [2019-11-25 08:45:33,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-25 08:45:33,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:33,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-25 08:45:33,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:45:33,100 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 13 states. [2019-11-25 08:45:33,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:33,157 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2019-11-25 08:45:33,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-25 08:45:33,157 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2019-11-25 08:45:33,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:33,158 INFO L225 Difference]: With dead ends: 62 [2019-11-25 08:45:33,158 INFO L226 Difference]: Without dead ends: 61 [2019-11-25 08:45:33,159 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:45:33,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-25 08:45:33,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2019-11-25 08:45:33,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-25 08:45:33,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2019-11-25 08:45:33,162 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 53 [2019-11-25 08:45:33,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:33,163 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2019-11-25 08:45:33,163 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-25 08:45:33,163 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2019-11-25 08:45:33,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-25 08:45:33,164 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:33,164 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2019-11-25 08:45:33,364 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:33,365 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:33,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:33,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2019-11-25 08:45:33,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:33,366 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070235221] [2019-11-25 08:45:33,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:33,492 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:33,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070235221] [2019-11-25 08:45:33,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930704482] [2019-11-25 08:45:33,493 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:33,526 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:45:33,526 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:33,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:45:33,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:33,638 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:33,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:33,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-11-25 08:45:33,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395763835] [2019-11-25 08:45:33,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-25 08:45:33,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:33,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-25 08:45:33,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:45:33,643 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 13 states. [2019-11-25 08:45:33,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:33,685 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2019-11-25 08:45:33,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-25 08:45:33,685 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2019-11-25 08:45:33,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:33,686 INFO L225 Difference]: With dead ends: 64 [2019-11-25 08:45:33,686 INFO L226 Difference]: Without dead ends: 63 [2019-11-25 08:45:33,687 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 [2019-11-25 08:45:33,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-25 08:45:33,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2019-11-25 08:45:33,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-25 08:45:33,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2019-11-25 08:45:33,690 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2019-11-25 08:45:33,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:33,690 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2019-11-25 08:45:33,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-25 08:45:33,691 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2019-11-25 08:45:33,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-25 08:45:33,691 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:33,709 INFO L410 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1] [2019-11-25 08:45:33,912 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:33,912 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:33,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:33,913 INFO L82 PathProgramCache]: Analyzing trace with hash 936696815, now seen corresponding path program 11 times [2019-11-25 08:45:33,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:33,913 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737545576] [2019-11-25 08:45:33,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:34,024 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:34,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737545576] [2019-11-25 08:45:34,025 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180335337] [2019-11-25 08:45:34,025 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:34,053 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-11-25 08:45:34,053 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:34,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-25 08:45:34,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:34,194 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:34,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:34,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-25 08:45:34,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110179385] [2019-11-25 08:45:34,194 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-25 08:45:34,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:34,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-25 08:45:34,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-25 08:45:34,195 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 14 states. [2019-11-25 08:45:34,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:34,249 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2019-11-25 08:45:34,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-25 08:45:34,250 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2019-11-25 08:45:34,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:34,250 INFO L225 Difference]: With dead ends: 67 [2019-11-25 08:45:34,250 INFO L226 Difference]: Without dead ends: 66 [2019-11-25 08:45:34,251 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 [2019-11-25 08:45:34,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-25 08:45:34,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2019-11-25 08:45:34,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-25 08:45:34,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2019-11-25 08:45:34,253 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 58 [2019-11-25 08:45:34,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:34,253 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2019-11-25 08:45:34,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-25 08:45:34,253 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2019-11-25 08:45:34,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-25 08:45:34,253 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:34,253 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2019-11-25 08:45:34,454 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:34,454 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:34,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:34,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2019-11-25 08:45:34,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:34,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658569956] [2019-11-25 08:45:34,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:34,580 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:34,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658569956] [2019-11-25 08:45:34,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576720532] [2019-11-25 08:45:34,580 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:34,620 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-11-25 08:45:34,620 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:34,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-25 08:45:34,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:34,724 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:34,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:34,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-25 08:45:34,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002218283] [2019-11-25 08:45:34,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-25 08:45:34,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:34,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-25 08:45:34,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-25 08:45:34,725 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 14 states. [2019-11-25 08:45:34,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:34,779 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2019-11-25 08:45:34,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-25 08:45:34,779 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2019-11-25 08:45:34,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:34,780 INFO L225 Difference]: With dead ends: 69 [2019-11-25 08:45:34,780 INFO L226 Difference]: Without dead ends: 68 [2019-11-25 08:45:34,781 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-25 08:45:34,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-25 08:45:34,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2019-11-25 08:45:34,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-25 08:45:34,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2019-11-25 08:45:34,784 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2019-11-25 08:45:34,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:34,784 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2019-11-25 08:45:34,784 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-25 08:45:34,784 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2019-11-25 08:45:34,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-25 08:45:34,784 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:34,785 INFO L410 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1] [2019-11-25 08:45:34,988 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:34,988 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:34,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:34,989 INFO L82 PathProgramCache]: Analyzing trace with hash -598479391, now seen corresponding path program 12 times [2019-11-25 08:45:34,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:34,989 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633611251] [2019-11-25 08:45:34,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:35,125 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:35,127 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633611251] [2019-11-25 08:45:35,127 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149488505] [2019-11-25 08:45:35,127 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:35,166 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-11-25 08:45:35,166 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:35,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-25 08:45:35,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:35,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:35,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2019-11-25 08:45:35,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885633356] [2019-11-25 08:45:35,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-25 08:45:35,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:35,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-25 08:45:35,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-25 08:45:35,302 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 15 states. [2019-11-25 08:45:35,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:35,369 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2019-11-25 08:45:35,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-25 08:45:35,370 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2019-11-25 08:45:35,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:35,371 INFO L225 Difference]: With dead ends: 72 [2019-11-25 08:45:35,371 INFO L226 Difference]: Without dead ends: 71 [2019-11-25 08:45:35,371 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 [2019-11-25 08:45:35,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-25 08:45:35,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2019-11-25 08:45:35,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-25 08:45:35,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2019-11-25 08:45:35,374 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 63 [2019-11-25 08:45:35,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:35,374 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2019-11-25 08:45:35,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-25 08:45:35,374 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2019-11-25 08:45:35,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-25 08:45:35,375 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:35,375 INFO L410 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2019-11-25 08:45:35,580 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:35,581 INFO L410 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:35,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:35,581 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2019-11-25 08:45:35,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:35,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067107864] [2019-11-25 08:45:35,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:35,723 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067107864] [2019-11-25 08:45:35,724 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528151757] [2019-11-25 08:45:35,724 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:35,764 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-11-25 08:45:35,764 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:35,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-25 08:45:35,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:35,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:35,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2019-11-25 08:45:35,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849651526] [2019-11-25 08:45:35,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-25 08:45:35,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:35,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-25 08:45:35,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-25 08:45:35,919 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 15 states. [2019-11-25 08:45:35,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:35,968 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2019-11-25 08:45:35,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-25 08:45:35,968 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2019-11-25 08:45:35,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:35,969 INFO L225 Difference]: With dead ends: 74 [2019-11-25 08:45:35,969 INFO L226 Difference]: Without dead ends: 73 [2019-11-25 08:45:35,969 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 [2019-11-25 08:45:35,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-11-25 08:45:35,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2019-11-25 08:45:35,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-25 08:45:35,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2019-11-25 08:45:35,972 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 65 [2019-11-25 08:45:35,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:35,972 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2019-11-25 08:45:35,972 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-25 08:45:35,972 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2019-11-25 08:45:35,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-25 08:45:35,973 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:35,973 INFO L410 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1] [2019-11-25 08:45:36,176 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:36,177 INFO L410 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:36,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:36,177 INFO L82 PathProgramCache]: Analyzing trace with hash -829668561, now seen corresponding path program 13 times [2019-11-25 08:45:36,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:36,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197575710] [2019-11-25 08:45:36,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:36,339 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:36,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197575710] [2019-11-25 08:45:36,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973658514] [2019-11-25 08:45:36,340 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:36,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-25 08:45:36,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:36,550 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:36,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:36,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-25 08:45:36,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968800757] [2019-11-25 08:45:36,551 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-25 08:45:36,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:36,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-25 08:45:36,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:45:36,552 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 16 states. [2019-11-25 08:45:36,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:36,624 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2019-11-25 08:45:36,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-25 08:45:36,624 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2019-11-25 08:45:36,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:36,625 INFO L225 Difference]: With dead ends: 77 [2019-11-25 08:45:36,625 INFO L226 Difference]: Without dead ends: 76 [2019-11-25 08:45:36,625 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 [2019-11-25 08:45:36,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-11-25 08:45:36,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2019-11-25 08:45:36,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-25 08:45:36,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2019-11-25 08:45:36,628 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 68 [2019-11-25 08:45:36,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:36,628 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2019-11-25 08:45:36,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-25 08:45:36,629 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2019-11-25 08:45:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-25 08:45:36,629 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:36,629 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2019-11-25 08:45:36,832 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:36,832 INFO L410 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:36,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:36,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2019-11-25 08:45:36,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:36,833 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258876644] [2019-11-25 08:45:36,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:37,002 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258876644] [2019-11-25 08:45:37,002 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930173028] [2019-11-25 08:45:37,002 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:37,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-25 08:45:37,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:37,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:37,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-25 08:45:37,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693446505] [2019-11-25 08:45:37,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-25 08:45:37,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:37,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-25 08:45:37,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:45:37,186 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 16 states. [2019-11-25 08:45:37,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:37,246 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2019-11-25 08:45:37,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-25 08:45:37,247 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2019-11-25 08:45:37,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:37,248 INFO L225 Difference]: With dead ends: 79 [2019-11-25 08:45:37,248 INFO L226 Difference]: Without dead ends: 78 [2019-11-25 08:45:37,248 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 [2019-11-25 08:45:37,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-11-25 08:45:37,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2019-11-25 08:45:37,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-25 08:45:37,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2019-11-25 08:45:37,252 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2019-11-25 08:45:37,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:37,252 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2019-11-25 08:45:37,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-25 08:45:37,252 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2019-11-25 08:45:37,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-25 08:45:37,253 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:37,253 INFO L410 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1] [2019-11-25 08:45:37,457 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:37,457 INFO L410 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:37,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:37,457 INFO L82 PathProgramCache]: Analyzing trace with hash 274402977, now seen corresponding path program 14 times [2019-11-25 08:45:37,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:37,458 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384136830] [2019-11-25 08:45:37,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:37,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384136830] [2019-11-25 08:45:37,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997737877] [2019-11-25 08:45:37,633 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:37,662 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:45:37,662 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:37,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-25 08:45:37,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:37,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:37,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2019-11-25 08:45:37,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946631186] [2019-11-25 08:45:37,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-25 08:45:37,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:37,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-25 08:45:37,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-25 08:45:37,821 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 17 states. [2019-11-25 08:45:37,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:37,868 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2019-11-25 08:45:37,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-25 08:45:37,869 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2019-11-25 08:45:37,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:37,869 INFO L225 Difference]: With dead ends: 82 [2019-11-25 08:45:37,869 INFO L226 Difference]: Without dead ends: 81 [2019-11-25 08:45:37,870 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 [2019-11-25 08:45:37,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-11-25 08:45:37,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2019-11-25 08:45:37,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-25 08:45:37,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2019-11-25 08:45:37,873 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 73 [2019-11-25 08:45:37,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:37,873 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2019-11-25 08:45:37,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-25 08:45:37,873 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2019-11-25 08:45:37,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-25 08:45:37,874 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:37,874 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2019-11-25 08:45:38,076 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:38,077 INFO L410 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:38,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:38,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2019-11-25 08:45:38,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:38,077 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225861470] [2019-11-25 08:45:38,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:38,241 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225861470] [2019-11-25 08:45:38,241 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988762563] [2019-11-25 08:45:38,241 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:38,279 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:45:38,279 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:38,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-25 08:45:38,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:38,457 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:38,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:38,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2019-11-25 08:45:38,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184608609] [2019-11-25 08:45:38,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-25 08:45:38,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:38,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-25 08:45:38,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-25 08:45:38,459 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 17 states. [2019-11-25 08:45:38,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:38,506 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2019-11-25 08:45:38,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-25 08:45:38,506 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2019-11-25 08:45:38,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:38,507 INFO L225 Difference]: With dead ends: 84 [2019-11-25 08:45:38,507 INFO L226 Difference]: Without dead ends: 83 [2019-11-25 08:45:38,507 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 [2019-11-25 08:45:38,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-25 08:45:38,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2019-11-25 08:45:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-25 08:45:38,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2019-11-25 08:45:38,509 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 75 [2019-11-25 08:45:38,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:38,510 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2019-11-25 08:45:38,510 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-25 08:45:38,510 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2019-11-25 08:45:38,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-25 08:45:38,510 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:38,510 INFO L410 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1] [2019-11-25 08:45:38,711 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:38,711 INFO L410 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:38,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:38,711 INFO L82 PathProgramCache]: Analyzing trace with hash -375678353, now seen corresponding path program 15 times [2019-11-25 08:45:38,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:38,712 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661464320] [2019-11-25 08:45:38,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:38,875 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661464320] [2019-11-25 08:45:38,875 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35840826] [2019-11-25 08:45:38,875 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:38,906 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-11-25 08:45:38,906 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:38,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-25 08:45:38,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:39,064 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:39,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:39,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-11-25 08:45:39,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50386531] [2019-11-25 08:45:39,065 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-25 08:45:39,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:39,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-25 08:45:39,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-25 08:45:39,066 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 18 states. [2019-11-25 08:45:39,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:39,129 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2019-11-25 08:45:39,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-25 08:45:39,129 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2019-11-25 08:45:39,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:39,130 INFO L225 Difference]: With dead ends: 87 [2019-11-25 08:45:39,130 INFO L226 Difference]: Without dead ends: 86 [2019-11-25 08:45:39,130 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-25 08:45:39,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-11-25 08:45:39,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2019-11-25 08:45:39,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-11-25 08:45:39,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2019-11-25 08:45:39,132 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 78 [2019-11-25 08:45:39,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:39,132 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2019-11-25 08:45:39,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-25 08:45:39,133 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2019-11-25 08:45:39,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-25 08:45:39,133 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:39,133 INFO L410 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2019-11-25 08:45:39,333 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:39,334 INFO L410 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:39,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:39,334 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2019-11-25 08:45:39,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:39,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499714913] [2019-11-25 08:45:39,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:39,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499714913] [2019-11-25 08:45:39,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137431696] [2019-11-25 08:45:39,521 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:39,557 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-11-25 08:45:39,557 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:39,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-25 08:45:39,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:39,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:39,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-11-25 08:45:39,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661372149] [2019-11-25 08:45:39,726 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-25 08:45:39,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:39,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-25 08:45:39,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-25 08:45:39,726 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 18 states. [2019-11-25 08:45:39,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:39,776 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2019-11-25 08:45:39,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-25 08:45:39,776 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2019-11-25 08:45:39,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:39,777 INFO L225 Difference]: With dead ends: 89 [2019-11-25 08:45:39,777 INFO L226 Difference]: Without dead ends: 88 [2019-11-25 08:45:39,777 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 [2019-11-25 08:45:39,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-11-25 08:45:39,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2019-11-25 08:45:39,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-25 08:45:39,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2019-11-25 08:45:39,780 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 80 [2019-11-25 08:45:39,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:39,780 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2019-11-25 08:45:39,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-25 08:45:39,780 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2019-11-25 08:45:39,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-25 08:45:39,781 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:39,781 INFO L410 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1] [2019-11-25 08:45:39,981 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:39,981 INFO L410 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:39,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:39,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1770012513, now seen corresponding path program 16 times [2019-11-25 08:45:39,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:39,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148979998] [2019-11-25 08:45:39,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:40,202 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:40,202 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148979998] [2019-11-25 08:45:40,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304574129] [2019-11-25 08:45:40,203 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:40,238 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:45:40,238 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:40,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-25 08:45:40,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:40,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:40,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2019-11-25 08:45:40,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984264655] [2019-11-25 08:45:40,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-25 08:45:40,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:40,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-25 08:45:40,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-25 08:45:40,487 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 19 states. [2019-11-25 08:45:40,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:40,572 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2019-11-25 08:45:40,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-25 08:45:40,572 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2019-11-25 08:45:40,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:40,573 INFO L225 Difference]: With dead ends: 92 [2019-11-25 08:45:40,573 INFO L226 Difference]: Without dead ends: 91 [2019-11-25 08:45:40,573 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-25 08:45:40,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-11-25 08:45:40,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2019-11-25 08:45:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-11-25 08:45:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2019-11-25 08:45:40,576 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 83 [2019-11-25 08:45:40,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:40,576 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2019-11-25 08:45:40,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-25 08:45:40,576 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2019-11-25 08:45:40,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-25 08:45:40,577 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:40,577 INFO L410 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2019-11-25 08:45:40,780 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:40,781 INFO L410 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:40,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:40,781 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2019-11-25 08:45:40,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:40,782 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277975824] [2019-11-25 08:45:40,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:40,996 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:40,996 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277975824] [2019-11-25 08:45:40,996 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938852201] [2019-11-25 08:45:40,997 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:41,038 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:45:41,039 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:41,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-25 08:45:41,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:41,304 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:41,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:41,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2019-11-25 08:45:41,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915514311] [2019-11-25 08:45:41,305 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-25 08:45:41,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:41,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-25 08:45:41,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-25 08:45:41,306 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 19 states. [2019-11-25 08:45:41,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:41,358 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2019-11-25 08:45:41,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-25 08:45:41,359 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 85 [2019-11-25 08:45:41,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:41,359 INFO L225 Difference]: With dead ends: 94 [2019-11-25 08:45:41,359 INFO L226 Difference]: Without dead ends: 93 [2019-11-25 08:45:41,360 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-25 08:45:41,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-11-25 08:45:41,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2019-11-25 08:45:41,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-25 08:45:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2019-11-25 08:45:41,363 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 85 [2019-11-25 08:45:41,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:41,363 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2019-11-25 08:45:41,363 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-25 08:45:41,363 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2019-11-25 08:45:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-25 08:45:41,363 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:41,364 INFO L410 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1] [2019-11-25 08:45:41,569 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:41,569 INFO L410 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:41,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:41,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1344872017, now seen corresponding path program 17 times [2019-11-25 08:45:41,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:41,570 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186134310] [2019-11-25 08:45:41,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:41,780 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186134310] [2019-11-25 08:45:41,780 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130863801] [2019-11-25 08:45:41,780 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:41,815 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-11-25 08:45:41,816 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:41,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-25 08:45:41,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:41,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:41,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-11-25 08:45:41,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066263077] [2019-11-25 08:45:41,993 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-25 08:45:41,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:41,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-25 08:45:41,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-25 08:45:41,994 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 20 states. [2019-11-25 08:45:42,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:42,062 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2019-11-25 08:45:42,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-25 08:45:42,062 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2019-11-25 08:45:42,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:42,063 INFO L225 Difference]: With dead ends: 97 [2019-11-25 08:45:42,063 INFO L226 Difference]: Without dead ends: 96 [2019-11-25 08:45:42,063 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 [2019-11-25 08:45:42,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-11-25 08:45:42,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2019-11-25 08:45:42,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-11-25 08:45:42,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2019-11-25 08:45:42,066 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 88 [2019-11-25 08:45:42,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:42,066 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2019-11-25 08:45:42,067 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-25 08:45:42,067 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2019-11-25 08:45:42,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-25 08:45:42,067 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:42,067 INFO L410 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2019-11-25 08:45:42,270 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:42,271 INFO L410 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:42,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:42,271 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2019-11-25 08:45:42,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:42,271 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820311400] [2019-11-25 08:45:42,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:42,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820311400] [2019-11-25 08:45:42,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565290866] [2019-11-25 08:45:42,491 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:42,528 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-11-25 08:45:42,528 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:42,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-25 08:45:42,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:42,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:42,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-11-25 08:45:42,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781198091] [2019-11-25 08:45:42,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-25 08:45:42,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:42,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-25 08:45:42,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-25 08:45:42,729 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 20 states. [2019-11-25 08:45:42,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:42,792 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2019-11-25 08:45:42,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-25 08:45:42,792 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 90 [2019-11-25 08:45:42,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:42,793 INFO L225 Difference]: With dead ends: 99 [2019-11-25 08:45:42,793 INFO L226 Difference]: Without dead ends: 98 [2019-11-25 08:45:42,794 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-25 08:45:42,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-25 08:45:42,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2019-11-25 08:45:42,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-11-25 08:45:42,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2019-11-25 08:45:42,797 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 90 [2019-11-25 08:45:42,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:42,797 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2019-11-25 08:45:42,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-25 08:45:42,797 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2019-11-25 08:45:42,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-25 08:45:42,797 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:42,798 INFO L410 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1] [2019-11-25 08:45:42,998 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:42,998 INFO L410 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:42,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:42,998 INFO L82 PathProgramCache]: Analyzing trace with hash -445677535, now seen corresponding path program 18 times [2019-11-25 08:45:42,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:42,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312710805] [2019-11-25 08:45:42,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:43,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312710805] [2019-11-25 08:45:43,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363432396] [2019-11-25 08:45:43,238 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:43,292 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-11-25 08:45:43,292 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:43,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-25 08:45:43,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:43,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:43,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2019-11-25 08:45:43,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951251082] [2019-11-25 08:45:43,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-25 08:45:43,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:43,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-25 08:45:43,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-25 08:45:43,632 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 21 states. [2019-11-25 08:45:43,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:43,720 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2019-11-25 08:45:43,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-25 08:45:43,720 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 93 [2019-11-25 08:45:43,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:43,721 INFO L225 Difference]: With dead ends: 102 [2019-11-25 08:45:43,721 INFO L226 Difference]: Without dead ends: 101 [2019-11-25 08:45:43,722 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 74 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-25 08:45:43,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-25 08:45:43,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2019-11-25 08:45:43,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-25 08:45:43,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2019-11-25 08:45:43,725 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 93 [2019-11-25 08:45:43,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:43,726 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2019-11-25 08:45:43,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-25 08:45:43,726 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2019-11-25 08:45:43,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-25 08:45:43,727 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:43,727 INFO L410 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2019-11-25 08:45:43,927 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:43,927 INFO L410 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:43,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:43,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2019-11-25 08:45:43,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:43,934 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501882651] [2019-11-25 08:45:43,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:44,166 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:44,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501882651] [2019-11-25 08:45:44,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431940923] [2019-11-25 08:45:44,166 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:44,208 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-11-25 08:45:44,209 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:45:44,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-25 08:45:44,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:44,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:44,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2019-11-25 08:45:44,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878724681] [2019-11-25 08:45:44,451 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-25 08:45:44,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:44,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-25 08:45:44,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-25 08:45:44,452 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 21 states. [2019-11-25 08:45:44,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:44,520 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2019-11-25 08:45:44,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-25 08:45:44,520 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 95 [2019-11-25 08:45:44,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:44,521 INFO L225 Difference]: With dead ends: 104 [2019-11-25 08:45:44,521 INFO L226 Difference]: Without dead ends: 103 [2019-11-25 08:45:44,521 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 [2019-11-25 08:45:44,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-25 08:45:44,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2019-11-25 08:45:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-25 08:45:44,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2019-11-25 08:45:44,524 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 95 [2019-11-25 08:45:44,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:44,525 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2019-11-25 08:45:44,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-25 08:45:44,525 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2019-11-25 08:45:44,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-25 08:45:44,525 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:44,526 INFO L410 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1] [2019-11-25 08:45:44,729 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:44,729 INFO L410 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:44,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:44,729 INFO L82 PathProgramCache]: Analyzing trace with hash -820897553, now seen corresponding path program 19 times [2019-11-25 08:45:44,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:44,729 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381628752] [2019-11-25 08:45:44,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:45,025 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:45,025 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381628752] [2019-11-25 08:45:45,025 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354376684] [2019-11-25 08:45:45,026 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/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 [2019-11-25 08:45:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:45,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-25 08:45:45,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:45,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:45:45,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2019-11-25 08:45:45,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164002162] [2019-11-25 08:45:45,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-25 08:45:45,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:45:45,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-25 08:45:45,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-11-25 08:45:45,389 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 22 states. [2019-11-25 08:45:45,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:45,481 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2019-11-25 08:45:45,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-25 08:45:45,481 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2019-11-25 08:45:45,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:45,482 INFO L225 Difference]: With dead ends: 107 [2019-11-25 08:45:45,482 INFO L226 Difference]: Without dead ends: 106 [2019-11-25 08:45:45,483 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 78 SyntacticMatches, 19 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-11-25 08:45:45,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-11-25 08:45:45,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2019-11-25 08:45:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-25 08:45:45,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2019-11-25 08:45:45,486 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 98 [2019-11-25 08:45:45,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:45,486 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2019-11-25 08:45:45,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-25 08:45:45,486 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2019-11-25 08:45:45,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-25 08:45:45,487 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:45,487 INFO L410 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2019-11-25 08:45:45,690 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:45:45,690 INFO L410 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:45:45,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:45,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2019-11-25 08:45:45,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:45:45,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910862606] [2019-11-25 08:45:45,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:45:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:45:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:45:45,744 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:45:45,745 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:45:45,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:45:45 BoogieIcfgContainer [2019-11-25 08:45:45,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:45:45,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:45:45,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:45:45,787 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:45:45,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:45:24" (3/4) ... [2019-11-25 08:45:45,789 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:45:45,835 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_102f66f1-090c-450c-953e-49c878ff5f26/bin/uautomizer/witness.graphml [2019-11-25 08:45:45,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:45:45,837 INFO L168 Benchmark]: Toolchain (without parser) took 21545.12 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 335.5 MB). Free memory was 950.1 MB in the beginning and 1.0 GB in the end (delta: -72.4 MB). Peak memory consumption was 263.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:45,837 INFO L168 Benchmark]: CDTParser took 0.13 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. [2019-11-25 08:45:45,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -157.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:45,838 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.47 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:45:45,839 INFO L168 Benchmark]: Boogie Preprocessor took 23.16 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:45:45,839 INFO L168 Benchmark]: RCFGBuilder took 240.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:45,839 INFO L168 Benchmark]: TraceAbstraction took 20962.16 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 221.2 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 62.7 MB). Peak memory consumption was 284.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:45,840 INFO L168 Benchmark]: Witness Printer took 48.06 ms. Allocated memory is still 1.4 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:45,842 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 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 234.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -157.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.47 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.16 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 240.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 20962.16 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 221.2 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 62.7 MB). Peak memory consumption was 284.0 MB. Max. memory is 11.5 GB. * Witness Printer took 48.06 ms. Allocated memory is still 1.4 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 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: 20.8s, OverallIterations: 42, TraceHistogramMax: 20, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 228 SDtfs, 413 SDslu, 1318 SDs, 0 SdLazy, 1445 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2317 GetRequests, 1554 SyntacticMatches, 361 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 7.6s 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, 0.9s 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...