./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/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 0455ba49274114922cfe1b7739d9cb0a89e6c868 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Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:30:06,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:30:06,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:30:06,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:30:06,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:30:06,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:30:06,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:30:06,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:30:06,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:30:06,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:30:06,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:30:06,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:30:06,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:30:06,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:30:06,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:30:06,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:30:06,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:30:06,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:30:06,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:30:06,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:30:06,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:30:06,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:30:06,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:30:06,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:30:06,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:30:06,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:30:06,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:30:06,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:30:06,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:30:06,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:30:06,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:30:06,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:30:06,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:30:06,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:30:06,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:30:06,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:30:06,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:30:06,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:30:06,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:30:06,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:30:06,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:30:06,332 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-29 18:30:06,359 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:30:06,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:30:06,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:30:06,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:30:06,362 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:30:06,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:30:06,362 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:30:06,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:30:06,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:30:06,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:30:06,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:30:06,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:30:06,364 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 18:30:06,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:30:06,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:30:06,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:30:06,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:30:06,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:30:06,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:30:06,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:30:06,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:30:06,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:30:06,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:30:06,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:30:06,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:30:06,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:30:06,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:30:06,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:30:06,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0455ba49274114922cfe1b7739d9cb0a89e6c868 [2020-11-29 18:30:06,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:30:06,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:30:06,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:30:06,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:30:06,680 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:30:06,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2020-11-29 18:30:06,775 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/data/da46e7bc2/6146c2965ead4de291b7cc9d7ad94d45/FLAG0013412fa [2020-11-29 18:30:07,308 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:30:07,309 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2020-11-29 18:30:07,316 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/data/da46e7bc2/6146c2965ead4de291b7cc9d7ad94d45/FLAG0013412fa [2020-11-29 18:30:07,662 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/data/da46e7bc2/6146c2965ead4de291b7cc9d7ad94d45 [2020-11-29 18:30:07,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:30:07,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:30:07,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:30:07,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:30:07,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:30:07,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:30:07" (1/1) ... [2020-11-29 18:30:07,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f857f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:30:07, skipping insertion in model container [2020-11-29 18:30:07,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:30:07" (1/1) ... [2020-11-29 18:30:07,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:30:07,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:30:07,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:30:07,857 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:30:07,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:30:07,886 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:30:07,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:30:07 WrapperNode [2020-11-29 18:30:07,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:30:07,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:30:07,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:30:07,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:30:07,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:30:07" (1/1) ... [2020-11-29 18:30:07,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:30:07" (1/1) ... [2020-11-29 18:30:07,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:30:07,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:30:07,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:30:07,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:30:07,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:30:07" (1/1) ... [2020-11-29 18:30:07,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:30:07" (1/1) ... [2020-11-29 18:30:07,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:30:07" (1/1) ... [2020-11-29 18:30:07,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:30:07" (1/1) ... [2020-11-29 18:30:07,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:30:07" (1/1) ... [2020-11-29 18:30:07,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:30:07" (1/1) ... [2020-11-29 18:30:07,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:30:07" (1/1) ... [2020-11-29 18:30:07,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:30:07,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:30:07,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:30:07,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:30:07,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:30:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:30:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:30:08,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:30:08,341 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:30:08,341 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 18:30:08,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:30:08 BoogieIcfgContainer [2020-11-29 18:30:08,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:30:08,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:30:08,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:30:08,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:30:08,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:30:07" (1/3) ... [2020-11-29 18:30:08,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4457e555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:30:08, skipping insertion in model container [2020-11-29 18:30:08,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:30:07" (2/3) ... [2020-11-29 18:30:08,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4457e555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:30:08, skipping insertion in model container [2020-11-29 18:30:08,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:30:08" (3/3) ... [2020-11-29 18:30:08,369 INFO L111 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2020-11-29 18:30:08,382 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:30:08,392 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 18:30:08,422 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 18:30:08,451 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:30:08,451 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:30:08,452 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:30:08,452 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:30:08,452 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:30:08,452 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:30:08,453 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:30:08,453 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:30:08,467 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-29 18:30:08,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 18:30:08,475 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:08,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-29 18:30:08,476 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:08,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:08,487 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2020-11-29 18:30:08,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:08,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804546350] [2020-11-29 18:30:08,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:08,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:08,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804546350] [2020-11-29 18:30:08,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:30:08,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:30:08,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898978426] [2020-11-29 18:30:08,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:30:08,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:08,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:30:08,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:30:08,699 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-11-29 18:30:08,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:08,801 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2020-11-29 18:30:08,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:30:08,804 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-29 18:30:08,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:08,818 INFO L225 Difference]: With dead ends: 49 [2020-11-29 18:30:08,818 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 18:30:08,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:30:08,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 18:30:08,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-11-29 18:30:08,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 18:30:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-29 18:30:08,891 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2020-11-29 18:30:08,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:08,891 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-29 18:30:08,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:30:08,892 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-29 18:30:08,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 18:30:08,892 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:08,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-29 18:30:08,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:30:08,894 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:08,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:08,897 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2020-11-29 18:30:08,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:08,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078338408] [2020-11-29 18:30:08,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:08,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078338408] [2020-11-29 18:30:08,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:30:08,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 18:30:08,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527873417] [2020-11-29 18:30:08,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:30:08,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:08,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:30:08,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:30:08,944 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2020-11-29 18:30:09,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:09,010 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-11-29 18:30:09,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:30:09,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-29 18:30:09,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:09,013 INFO L225 Difference]: With dead ends: 21 [2020-11-29 18:30:09,014 INFO L226 Difference]: Without dead ends: 20 [2020-11-29 18:30:09,015 INFO L677 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 [2020-11-29 18:30:09,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-29 18:30:09,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-29 18:30:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 18:30:09,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-11-29 18:30:09,025 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 4 [2020-11-29 18:30:09,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:09,025 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-11-29 18:30:09,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:30:09,026 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-11-29 18:30:09,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 18:30:09,028 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:09,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 18:30:09,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:30:09,030 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:09,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:09,033 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2020-11-29 18:30:09,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:09,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588882053] [2020-11-29 18:30:09,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:09,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588882053] [2020-11-29 18:30:09,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:30:09,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 18:30:09,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261970875] [2020-11-29 18:30:09,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:30:09,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:09,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:30:09,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:30:09,067 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 3 states. [2020-11-29 18:30:09,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:09,104 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-11-29 18:30:09,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:30:09,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-29 18:30:09,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:09,107 INFO L225 Difference]: With dead ends: 25 [2020-11-29 18:30:09,107 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 18:30:09,108 INFO L677 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 [2020-11-29 18:30:09,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 18:30:09,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2020-11-29 18:30:09,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 18:30:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-11-29 18:30:09,118 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2020-11-29 18:30:09,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:09,119 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-11-29 18:30:09,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:30:09,124 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-11-29 18:30:09,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 18:30:09,125 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:09,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:30:09,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 18:30:09,128 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:09,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:09,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1365891962, now seen corresponding path program 1 times [2020-11-29 18:30:09,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:09,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850322405] [2020-11-29 18:30:09,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:09,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850322405] [2020-11-29 18:30:09,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:30:09,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 18:30:09,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337898856] [2020-11-29 18:30:09,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:30:09,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:09,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:30:09,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:30:09,178 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2020-11-29 18:30:09,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:09,199 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-11-29 18:30:09,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:30:09,200 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-29 18:30:09,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:09,201 INFO L225 Difference]: With dead ends: 18 [2020-11-29 18:30:09,201 INFO L226 Difference]: Without dead ends: 17 [2020-11-29 18:30:09,201 INFO L677 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 [2020-11-29 18:30:09,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-29 18:30:09,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-29 18:30:09,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 18:30:09,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-29 18:30:09,206 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2020-11-29 18:30:09,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:09,206 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-29 18:30:09,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:30:09,206 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-29 18:30:09,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 18:30:09,207 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:09,207 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:30:09,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 18:30:09,207 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:09,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:09,212 INFO L82 PathProgramCache]: Analyzing trace with hash -767237628, now seen corresponding path program 1 times [2020-11-29 18:30:09,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:09,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998614812] [2020-11-29 18:30:09,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:09,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:09,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998614812] [2020-11-29 18:30:09,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976018407] [2020-11-29 18:30:09,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:09,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 18:30:09,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:09,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:09,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2] total 5 [2020-11-29 18:30:09,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077419083] [2020-11-29 18:30:09,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:30:09,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:09,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:30:09,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:30:09,401 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 6 states. [2020-11-29 18:30:09,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:09,551 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-11-29 18:30:09,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:30:09,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-29 18:30:09,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:09,553 INFO L225 Difference]: With dead ends: 35 [2020-11-29 18:30:09,568 INFO L226 Difference]: Without dead ends: 24 [2020-11-29 18:30:09,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-29 18:30:09,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-29 18:30:09,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-11-29 18:30:09,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 18:30:09,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-29 18:30:09,575 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 10 [2020-11-29 18:30:09,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:09,576 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-29 18:30:09,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:30:09,576 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-29 18:30:09,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 18:30:09,577 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:09,577 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1] [2020-11-29 18:30:09,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:09,778 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:09,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:09,779 INFO L82 PathProgramCache]: Analyzing trace with hash -907820675, now seen corresponding path program 2 times [2020-11-29 18:30:09,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:09,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142443313] [2020-11-29 18:30:09,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:09,838 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 18:30:09,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142443313] [2020-11-29 18:30:09,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:30:09,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:30:09,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267666536] [2020-11-29 18:30:09,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:30:09,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:09,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:30:09,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:30:09,841 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 4 states. [2020-11-29 18:30:09,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:09,903 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-11-29 18:30:09,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:30:09,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-29 18:30:09,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:09,904 INFO L225 Difference]: With dead ends: 32 [2020-11-29 18:30:09,904 INFO L226 Difference]: Without dead ends: 30 [2020-11-29 18:30:09,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:30:09,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-29 18:30:09,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-11-29 18:30:09,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 18:30:09,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-11-29 18:30:09,916 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 16 [2020-11-29 18:30:09,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:09,918 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-11-29 18:30:09,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:30:09,919 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-11-29 18:30:09,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 18:30:09,920 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:09,920 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1] [2020-11-29 18:30:09,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 18:30:09,921 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:09,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:09,923 INFO L82 PathProgramCache]: Analyzing trace with hash -907820867, now seen corresponding path program 1 times [2020-11-29 18:30:09,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:09,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148093796] [2020-11-29 18:30:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:10,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:10,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148093796] [2020-11-29 18:30:10,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149847591] [2020-11-29 18:30:10,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-29 18:30:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:10,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:30:10,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:10,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:10,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-11-29 18:30:10,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131985769] [2020-11-29 18:30:10,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 18:30:10,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:10,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:30:10,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:30:10,062 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-11-29 18:30:10,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:10,154 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2020-11-29 18:30:10,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:30:10,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-29 18:30:10,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:10,157 INFO L225 Difference]: With dead ends: 60 [2020-11-29 18:30:10,157 INFO L226 Difference]: Without dead ends: 59 [2020-11-29 18:30:10,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:30:10,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-29 18:30:10,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2020-11-29 18:30:10,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 18:30:10,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2020-11-29 18:30:10,176 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 16 [2020-11-29 18:30:10,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:10,176 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2020-11-29 18:30:10,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 18:30:10,177 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2020-11-29 18:30:10,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 18:30:10,177 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:10,177 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-29 18:30:10,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:10,409 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:10,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:10,409 INFO L82 PathProgramCache]: Analyzing trace with hash -537305888, now seen corresponding path program 1 times [2020-11-29 18:30:10,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:10,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474480569] [2020-11-29 18:30:10,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 18:30:10,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474480569] [2020-11-29 18:30:10,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238632851] [2020-11-29 18:30:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:10,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:30:10,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:10,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:10,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-11-29 18:30:10,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570508625] [2020-11-29 18:30:10,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 18:30:10,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:10,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 18:30:10,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:30:10,710 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand 7 states. [2020-11-29 18:30:10,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:10,768 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2020-11-29 18:30:10,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 18:30:10,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-11-29 18:30:10,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:10,770 INFO L225 Difference]: With dead ends: 75 [2020-11-29 18:30:10,770 INFO L226 Difference]: Without dead ends: 40 [2020-11-29 18:30:10,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:30:10,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-29 18:30:10,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-11-29 18:30:10,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 18:30:10,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-11-29 18:30:10,786 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 18 [2020-11-29 18:30:10,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:10,787 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-11-29 18:30:10,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 18:30:10,787 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-11-29 18:30:10,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 18:30:10,788 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:10,788 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1] [2020-11-29 18:30:10,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:10,997 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:10,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:10,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1586405002, now seen corresponding path program 2 times [2020-11-29 18:30:10,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:10,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613474546] [2020-11-29 18:30:10,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:11,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613474546] [2020-11-29 18:30:11,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239495918] [2020-11-29 18:30:11,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-29 18:30:11,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:30:11,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:11,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 18:30:11,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:11,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:11,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-11-29 18:30:11,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113220678] [2020-11-29 18:30:11,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:30:11,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:11,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:30:11,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:30:11,159 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 6 states. [2020-11-29 18:30:11,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:11,226 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-11-29 18:30:11,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:30:11,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-29 18:30:11,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:11,228 INFO L225 Difference]: With dead ends: 42 [2020-11-29 18:30:11,228 INFO L226 Difference]: Without dead ends: 41 [2020-11-29 18:30:11,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:30:11,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-29 18:30:11,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-11-29 18:30:11,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 18:30:11,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-11-29 18:30:11,235 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 22 [2020-11-29 18:30:11,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:11,235 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-11-29 18:30:11,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:30:11,235 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-11-29 18:30:11,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 18:30:11,244 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:11,244 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1] [2020-11-29 18:30:11,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:11,472 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:11,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:11,472 INFO L82 PathProgramCache]: Analyzing trace with hash -89664657, now seen corresponding path program 3 times [2020-11-29 18:30:11,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:11,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719889626] [2020-11-29 18:30:11,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:11,586 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:11,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719889626] [2020-11-29 18:30:11,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626493761] [2020-11-29 18:30:11,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:11,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-29 18:30:11,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:11,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 18:30:11,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:11,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:11,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-29 18:30:11,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365764702] [2020-11-29 18:30:11,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 18:30:11,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:11,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 18:30:11,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:30:11,672 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 7 states. [2020-11-29 18:30:11,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:11,758 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2020-11-29 18:30:11,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 18:30:11,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-11-29 18:30:11,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:11,760 INFO L225 Difference]: With dead ends: 107 [2020-11-29 18:30:11,760 INFO L226 Difference]: Without dead ends: 106 [2020-11-29 18:30:11,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:30:11,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-29 18:30:11,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 96. [2020-11-29 18:30:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-29 18:30:11,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2020-11-29 18:30:11,776 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 28 [2020-11-29 18:30:11,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:11,777 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2020-11-29 18:30:11,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 18:30:11,777 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2020-11-29 18:30:11,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 18:30:11,778 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:11,779 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1] [2020-11-29 18:30:11,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 18:30:11,996 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:11,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:11,997 INFO L82 PathProgramCache]: Analyzing trace with hash 661989032, now seen corresponding path program 4 times [2020-11-29 18:30:11,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:11,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798837796] [2020-11-29 18:30:11,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:12,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798837796] [2020-11-29 18:30:12,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636530526] [2020-11-29 18:30:12,108 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:12,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:30:12,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:12,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 18:30:12,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:12,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:12,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-29 18:30:12,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231548032] [2020-11-29 18:30:12,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 18:30:12,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:12,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 18:30:12,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-29 18:30:12,211 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand 8 states. [2020-11-29 18:30:12,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:12,322 INFO L93 Difference]: Finished difference Result 183 states and 210 transitions. [2020-11-29 18:30:12,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 18:30:12,322 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-11-29 18:30:12,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:12,324 INFO L225 Difference]: With dead ends: 183 [2020-11-29 18:30:12,324 INFO L226 Difference]: Without dead ends: 182 [2020-11-29 18:30:12,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-29 18:30:12,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-29 18:30:12,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 111. [2020-11-29 18:30:12,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-11-29 18:30:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2020-11-29 18:30:12,343 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 34 [2020-11-29 18:30:12,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:12,343 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2020-11-29 18:30:12,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 18:30:12,343 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2020-11-29 18:30:12,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-29 18:30:12,345 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:12,345 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1] [2020-11-29 18:30:12,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:12,572 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:12,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:12,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1050459643, now seen corresponding path program 2 times [2020-11-29 18:30:12,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:12,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494500207] [2020-11-29 18:30:12,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 22 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 18:30:12,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494500207] [2020-11-29 18:30:12,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020249634] [2020-11-29 18:30:12,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-29 18:30:12,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:30:12,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:12,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 18:30:12,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 22 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 18:30:12,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:12,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-29 18:30:12,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897876944] [2020-11-29 18:30:12,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 18:30:12,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:12,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 18:30:12,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:30:12,747 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand 7 states. [2020-11-29 18:30:12,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:12,802 INFO L93 Difference]: Finished difference Result 211 states and 244 transitions. [2020-11-29 18:30:12,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 18:30:12,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-11-29 18:30:12,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:12,806 INFO L225 Difference]: With dead ends: 211 [2020-11-29 18:30:12,806 INFO L226 Difference]: Without dead ends: 121 [2020-11-29 18:30:12,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:30:12,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-11-29 18:30:12,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2020-11-29 18:30:12,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-11-29 18:30:12,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 133 transitions. [2020-11-29 18:30:12,825 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 133 transitions. Word has length 36 [2020-11-29 18:30:12,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:12,825 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 133 transitions. [2020-11-29 18:30:12,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 18:30:12,825 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 133 transitions. [2020-11-29 18:30:12,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-29 18:30:12,826 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:12,827 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1] [2020-11-29 18:30:13,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:13,049 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:13,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:13,050 INFO L82 PathProgramCache]: Analyzing trace with hash 855337761, now seen corresponding path program 5 times [2020-11-29 18:30:13,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:13,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127026448] [2020-11-29 18:30:13,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:13,182 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:13,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127026448] [2020-11-29 18:30:13,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399462602] [2020-11-29 18:30:13,182 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:13,230 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-11-29 18:30:13,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:13,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 18:30:13,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:13,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:13,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-11-29 18:30:13,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923579485] [2020-11-29 18:30:13,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 18:30:13,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:13,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 18:30:13,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-29 18:30:13,263 INFO L87 Difference]: Start difference. First operand 117 states and 133 transitions. Second operand 9 states. [2020-11-29 18:30:13,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:13,385 INFO L93 Difference]: Finished difference Result 221 states and 254 transitions. [2020-11-29 18:30:13,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 18:30:13,386 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-11-29 18:30:13,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:13,388 INFO L225 Difference]: With dead ends: 221 [2020-11-29 18:30:13,388 INFO L226 Difference]: Without dead ends: 220 [2020-11-29 18:30:13,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-29 18:30:13,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-11-29 18:30:13,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 132. [2020-11-29 18:30:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-11-29 18:30:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 151 transitions. [2020-11-29 18:30:13,399 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 151 transitions. Word has length 40 [2020-11-29 18:30:13,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:13,399 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 151 transitions. [2020-11-29 18:30:13,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 18:30:13,400 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 151 transitions. [2020-11-29 18:30:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-29 18:30:13,401 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:13,401 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 2, 2, 2, 1, 1] [2020-11-29 18:30:13,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 18:30:13,621 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:13,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:13,621 INFO L82 PathProgramCache]: Analyzing trace with hash 74075198, now seen corresponding path program 3 times [2020-11-29 18:30:13,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:13,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551559518] [2020-11-29 18:30:13,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:13,734 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 70 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 18:30:13,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551559518] [2020-11-29 18:30:13,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664017417] [2020-11-29 18:30:13,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:13,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-29 18:30:13,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:13,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:30:13,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-11-29 18:30:13,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:13,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2020-11-29 18:30:13,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566938855] [2020-11-29 18:30:13,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 18:30:13,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:13,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 18:30:13,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-29 18:30:13,846 INFO L87 Difference]: Start difference. First operand 132 states and 151 transitions. Second operand 11 states. [2020-11-29 18:30:13,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:13,934 INFO L93 Difference]: Finished difference Result 169 states and 194 transitions. [2020-11-29 18:30:13,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 18:30:13,935 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-11-29 18:30:13,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:13,936 INFO L225 Difference]: With dead ends: 169 [2020-11-29 18:30:13,936 INFO L226 Difference]: Without dead ends: 64 [2020-11-29 18:30:13,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-29 18:30:13,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-29 18:30:13,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-11-29 18:30:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-29 18:30:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2020-11-29 18:30:13,941 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 42 [2020-11-29 18:30:13,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:13,941 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2020-11-29 18:30:13,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 18:30:13,941 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2020-11-29 18:30:13,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-29 18:30:13,943 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:13,943 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1] [2020-11-29 18:30:14,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:14,161 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:14,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:14,161 INFO L82 PathProgramCache]: Analyzing trace with hash 714125530, now seen corresponding path program 6 times [2020-11-29 18:30:14,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:14,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718783769] [2020-11-29 18:30:14,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:14,302 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:14,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718783769] [2020-11-29 18:30:14,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114503721] [2020-11-29 18:30:14,303 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:14,367 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-11-29 18:30:14,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:14,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 18:30:14,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:14,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:14,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-11-29 18:30:14,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141137695] [2020-11-29 18:30:14,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 18:30:14,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:14,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 18:30:14,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:30:14,395 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand 10 states. [2020-11-29 18:30:14,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:14,527 INFO L93 Difference]: Finished difference Result 216 states and 245 transitions. [2020-11-29 18:30:14,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 18:30:14,527 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-11-29 18:30:14,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:14,529 INFO L225 Difference]: With dead ends: 216 [2020-11-29 18:30:14,529 INFO L226 Difference]: Without dead ends: 215 [2020-11-29 18:30:14,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:30:14,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-11-29 18:30:14,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 198. [2020-11-29 18:30:14,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-11-29 18:30:14,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 226 transitions. [2020-11-29 18:30:14,548 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 226 transitions. Word has length 46 [2020-11-29 18:30:14,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:14,549 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 226 transitions. [2020-11-29 18:30:14,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 18:30:14,549 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 226 transitions. [2020-11-29 18:30:14,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-29 18:30:14,554 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:14,554 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1] [2020-11-29 18:30:14,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 18:30:14,759 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:14,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:14,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1497430061, now seen corresponding path program 7 times [2020-11-29 18:30:14,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:14,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901481735] [2020-11-29 18:30:14,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:14,935 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:14,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901481735] [2020-11-29 18:30:14,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167149066] [2020-11-29 18:30:14,936 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:14,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 18:30:14,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:15,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:15,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-11-29 18:30:15,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454194923] [2020-11-29 18:30:15,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 18:30:15,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:15,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 18:30:15,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-29 18:30:15,011 INFO L87 Difference]: Start difference. First operand 198 states and 226 transitions. Second operand 11 states. [2020-11-29 18:30:15,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:15,174 INFO L93 Difference]: Finished difference Result 378 states and 436 transitions. [2020-11-29 18:30:15,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 18:30:15,175 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-11-29 18:30:15,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:15,178 INFO L225 Difference]: With dead ends: 378 [2020-11-29 18:30:15,178 INFO L226 Difference]: Without dead ends: 377 [2020-11-29 18:30:15,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-29 18:30:15,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-11-29 18:30:15,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 219. [2020-11-29 18:30:15,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-11-29 18:30:15,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 251 transitions. [2020-11-29 18:30:15,190 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 251 transitions. Word has length 52 [2020-11-29 18:30:15,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:15,191 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 251 transitions. [2020-11-29 18:30:15,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 18:30:15,191 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 251 transitions. [2020-11-29 18:30:15,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-29 18:30:15,193 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:15,193 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1] [2020-11-29 18:30:15,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-29 18:30:15,393 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:15,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:15,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1807450100, now seen corresponding path program 8 times [2020-11-29 18:30:15,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:15,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094177261] [2020-11-29 18:30:15,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:15,541 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:15,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094177261] [2020-11-29 18:30:15,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126356086] [2020-11-29 18:30:15,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:15,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:30:15,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:15,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 18:30:15,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:15,608 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:15,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:15,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-11-29 18:30:15,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256972682] [2020-11-29 18:30:15,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 18:30:15,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:15,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 18:30:15,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-11-29 18:30:15,610 INFO L87 Difference]: Start difference. First operand 219 states and 251 transitions. Second operand 12 states. [2020-11-29 18:30:15,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:15,794 INFO L93 Difference]: Finished difference Result 422 states and 488 transitions. [2020-11-29 18:30:15,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 18:30:15,796 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2020-11-29 18:30:15,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:15,799 INFO L225 Difference]: With dead ends: 422 [2020-11-29 18:30:15,799 INFO L226 Difference]: Without dead ends: 421 [2020-11-29 18:30:15,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-11-29 18:30:15,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-11-29 18:30:15,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 240. [2020-11-29 18:30:15,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-11-29 18:30:15,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 276 transitions. [2020-11-29 18:30:15,818 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 276 transitions. Word has length 58 [2020-11-29 18:30:15,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:15,820 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 276 transitions. [2020-11-29 18:30:15,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 18:30:15,820 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 276 transitions. [2020-11-29 18:30:15,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-29 18:30:15,823 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:15,824 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 7, 7, 7, 3, 3, 3, 1, 1] [2020-11-29 18:30:16,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-29 18:30:16,028 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:16,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:16,029 INFO L82 PathProgramCache]: Analyzing trace with hash -410764061, now seen corresponding path program 4 times [2020-11-29 18:30:16,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:16,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960851085] [2020-11-29 18:30:16,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:16,165 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 67 proven. 140 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 18:30:16,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960851085] [2020-11-29 18:30:16,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908386171] [2020-11-29 18:30:16,165 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:16,197 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:30:16,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:16,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 18:30:16,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 67 proven. 140 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 18:30:16,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:16,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-11-29 18:30:16,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182808823] [2020-11-29 18:30:16,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 18:30:16,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:16,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 18:30:16,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:30:16,231 INFO L87 Difference]: Start difference. First operand 240 states and 276 transitions. Second operand 10 states. [2020-11-29 18:30:16,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:16,297 INFO L93 Difference]: Finished difference Result 451 states and 524 transitions. [2020-11-29 18:30:16,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 18:30:16,298 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 60 [2020-11-29 18:30:16,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:16,300 INFO L225 Difference]: With dead ends: 451 [2020-11-29 18:30:16,300 INFO L226 Difference]: Without dead ends: 250 [2020-11-29 18:30:16,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:30:16,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-11-29 18:30:16,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 246. [2020-11-29 18:30:16,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-11-29 18:30:16,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 282 transitions. [2020-11-29 18:30:16,315 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 282 transitions. Word has length 60 [2020-11-29 18:30:16,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:16,315 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 282 transitions. [2020-11-29 18:30:16,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 18:30:16,315 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 282 transitions. [2020-11-29 18:30:16,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-29 18:30:16,319 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:16,319 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1] [2020-11-29 18:30:16,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-29 18:30:16,544 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:16,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:16,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1024665989, now seen corresponding path program 9 times [2020-11-29 18:30:16,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:16,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083459180] [2020-11-29 18:30:16,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:16,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083459180] [2020-11-29 18:30:16,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275987224] [2020-11-29 18:30:16,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:16,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-29 18:30:16,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:16,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 18:30:16,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:16,790 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:16,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:16,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-11-29 18:30:16,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662147042] [2020-11-29 18:30:16,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 18:30:16,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:16,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 18:30:16,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-11-29 18:30:16,792 INFO L87 Difference]: Start difference. First operand 246 states and 282 transitions. Second operand 13 states. [2020-11-29 18:30:16,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:16,939 INFO L93 Difference]: Finished difference Result 472 states and 546 transitions. [2020-11-29 18:30:16,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 18:30:16,939 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2020-11-29 18:30:16,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:16,942 INFO L225 Difference]: With dead ends: 472 [2020-11-29 18:30:16,942 INFO L226 Difference]: Without dead ends: 471 [2020-11-29 18:30:16,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-11-29 18:30:16,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-11-29 18:30:16,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 267. [2020-11-29 18:30:16,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-11-29 18:30:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 307 transitions. [2020-11-29 18:30:16,957 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 307 transitions. Word has length 64 [2020-11-29 18:30:16,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:16,958 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 307 transitions. [2020-11-29 18:30:16,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 18:30:16,958 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 307 transitions. [2020-11-29 18:30:16,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-29 18:30:16,959 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:16,959 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 8, 8, 8, 3, 3, 3, 1, 1] [2020-11-29 18:30:17,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:17,161 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:17,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:17,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1756468196, now seen corresponding path program 5 times [2020-11-29 18:30:17,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:17,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99537783] [2020-11-29 18:30:17,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:17,309 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 76 proven. 184 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 18:30:17,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99537783] [2020-11-29 18:30:17,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866701963] [2020-11-29 18:30:17,310 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:17,371 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-11-29 18:30:17,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:17,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 18:30:17,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 76 proven. 184 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 18:30:17,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:17,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-11-29 18:30:17,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300225783] [2020-11-29 18:30:17,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 18:30:17,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:17,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 18:30:17,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-29 18:30:17,404 INFO L87 Difference]: Start difference. First operand 267 states and 307 transitions. Second operand 11 states. [2020-11-29 18:30:17,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:17,508 INFO L93 Difference]: Finished difference Result 499 states and 580 transitions. [2020-11-29 18:30:17,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 18:30:17,508 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2020-11-29 18:30:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:17,510 INFO L225 Difference]: With dead ends: 499 [2020-11-29 18:30:17,510 INFO L226 Difference]: Without dead ends: 277 [2020-11-29 18:30:17,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-29 18:30:17,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-11-29 18:30:17,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 273. [2020-11-29 18:30:17,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-11-29 18:30:17,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 313 transitions. [2020-11-29 18:30:17,524 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 313 transitions. Word has length 66 [2020-11-29 18:30:17,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:17,525 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 313 transitions. [2020-11-29 18:30:17,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 18:30:17,525 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 313 transitions. [2020-11-29 18:30:17,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-11-29 18:30:17,526 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:17,526 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1] [2020-11-29 18:30:17,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:17,744 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:17,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:17,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1856957378, now seen corresponding path program 10 times [2020-11-29 18:30:17,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:17,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105337172] [2020-11-29 18:30:17,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:17,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105337172] [2020-11-29 18:30:17,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021492917] [2020-11-29 18:30:17,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:18,016 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:30:18,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:18,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 18:30:18,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:18,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:18,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-11-29 18:30:18,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804954910] [2020-11-29 18:30:18,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 18:30:18,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:18,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 18:30:18,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-11-29 18:30:18,069 INFO L87 Difference]: Start difference. First operand 273 states and 313 transitions. Second operand 14 states. [2020-11-29 18:30:18,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:18,269 INFO L93 Difference]: Finished difference Result 522 states and 604 transitions. [2020-11-29 18:30:18,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 18:30:18,270 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2020-11-29 18:30:18,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:18,274 INFO L225 Difference]: With dead ends: 522 [2020-11-29 18:30:18,274 INFO L226 Difference]: Without dead ends: 521 [2020-11-29 18:30:18,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-11-29 18:30:18,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-11-29 18:30:18,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 294. [2020-11-29 18:30:18,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-11-29 18:30:18,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 338 transitions. [2020-11-29 18:30:18,290 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 338 transitions. Word has length 70 [2020-11-29 18:30:18,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:18,291 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 338 transitions. [2020-11-29 18:30:18,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 18:30:18,291 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 338 transitions. [2020-11-29 18:30:18,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-11-29 18:30:18,292 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:18,292 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 9, 9, 9, 3, 3, 3, 1, 1] [2020-11-29 18:30:18,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:18,508 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:18,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:18,509 INFO L82 PathProgramCache]: Analyzing trace with hash -742617963, now seen corresponding path program 6 times [2020-11-29 18:30:18,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:18,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786804529] [2020-11-29 18:30:18,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:18,678 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 85 proven. 234 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 18:30:18,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786804529] [2020-11-29 18:30:18,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208281461] [2020-11-29 18:30:18,679 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:18,707 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-29 18:30:18,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:18,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 18:30:18,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:18,862 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 126 proven. 21 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2020-11-29 18:30:18,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:18,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 16 [2020-11-29 18:30:18,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082655508] [2020-11-29 18:30:18,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 18:30:18,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:18,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 18:30:18,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-11-29 18:30:18,866 INFO L87 Difference]: Start difference. First operand 294 states and 338 transitions. Second operand 16 states. [2020-11-29 18:30:19,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:19,013 INFO L93 Difference]: Finished difference Result 615 states and 724 transitions. [2020-11-29 18:30:19,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 18:30:19,013 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 72 [2020-11-29 18:30:19,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:19,016 INFO L225 Difference]: With dead ends: 615 [2020-11-29 18:30:19,017 INFO L226 Difference]: Without dead ends: 372 [2020-11-29 18:30:19,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-11-29 18:30:19,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-11-29 18:30:19,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 363. [2020-11-29 18:30:19,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-11-29 18:30:19,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 416 transitions. [2020-11-29 18:30:19,034 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 416 transitions. Word has length 72 [2020-11-29 18:30:19,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:19,035 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 416 transitions. [2020-11-29 18:30:19,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 18:30:19,035 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 416 transitions. [2020-11-29 18:30:19,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-29 18:30:19,036 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:19,036 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1] [2020-11-29 18:30:19,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-29 18:30:19,252 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:19,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:19,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1336389577, now seen corresponding path program 11 times [2020-11-29 18:30:19,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:19,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578912737] [2020-11-29 18:30:19,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:19,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578912737] [2020-11-29 18:30:19,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911957215] [2020-11-29 18:30:19,488 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:19,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-11-29 18:30:19,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:19,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 18:30:19,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:19,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:19,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-11-29 18:30:19,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435247146] [2020-11-29 18:30:19,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-29 18:30:19,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:19,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-29 18:30:19,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-11-29 18:30:19,567 INFO L87 Difference]: Start difference. First operand 363 states and 416 transitions. Second operand 15 states. [2020-11-29 18:30:19,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:19,803 INFO L93 Difference]: Finished difference Result 695 states and 804 transitions. [2020-11-29 18:30:19,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 18:30:19,803 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 76 [2020-11-29 18:30:19,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:19,808 INFO L225 Difference]: With dead ends: 695 [2020-11-29 18:30:19,808 INFO L226 Difference]: Without dead ends: 694 [2020-11-29 18:30:19,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-11-29 18:30:19,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-11-29 18:30:19,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 390. [2020-11-29 18:30:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-11-29 18:30:19,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 448 transitions. [2020-11-29 18:30:19,844 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 448 transitions. Word has length 76 [2020-11-29 18:30:19,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:19,845 INFO L481 AbstractCegarLoop]: Abstraction has 390 states and 448 transitions. [2020-11-29 18:30:19,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-29 18:30:19,845 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 448 transitions. [2020-11-29 18:30:19,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-11-29 18:30:19,846 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:19,846 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1] [2020-11-29 18:30:20,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-29 18:30:20,072 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:20,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:20,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1313411728, now seen corresponding path program 12 times [2020-11-29 18:30:20,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:20,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815850579] [2020-11-29 18:30:20,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:20,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815850579] [2020-11-29 18:30:20,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377860981] [2020-11-29 18:30:20,335 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:20,394 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2020-11-29 18:30:20,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:20,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 18:30:20,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:20,442 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:20,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:20,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-11-29 18:30:20,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121594656] [2020-11-29 18:30:20,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 18:30:20,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:20,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 18:30:20,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-11-29 18:30:20,445 INFO L87 Difference]: Start difference. First operand 390 states and 448 transitions. Second operand 16 states. [2020-11-29 18:30:20,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:20,746 INFO L93 Difference]: Finished difference Result 751 states and 870 transitions. [2020-11-29 18:30:20,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 18:30:20,747 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 82 [2020-11-29 18:30:20,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:20,751 INFO L225 Difference]: With dead ends: 751 [2020-11-29 18:30:20,751 INFO L226 Difference]: Without dead ends: 750 [2020-11-29 18:30:20,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-11-29 18:30:20,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2020-11-29 18:30:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 417. [2020-11-29 18:30:20,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-11-29 18:30:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 480 transitions. [2020-11-29 18:30:20,770 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 480 transitions. Word has length 82 [2020-11-29 18:30:20,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:20,770 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 480 transitions. [2020-11-29 18:30:20,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 18:30:20,770 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 480 transitions. [2020-11-29 18:30:20,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-29 18:30:20,771 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:20,771 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1] [2020-11-29 18:30:20,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-29 18:30:20,972 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:20,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:20,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1372652567, now seen corresponding path program 13 times [2020-11-29 18:30:20,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:20,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479602191] [2020-11-29 18:30:20,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:21,272 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:21,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479602191] [2020-11-29 18:30:21,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076450707] [2020-11-29 18:30:21,273 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:21,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 18:30:21,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:21,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:21,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-11-29 18:30:21,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639349910] [2020-11-29 18:30:21,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-29 18:30:21,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:21,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-29 18:30:21,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-11-29 18:30:21,360 INFO L87 Difference]: Start difference. First operand 417 states and 480 transitions. Second operand 17 states. [2020-11-29 18:30:21,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:21,674 INFO L93 Difference]: Finished difference Result 807 states and 936 transitions. [2020-11-29 18:30:21,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-29 18:30:21,675 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 88 [2020-11-29 18:30:21,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:21,680 INFO L225 Difference]: With dead ends: 807 [2020-11-29 18:30:21,681 INFO L226 Difference]: Without dead ends: 806 [2020-11-29 18:30:21,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-11-29 18:30:21,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-11-29 18:30:21,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 444. [2020-11-29 18:30:21,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-11-29 18:30:21,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 512 transitions. [2020-11-29 18:30:21,707 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 512 transitions. Word has length 88 [2020-11-29 18:30:21,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:21,707 INFO L481 AbstractCegarLoop]: Abstraction has 444 states and 512 transitions. [2020-11-29 18:30:21,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-29 18:30:21,707 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 512 transitions. [2020-11-29 18:30:21,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-11-29 18:30:21,709 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:21,709 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 11, 11, 11, 4, 4, 4, 1, 1] [2020-11-29 18:30:21,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-29 18:30:21,932 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:21,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:21,933 INFO L82 PathProgramCache]: Analyzing trace with hash 289561722, now seen corresponding path program 7 times [2020-11-29 18:30:21,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:21,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052745686] [2020-11-29 18:30:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 352 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-29 18:30:22,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052745686] [2020-11-29 18:30:22,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859333363] [2020-11-29 18:30:22,121 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:22,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 18:30:22,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 352 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-29 18:30:22,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:22,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-11-29 18:30:22,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991317292] [2020-11-29 18:30:22,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 18:30:22,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:22,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 18:30:22,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-11-29 18:30:22,192 INFO L87 Difference]: Start difference. First operand 444 states and 512 transitions. Second operand 14 states. [2020-11-29 18:30:22,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:22,306 INFO L93 Difference]: Finished difference Result 835 states and 972 transitions. [2020-11-29 18:30:22,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 18:30:22,307 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 90 [2020-11-29 18:30:22,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:22,310 INFO L225 Difference]: With dead ends: 835 [2020-11-29 18:30:22,310 INFO L226 Difference]: Without dead ends: 454 [2020-11-29 18:30:22,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-11-29 18:30:22,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-11-29 18:30:22,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 450. [2020-11-29 18:30:22,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-11-29 18:30:22,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 518 transitions. [2020-11-29 18:30:22,330 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 518 transitions. Word has length 90 [2020-11-29 18:30:22,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:22,331 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 518 transitions. [2020-11-29 18:30:22,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 18:30:22,331 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 518 transitions. [2020-11-29 18:30:22,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-29 18:30:22,332 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:22,333 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1] [2020-11-29 18:30:22,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-11-29 18:30:22,548 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:22,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:22,549 INFO L82 PathProgramCache]: Analyzing trace with hash 146181026, now seen corresponding path program 14 times [2020-11-29 18:30:22,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:22,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031965144] [2020-11-29 18:30:22,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:22,838 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:22,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031965144] [2020-11-29 18:30:22,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570747218] [2020-11-29 18:30:22,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:22,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:30:22,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:22,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 18:30:22,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:22,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:22,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-11-29 18:30:22,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414640671] [2020-11-29 18:30:22,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-29 18:30:22,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:22,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-29 18:30:22,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-11-29 18:30:22,936 INFO L87 Difference]: Start difference. First operand 450 states and 518 transitions. Second operand 18 states. [2020-11-29 18:30:23,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:23,257 INFO L93 Difference]: Finished difference Result 869 states and 1008 transitions. [2020-11-29 18:30:23,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-29 18:30:23,258 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2020-11-29 18:30:23,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:23,263 INFO L225 Difference]: With dead ends: 869 [2020-11-29 18:30:23,264 INFO L226 Difference]: Without dead ends: 868 [2020-11-29 18:30:23,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-11-29 18:30:23,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2020-11-29 18:30:23,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 477. [2020-11-29 18:30:23,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-11-29 18:30:23,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 550 transitions. [2020-11-29 18:30:23,290 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 550 transitions. Word has length 94 [2020-11-29 18:30:23,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:23,290 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 550 transitions. [2020-11-29 18:30:23,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-29 18:30:23,290 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 550 transitions. [2020-11-29 18:30:23,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-29 18:30:23,292 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:23,292 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 12, 12, 12, 4, 4, 4, 1, 1] [2020-11-29 18:30:23,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:23,508 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:23,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:23,509 INFO L82 PathProgramCache]: Analyzing trace with hash -400236045, now seen corresponding path program 8 times [2020-11-29 18:30:23,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:23,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113945806] [2020-11-29 18:30:23,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:23,734 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 162 proven. 420 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-29 18:30:23,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113945806] [2020-11-29 18:30:23,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611520069] [2020-11-29 18:30:23,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:23,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:30:23,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:23,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 18:30:23,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 162 proven. 420 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-29 18:30:23,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:23,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-11-29 18:30:23,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888201538] [2020-11-29 18:30:23,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-29 18:30:23,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:23,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-29 18:30:23,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-11-29 18:30:23,830 INFO L87 Difference]: Start difference. First operand 477 states and 550 transitions. Second operand 15 states. [2020-11-29 18:30:23,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:23,934 INFO L93 Difference]: Finished difference Result 895 states and 1042 transitions. [2020-11-29 18:30:23,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 18:30:23,935 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 96 [2020-11-29 18:30:23,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:23,939 INFO L225 Difference]: With dead ends: 895 [2020-11-29 18:30:23,940 INFO L226 Difference]: Without dead ends: 487 [2020-11-29 18:30:23,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-11-29 18:30:23,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2020-11-29 18:30:23,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 483. [2020-11-29 18:30:23,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-29 18:30:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 556 transitions. [2020-11-29 18:30:23,959 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 556 transitions. Word has length 96 [2020-11-29 18:30:23,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:23,960 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 556 transitions. [2020-11-29 18:30:23,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-29 18:30:23,960 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 556 transitions. [2020-11-29 18:30:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-29 18:30:23,961 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:23,962 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1] [2020-11-29 18:30:24,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-11-29 18:30:24,184 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:24,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:24,185 INFO L82 PathProgramCache]: Analyzing trace with hash -143151973, now seen corresponding path program 15 times [2020-11-29 18:30:24,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:24,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290064364] [2020-11-29 18:30:24,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:24,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290064364] [2020-11-29 18:30:24,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380289257] [2020-11-29 18:30:24,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:24,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2020-11-29 18:30:24,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:24,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 18:30:24,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:24,622 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:24,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:24,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-11-29 18:30:24,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800175028] [2020-11-29 18:30:24,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-29 18:30:24,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:24,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-29 18:30:24,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-11-29 18:30:24,625 INFO L87 Difference]: Start difference. First operand 483 states and 556 transitions. Second operand 19 states. [2020-11-29 18:30:24,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:24,970 INFO L93 Difference]: Finished difference Result 931 states and 1080 transitions. [2020-11-29 18:30:24,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 18:30:24,971 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 100 [2020-11-29 18:30:24,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:24,977 INFO L225 Difference]: With dead ends: 931 [2020-11-29 18:30:24,977 INFO L226 Difference]: Without dead ends: 930 [2020-11-29 18:30:24,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-11-29 18:30:24,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2020-11-29 18:30:25,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 510. [2020-11-29 18:30:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-11-29 18:30:25,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 588 transitions. [2020-11-29 18:30:25,004 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 588 transitions. Word has length 100 [2020-11-29 18:30:25,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:25,005 INFO L481 AbstractCegarLoop]: Abstraction has 510 states and 588 transitions. [2020-11-29 18:30:25,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-29 18:30:25,005 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 588 transitions. [2020-11-29 18:30:25,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-29 18:30:25,007 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:25,007 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 13, 13, 13, 4, 4, 4, 1, 1] [2020-11-29 18:30:25,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-11-29 18:30:25,221 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:25,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:25,221 INFO L82 PathProgramCache]: Analyzing trace with hash 723626156, now seen corresponding path program 9 times [2020-11-29 18:30:25,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:25,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517447010] [2020-11-29 18:30:25,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 175 proven. 494 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-29 18:30:25,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517447010] [2020-11-29 18:30:25,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957608215] [2020-11-29 18:30:25,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:25,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-29 18:30:25,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:25,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 18:30:25,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 285 proven. 59 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2020-11-29 18:30:25,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:25,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 22 [2020-11-29 18:30:25,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116948161] [2020-11-29 18:30:25,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-29 18:30:25,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:25,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-29 18:30:25,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-11-29 18:30:25,748 INFO L87 Difference]: Start difference. First operand 510 states and 588 transitions. Second operand 22 states. [2020-11-29 18:30:25,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:25,941 INFO L93 Difference]: Finished difference Result 1125 states and 1335 transitions. [2020-11-29 18:30:25,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-29 18:30:25,942 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 102 [2020-11-29 18:30:25,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:25,946 INFO L225 Difference]: With dead ends: 1125 [2020-11-29 18:30:25,946 INFO L226 Difference]: Without dead ends: 690 [2020-11-29 18:30:25,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-11-29 18:30:25,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-11-29 18:30:25,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 678. [2020-11-29 18:30:25,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-11-29 18:30:25,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 781 transitions. [2020-11-29 18:30:25,983 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 781 transitions. Word has length 102 [2020-11-29 18:30:25,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:25,984 INFO L481 AbstractCegarLoop]: Abstraction has 678 states and 781 transitions. [2020-11-29 18:30:25,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-29 18:30:25,984 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 781 transitions. [2020-11-29 18:30:25,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-29 18:30:25,986 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:25,986 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1] [2020-11-29 18:30:26,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:26,200 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:26,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:26,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1288728276, now seen corresponding path program 16 times [2020-11-29 18:30:26,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:26,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420394254] [2020-11-29 18:30:26,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:26,513 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:26,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420394254] [2020-11-29 18:30:26,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151639060] [2020-11-29 18:30:26,514 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:26,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:30:26,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:26,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 18:30:26,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:26,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:26,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-11-29 18:30:26,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947621401] [2020-11-29 18:30:26,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-29 18:30:26,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:26,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-29 18:30:26,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-11-29 18:30:26,601 INFO L87 Difference]: Start difference. First operand 678 states and 781 transitions. Second operand 20 states. [2020-11-29 18:30:26,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:26,960 INFO L93 Difference]: Finished difference Result 1317 states and 1528 transitions. [2020-11-29 18:30:26,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-29 18:30:26,961 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 106 [2020-11-29 18:30:26,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:26,968 INFO L225 Difference]: With dead ends: 1317 [2020-11-29 18:30:26,968 INFO L226 Difference]: Without dead ends: 1316 [2020-11-29 18:30:26,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-11-29 18:30:26,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2020-11-29 18:30:27,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 717. [2020-11-29 18:30:27,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-11-29 18:30:27,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 827 transitions. [2020-11-29 18:30:27,004 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 827 transitions. Word has length 106 [2020-11-29 18:30:27,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:27,004 INFO L481 AbstractCegarLoop]: Abstraction has 717 states and 827 transitions. [2020-11-29 18:30:27,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-29 18:30:27,004 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 827 transitions. [2020-11-29 18:30:27,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-11-29 18:30:27,006 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:27,006 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1] [2020-11-29 18:30:27,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:27,232 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:27,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:27,233 INFO L82 PathProgramCache]: Analyzing trace with hash -2142051763, now seen corresponding path program 17 times [2020-11-29 18:30:27,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:27,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38914870] [2020-11-29 18:30:27,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:27,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38914870] [2020-11-29 18:30:27,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136259213] [2020-11-29 18:30:27,603 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:27,658 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2020-11-29 18:30:27,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:27,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 18:30:27,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:27,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:27,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-29 18:30:27,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726904257] [2020-11-29 18:30:27,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-29 18:30:27,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:27,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-29 18:30:27,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-11-29 18:30:27,709 INFO L87 Difference]: Start difference. First operand 717 states and 827 transitions. Second operand 21 states. [2020-11-29 18:30:28,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:28,022 INFO L93 Difference]: Finished difference Result 1397 states and 1622 transitions. [2020-11-29 18:30:28,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-29 18:30:28,023 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 112 [2020-11-29 18:30:28,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:28,031 INFO L225 Difference]: With dead ends: 1397 [2020-11-29 18:30:28,031 INFO L226 Difference]: Without dead ends: 1396 [2020-11-29 18:30:28,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-11-29 18:30:28,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2020-11-29 18:30:28,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 756. [2020-11-29 18:30:28,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2020-11-29 18:30:28,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 873 transitions. [2020-11-29 18:30:28,075 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 873 transitions. Word has length 112 [2020-11-29 18:30:28,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:28,075 INFO L481 AbstractCegarLoop]: Abstraction has 756 states and 873 transitions. [2020-11-29 18:30:28,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-29 18:30:28,075 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 873 transitions. [2020-11-29 18:30:28,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-11-29 18:30:28,077 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:28,077 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1] [2020-11-29 18:30:28,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-11-29 18:30:28,301 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:28,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:28,301 INFO L82 PathProgramCache]: Analyzing trace with hash -138078458, now seen corresponding path program 18 times [2020-11-29 18:30:28,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:28,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732690543] [2020-11-29 18:30:28,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:28,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732690543] [2020-11-29 18:30:28,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101564565] [2020-11-29 18:30:28,664 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:28,711 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2020-11-29 18:30:28,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:28,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 18:30:28,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:28,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:28,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-11-29 18:30:28,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732783438] [2020-11-29 18:30:28,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-29 18:30:28,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:28,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-29 18:30:28,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-11-29 18:30:28,755 INFO L87 Difference]: Start difference. First operand 756 states and 873 transitions. Second operand 22 states. [2020-11-29 18:30:29,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:29,109 INFO L93 Difference]: Finished difference Result 1477 states and 1716 transitions. [2020-11-29 18:30:29,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-29 18:30:29,110 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 118 [2020-11-29 18:30:29,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:29,118 INFO L225 Difference]: With dead ends: 1477 [2020-11-29 18:30:29,118 INFO L226 Difference]: Without dead ends: 1476 [2020-11-29 18:30:29,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-11-29 18:30:29,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2020-11-29 18:30:29,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 795. [2020-11-29 18:30:29,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-11-29 18:30:29,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 919 transitions. [2020-11-29 18:30:29,155 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 919 transitions. Word has length 118 [2020-11-29 18:30:29,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:29,155 INFO L481 AbstractCegarLoop]: Abstraction has 795 states and 919 transitions. [2020-11-29 18:30:29,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-29 18:30:29,156 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 919 transitions. [2020-11-29 18:30:29,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-11-29 18:30:29,157 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:29,158 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1] [2020-11-29 18:30:29,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:29,372 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:29,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:29,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1876878081, now seen corresponding path program 19 times [2020-11-29 18:30:29,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:29,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460879876] [2020-11-29 18:30:29,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:29,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460879876] [2020-11-29 18:30:29,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794565199] [2020-11-29 18:30:29,803 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:29,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 18:30:29,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:29,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:29,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:29,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-11-29 18:30:29,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220946738] [2020-11-29 18:30:29,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-29 18:30:29,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:29,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-29 18:30:29,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-11-29 18:30:29,905 INFO L87 Difference]: Start difference. First operand 795 states and 919 transitions. Second operand 23 states. [2020-11-29 18:30:30,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:30,256 INFO L93 Difference]: Finished difference Result 1557 states and 1810 transitions. [2020-11-29 18:30:30,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-29 18:30:30,256 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 124 [2020-11-29 18:30:30,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:30,265 INFO L225 Difference]: With dead ends: 1557 [2020-11-29 18:30:30,265 INFO L226 Difference]: Without dead ends: 1556 [2020-11-29 18:30:30,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-11-29 18:30:30,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2020-11-29 18:30:30,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 834. [2020-11-29 18:30:30,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2020-11-29 18:30:30,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 965 transitions. [2020-11-29 18:30:30,298 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 965 transitions. Word has length 124 [2020-11-29 18:30:30,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:30,299 INFO L481 AbstractCegarLoop]: Abstraction has 834 states and 965 transitions. [2020-11-29 18:30:30,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-29 18:30:30,299 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 965 transitions. [2020-11-29 18:30:30,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-29 18:30:30,301 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:30,301 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 20, 15, 15, 15, 6, 6, 6, 1, 1] [2020-11-29 18:30:30,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-11-29 18:30:30,524 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:30,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:30,525 INFO L82 PathProgramCache]: Analyzing trace with hash -637299836, now seen corresponding path program 10 times [2020-11-29 18:30:30,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:30,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834780581] [2020-11-29 18:30:30,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:30,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 325 proven. 660 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-11-29 18:30:30,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834780581] [2020-11-29 18:30:30,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837862753] [2020-11-29 18:30:30,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:30,824 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:30:30,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:30,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 18:30:30,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 325 proven. 660 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-11-29 18:30:30,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:30,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-11-29 18:30:30,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854078801] [2020-11-29 18:30:30,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-29 18:30:30,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:30,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-29 18:30:30,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-11-29 18:30:30,866 INFO L87 Difference]: Start difference. First operand 834 states and 965 transitions. Second operand 18 states. [2020-11-29 18:30:31,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:31,015 INFO L93 Difference]: Finished difference Result 1591 states and 1854 transitions. [2020-11-29 18:30:31,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-29 18:30:31,016 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 126 [2020-11-29 18:30:31,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:31,021 INFO L225 Difference]: With dead ends: 1591 [2020-11-29 18:30:31,021 INFO L226 Difference]: Without dead ends: 844 [2020-11-29 18:30:31,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-11-29 18:30:31,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-11-29 18:30:31,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 840. [2020-11-29 18:30:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 840 states. [2020-11-29 18:30:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 971 transitions. [2020-11-29 18:30:31,046 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 971 transitions. Word has length 126 [2020-11-29 18:30:31,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:31,047 INFO L481 AbstractCegarLoop]: Abstraction has 840 states and 971 transitions. [2020-11-29 18:30:31,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-29 18:30:31,047 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 971 transitions. [2020-11-29 18:30:31,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-11-29 18:30:31,048 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:31,049 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1] [2020-11-29 18:30:31,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:31,264 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:31,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:31,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1721041976, now seen corresponding path program 20 times [2020-11-29 18:30:31,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:31,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085888236] [2020-11-29 18:30:31,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:31,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085888236] [2020-11-29 18:30:31,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911767087] [2020-11-29 18:30:31,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/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 [2020-11-29 18:30:31,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:30:31,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:31,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-29 18:30:31,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:31,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:31,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-29 18:30:31,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114394808] [2020-11-29 18:30:31,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-29 18:30:31,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:31,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-29 18:30:31,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-11-29 18:30:31,766 INFO L87 Difference]: Start difference. First operand 840 states and 971 transitions. Second operand 24 states. [2020-11-29 18:30:32,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:32,127 INFO L93 Difference]: Finished difference Result 1643 states and 1910 transitions. [2020-11-29 18:30:32,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-29 18:30:32,128 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 130 [2020-11-29 18:30:32,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:32,136 INFO L225 Difference]: With dead ends: 1643 [2020-11-29 18:30:32,136 INFO L226 Difference]: Without dead ends: 1642 [2020-11-29 18:30:32,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-11-29 18:30:32,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2020-11-29 18:30:32,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 879. [2020-11-29 18:30:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-11-29 18:30:32,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1017 transitions. [2020-11-29 18:30:32,165 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1017 transitions. Word has length 130 [2020-11-29 18:30:32,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:32,166 INFO L481 AbstractCegarLoop]: Abstraction has 879 states and 1017 transitions. [2020-11-29 18:30:32,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-29 18:30:32,166 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1017 transitions. [2020-11-29 18:30:32,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-11-29 18:30:32,168 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:32,168 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 21, 16, 16, 16, 6, 6, 6, 1, 1] [2020-11-29 18:30:32,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-11-29 18:30:32,396 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:32,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:32,397 INFO L82 PathProgramCache]: Analyzing trace with hash -484798339, now seen corresponding path program 11 times [2020-11-29 18:30:32,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:32,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380504847] [2020-11-29 18:30:32,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 346 proven. 752 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-11-29 18:30:32,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380504847] [2020-11-29 18:30:32,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817459825] [2020-11-29 18:30:32,640 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/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 [2020-11-29 18:30:32,684 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-11-29 18:30:32,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:32,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 18:30:32,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:32,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 346 proven. 752 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-11-29 18:30:32,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:32,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-11-29 18:30:32,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794662009] [2020-11-29 18:30:32,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-29 18:30:32,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:32,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-29 18:30:32,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-11-29 18:30:32,736 INFO L87 Difference]: Start difference. First operand 879 states and 1017 transitions. Second operand 19 states. [2020-11-29 18:30:32,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:32,832 INFO L93 Difference]: Finished difference Result 1675 states and 1952 transitions. [2020-11-29 18:30:32,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 18:30:32,833 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 132 [2020-11-29 18:30:32,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:32,838 INFO L225 Difference]: With dead ends: 1675 [2020-11-29 18:30:32,838 INFO L226 Difference]: Without dead ends: 889 [2020-11-29 18:30:32,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-11-29 18:30:32,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-11-29 18:30:32,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 885. [2020-11-29 18:30:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2020-11-29 18:30:32,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1023 transitions. [2020-11-29 18:30:32,866 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1023 transitions. Word has length 132 [2020-11-29 18:30:32,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:32,866 INFO L481 AbstractCegarLoop]: Abstraction has 885 states and 1023 transitions. [2020-11-29 18:30:32,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-29 18:30:32,866 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1023 transitions. [2020-11-29 18:30:32,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-29 18:30:32,868 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:32,868 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1] [2020-11-29 18:30:33,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-29 18:30:33,084 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:33,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:33,085 INFO L82 PathProgramCache]: Analyzing trace with hash -511517519, now seen corresponding path program 21 times [2020-11-29 18:30:33,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:33,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652290694] [2020-11-29 18:30:33,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:33,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652290694] [2020-11-29 18:30:33,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907799227] [2020-11-29 18:30:33,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/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 [2020-11-29 18:30:33,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2020-11-29 18:30:33,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:33,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-29 18:30:33,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:33,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:33,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-11-29 18:30:33,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706220234] [2020-11-29 18:30:33,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-29 18:30:33,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:33,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-29 18:30:33,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-11-29 18:30:33,870 INFO L87 Difference]: Start difference. First operand 885 states and 1023 transitions. Second operand 25 states. [2020-11-29 18:30:34,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:34,276 INFO L93 Difference]: Finished difference Result 1729 states and 2010 transitions. [2020-11-29 18:30:34,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-29 18:30:34,277 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 136 [2020-11-29 18:30:34,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:34,284 INFO L225 Difference]: With dead ends: 1729 [2020-11-29 18:30:34,284 INFO L226 Difference]: Without dead ends: 1728 [2020-11-29 18:30:34,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-11-29 18:30:34,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2020-11-29 18:30:34,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 924. [2020-11-29 18:30:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-11-29 18:30:34,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1069 transitions. [2020-11-29 18:30:34,317 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1069 transitions. Word has length 136 [2020-11-29 18:30:34,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:34,317 INFO L481 AbstractCegarLoop]: Abstraction has 924 states and 1069 transitions. [2020-11-29 18:30:34,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-29 18:30:34,318 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1069 transitions. [2020-11-29 18:30:34,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-11-29 18:30:34,319 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:34,320 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 17, 17, 17, 6, 6, 6, 1, 1] [2020-11-29 18:30:34,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-11-29 18:30:34,547 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:34,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:34,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1509174966, now seen corresponding path program 12 times [2020-11-29 18:30:34,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:34,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998189680] [2020-11-29 18:30:34,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 367 proven. 850 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-11-29 18:30:34,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998189680] [2020-11-29 18:30:34,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063146263] [2020-11-29 18:30:34,920 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/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 [2020-11-29 18:30:34,979 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-29 18:30:34,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:34,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 18:30:34,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:35,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 444 proven. 96 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2020-11-29 18:30:35,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:35,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 8] total 27 [2020-11-29 18:30:35,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123099027] [2020-11-29 18:30:35,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-29 18:30:35,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:35,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-29 18:30:35,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-11-29 18:30:35,275 INFO L87 Difference]: Start difference. First operand 924 states and 1069 transitions. Second operand 27 states. [2020-11-29 18:30:35,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:35,430 INFO L93 Difference]: Finished difference Result 1883 states and 2210 transitions. [2020-11-29 18:30:35,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-29 18:30:35,430 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 138 [2020-11-29 18:30:35,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:35,436 INFO L225 Difference]: With dead ends: 1883 [2020-11-29 18:30:35,436 INFO L226 Difference]: Without dead ends: 1058 [2020-11-29 18:30:35,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-11-29 18:30:35,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2020-11-29 18:30:35,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1041. [2020-11-29 18:30:35,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2020-11-29 18:30:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1203 transitions. [2020-11-29 18:30:35,463 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1203 transitions. Word has length 138 [2020-11-29 18:30:35,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:35,463 INFO L481 AbstractCegarLoop]: Abstraction has 1041 states and 1203 transitions. [2020-11-29 18:30:35,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-11-29 18:30:35,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1203 transitions. [2020-11-29 18:30:35,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-11-29 18:30:35,465 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:35,466 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1] [2020-11-29 18:30:35,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-11-29 18:30:35,688 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:35,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:35,689 INFO L82 PathProgramCache]: Analyzing trace with hash -109005206, now seen corresponding path program 22 times [2020-11-29 18:30:35,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:35,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532839542] [2020-11-29 18:30:35,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:36,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532839542] [2020-11-29 18:30:36,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084256144] [2020-11-29 18:30:36,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/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 [2020-11-29 18:30:36,299 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:30:36,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:36,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-29 18:30:36,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:36,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:36,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:36,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-11-29 18:30:36,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872690598] [2020-11-29 18:30:36,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-29 18:30:36,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:36,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-29 18:30:36,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-11-29 18:30:36,343 INFO L87 Difference]: Start difference. First operand 1041 states and 1203 transitions. Second operand 26 states. [2020-11-29 18:30:36,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:36,751 INFO L93 Difference]: Finished difference Result 2034 states and 2364 transitions. [2020-11-29 18:30:36,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-29 18:30:36,751 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 142 [2020-11-29 18:30:36,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:36,763 INFO L225 Difference]: With dead ends: 2034 [2020-11-29 18:30:36,763 INFO L226 Difference]: Without dead ends: 2033 [2020-11-29 18:30:36,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-11-29 18:30:36,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2020-11-29 18:30:36,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 1086. [2020-11-29 18:30:36,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1086 states. [2020-11-29 18:30:36,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1256 transitions. [2020-11-29 18:30:36,797 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1256 transitions. Word has length 142 [2020-11-29 18:30:36,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:36,797 INFO L481 AbstractCegarLoop]: Abstraction has 1086 states and 1256 transitions. [2020-11-29 18:30:36,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-11-29 18:30:36,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1256 transitions. [2020-11-29 18:30:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-29 18:30:36,799 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:36,800 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1] [2020-11-29 18:30:37,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-11-29 18:30:37,028 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:37,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:37,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1034378909, now seen corresponding path program 23 times [2020-11-29 18:30:37,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:37,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276720398] [2020-11-29 18:30:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:37,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276720398] [2020-11-29 18:30:37,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132600484] [2020-11-29 18:30:37,580 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/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 [2020-11-29 18:30:37,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2020-11-29 18:30:37,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:37,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-29 18:30:37,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:37,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:37,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-29 18:30:37,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751774643] [2020-11-29 18:30:37,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-29 18:30:37,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:37,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-29 18:30:37,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-11-29 18:30:37,737 INFO L87 Difference]: Start difference. First operand 1086 states and 1256 transitions. Second operand 27 states. [2020-11-29 18:30:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:38,158 INFO L93 Difference]: Finished difference Result 2126 states and 2472 transitions. [2020-11-29 18:30:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-29 18:30:38,159 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 148 [2020-11-29 18:30:38,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:38,171 INFO L225 Difference]: With dead ends: 2126 [2020-11-29 18:30:38,171 INFO L226 Difference]: Without dead ends: 2125 [2020-11-29 18:30:38,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-11-29 18:30:38,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2020-11-29 18:30:38,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 1131. [2020-11-29 18:30:38,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1131 states. [2020-11-29 18:30:38,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1309 transitions. [2020-11-29 18:30:38,205 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1309 transitions. Word has length 148 [2020-11-29 18:30:38,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:38,205 INFO L481 AbstractCegarLoop]: Abstraction has 1131 states and 1309 transitions. [2020-11-29 18:30:38,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-11-29 18:30:38,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1309 transitions. [2020-11-29 18:30:38,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-11-29 18:30:38,207 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:38,207 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1] [2020-11-29 18:30:38,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-11-29 18:30:38,431 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:38,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:38,432 INFO L82 PathProgramCache]: Analyzing trace with hash 872983964, now seen corresponding path program 24 times [2020-11-29 18:30:38,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:38,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214636430] [2020-11-29 18:30:38,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:39,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:39,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214636430] [2020-11-29 18:30:39,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883919680] [2020-11-29 18:30:39,128 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/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 [2020-11-29 18:30:39,191 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2020-11-29 18:30:39,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:39,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-29 18:30:39,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:39,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:39,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-11-29 18:30:39,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434925200] [2020-11-29 18:30:39,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-29 18:30:39,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:39,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-29 18:30:39,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-11-29 18:30:39,249 INFO L87 Difference]: Start difference. First operand 1131 states and 1309 transitions. Second operand 28 states. [2020-11-29 18:30:39,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:39,567 INFO L93 Difference]: Finished difference Result 2218 states and 2580 transitions. [2020-11-29 18:30:39,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-29 18:30:39,568 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-11-29 18:30:39,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:39,580 INFO L225 Difference]: With dead ends: 2218 [2020-11-29 18:30:39,580 INFO L226 Difference]: Without dead ends: 2217 [2020-11-29 18:30:39,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-11-29 18:30:39,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2217 states. [2020-11-29 18:30:39,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2217 to 1176. [2020-11-29 18:30:39,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1176 states. [2020-11-29 18:30:39,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1362 transitions. [2020-11-29 18:30:39,615 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1362 transitions. Word has length 154 [2020-11-29 18:30:39,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:39,615 INFO L481 AbstractCegarLoop]: Abstraction has 1176 states and 1362 transitions. [2020-11-29 18:30:39,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-29 18:30:39,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1362 transitions. [2020-11-29 18:30:39,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-29 18:30:39,617 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:39,618 INFO L422 BasicCegarLoop]: trace histogram [26, 25, 25, 19, 19, 19, 7, 7, 7, 1, 1] [2020-11-29 18:30:39,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-11-29 18:30:39,832 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:39,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:39,833 INFO L82 PathProgramCache]: Analyzing trace with hash 720538971, now seen corresponding path program 13 times [2020-11-29 18:30:39,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:39,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258961121] [2020-11-29 18:30:39,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:40,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1659 backedges. 487 proven. 1064 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-11-29 18:30:40,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258961121] [2020-11-29 18:30:40,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535295046] [2020-11-29 18:30:40,217 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:40,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 18:30:40,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1659 backedges. 487 proven. 1064 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-11-29 18:30:40,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:40,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-11-29 18:30:40,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567979660] [2020-11-29 18:30:40,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-29 18:30:40,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:40,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-29 18:30:40,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-11-29 18:30:40,316 INFO L87 Difference]: Start difference. First operand 1176 states and 1362 transitions. Second operand 22 states. [2020-11-29 18:30:40,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:40,419 INFO L93 Difference]: Finished difference Result 2251 states and 2624 transitions. [2020-11-29 18:30:40,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-29 18:30:40,420 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 156 [2020-11-29 18:30:40,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:40,426 INFO L225 Difference]: With dead ends: 2251 [2020-11-29 18:30:40,427 INFO L226 Difference]: Without dead ends: 1186 [2020-11-29 18:30:40,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-11-29 18:30:40,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2020-11-29 18:30:40,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1182. [2020-11-29 18:30:40,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2020-11-29 18:30:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1368 transitions. [2020-11-29 18:30:40,457 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1368 transitions. Word has length 156 [2020-11-29 18:30:40,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:40,458 INFO L481 AbstractCegarLoop]: Abstraction has 1182 states and 1368 transitions. [2020-11-29 18:30:40,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-29 18:30:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1368 transitions. [2020-11-29 18:30:40,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-11-29 18:30:40,460 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:40,460 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 1, 1] [2020-11-29 18:30:40,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:40,670 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:40,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:40,670 INFO L82 PathProgramCache]: Analyzing trace with hash 868412181, now seen corresponding path program 25 times [2020-11-29 18:30:40,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:40,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085732874] [2020-11-29 18:30:40,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:41,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085732874] [2020-11-29 18:30:41,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707400097] [2020-11-29 18:30:41,272 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:41,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-29 18:30:41,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:41,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:41,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:41,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-11-29 18:30:41,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21001794] [2020-11-29 18:30:41,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-29 18:30:41,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:41,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-29 18:30:41,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-11-29 18:30:41,394 INFO L87 Difference]: Start difference. First operand 1182 states and 1368 transitions. Second operand 29 states. [2020-11-29 18:30:41,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:41,815 INFO L93 Difference]: Finished difference Result 2316 states and 2694 transitions. [2020-11-29 18:30:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-29 18:30:41,816 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 160 [2020-11-29 18:30:41,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:41,825 INFO L225 Difference]: With dead ends: 2316 [2020-11-29 18:30:41,825 INFO L226 Difference]: Without dead ends: 2315 [2020-11-29 18:30:41,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-11-29 18:30:41,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2020-11-29 18:30:41,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 1227. [2020-11-29 18:30:41,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2020-11-29 18:30:41,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1421 transitions. [2020-11-29 18:30:41,861 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1421 transitions. Word has length 160 [2020-11-29 18:30:41,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:41,861 INFO L481 AbstractCegarLoop]: Abstraction has 1227 states and 1421 transitions. [2020-11-29 18:30:41,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-11-29 18:30:41,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1421 transitions. [2020-11-29 18:30:41,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-11-29 18:30:41,863 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:41,863 INFO L422 BasicCegarLoop]: trace histogram [27, 26, 26, 20, 20, 20, 7, 7, 7, 1, 1] [2020-11-29 18:30:42,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-11-29 18:30:42,084 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:42,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:42,085 INFO L82 PathProgramCache]: Analyzing trace with hash 622022804, now seen corresponding path program 14 times [2020-11-29 18:30:42,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:42,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517238397] [2020-11-29 18:30:42,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 512 proven. 1180 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-11-29 18:30:42,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517238397] [2020-11-29 18:30:42,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858272549] [2020-11-29 18:30:42,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:42,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:30:42,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:42,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 18:30:42,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 512 proven. 1180 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-11-29 18:30:42,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:42,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-11-29 18:30:42,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548923770] [2020-11-29 18:30:42,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-29 18:30:42,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:42,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-29 18:30:42,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-11-29 18:30:42,606 INFO L87 Difference]: Start difference. First operand 1227 states and 1421 transitions. Second operand 23 states. [2020-11-29 18:30:42,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:42,718 INFO L93 Difference]: Finished difference Result 2347 states and 2736 transitions. [2020-11-29 18:30:42,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-29 18:30:42,718 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 162 [2020-11-29 18:30:42,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:42,722 INFO L225 Difference]: With dead ends: 2347 [2020-11-29 18:30:42,722 INFO L226 Difference]: Without dead ends: 1237 [2020-11-29 18:30:42,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-11-29 18:30:42,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2020-11-29 18:30:42,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1233. [2020-11-29 18:30:42,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1233 states. [2020-11-29 18:30:42,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1427 transitions. [2020-11-29 18:30:42,754 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1427 transitions. Word has length 162 [2020-11-29 18:30:42,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:42,754 INFO L481 AbstractCegarLoop]: Abstraction has 1233 states and 1427 transitions. [2020-11-29 18:30:42,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-29 18:30:42,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1427 transitions. [2020-11-29 18:30:42,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-11-29 18:30:42,756 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:42,756 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1] [2020-11-29 18:30:42,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:42,969 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:42,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:42,970 INFO L82 PathProgramCache]: Analyzing trace with hash -588420658, now seen corresponding path program 26 times [2020-11-29 18:30:42,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:42,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709139636] [2020-11-29 18:30:42,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:43,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709139636] [2020-11-29 18:30:43,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850117071] [2020-11-29 18:30:43,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:43,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:30:43,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:43,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-29 18:30:43,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:43,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:43,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:43,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2020-11-29 18:30:43,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797104436] [2020-11-29 18:30:43,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-29 18:30:43,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:43,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-29 18:30:43,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-11-29 18:30:43,668 INFO L87 Difference]: Start difference. First operand 1233 states and 1427 transitions. Second operand 30 states. [2020-11-29 18:30:43,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:43,955 INFO L93 Difference]: Finished difference Result 2414 states and 2808 transitions. [2020-11-29 18:30:43,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-29 18:30:43,955 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 166 [2020-11-29 18:30:43,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:43,960 INFO L225 Difference]: With dead ends: 2414 [2020-11-29 18:30:43,961 INFO L226 Difference]: Without dead ends: 2413 [2020-11-29 18:30:43,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-11-29 18:30:43,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2020-11-29 18:30:43,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1278. [2020-11-29 18:30:43,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1278 states. [2020-11-29 18:30:43,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1480 transitions. [2020-11-29 18:30:43,989 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1480 transitions. Word has length 166 [2020-11-29 18:30:43,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:43,989 INFO L481 AbstractCegarLoop]: Abstraction has 1278 states and 1480 transitions. [2020-11-29 18:30:43,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-29 18:30:43,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1480 transitions. [2020-11-29 18:30:43,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-11-29 18:30:43,991 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:43,991 INFO L422 BasicCegarLoop]: trace histogram [28, 27, 27, 21, 21, 21, 7, 7, 7, 1, 1] [2020-11-29 18:30:44,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-11-29 18:30:44,191 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:44,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:44,192 INFO L82 PathProgramCache]: Analyzing trace with hash 765003021, now seen corresponding path program 15 times [2020-11-29 18:30:44,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:44,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062370945] [2020-11-29 18:30:44,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:44,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1947 backedges. 537 proven. 1302 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-11-29 18:30:44,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062370945] [2020-11-29 18:30:44,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331006257] [2020-11-29 18:30:44,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:44,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-11-29 18:30:44,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:44,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 18:30:44,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1947 backedges. 719 proven. 164 refuted. 0 times theorem prover too weak. 1064 trivial. 0 not checked. [2020-11-29 18:30:44,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:44,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 10] total 33 [2020-11-29 18:30:44,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087201041] [2020-11-29 18:30:44,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-29 18:30:44,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:44,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-29 18:30:44,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-11-29 18:30:44,994 INFO L87 Difference]: Start difference. First operand 1278 states and 1480 transitions. Second operand 33 states. [2020-11-29 18:30:45,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:45,190 INFO L93 Difference]: Finished difference Result 2717 states and 3207 transitions. [2020-11-29 18:30:45,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-29 18:30:45,191 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 168 [2020-11-29 18:30:45,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:45,193 INFO L225 Difference]: With dead ends: 2717 [2020-11-29 18:30:45,194 INFO L226 Difference]: Without dead ends: 1562 [2020-11-29 18:30:45,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-11-29 18:30:45,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2020-11-29 18:30:45,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1542. [2020-11-29 18:30:45,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2020-11-29 18:30:45,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 1785 transitions. [2020-11-29 18:30:45,233 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 1785 transitions. Word has length 168 [2020-11-29 18:30:45,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:45,234 INFO L481 AbstractCegarLoop]: Abstraction has 1542 states and 1785 transitions. [2020-11-29 18:30:45,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-11-29 18:30:45,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 1785 transitions. [2020-11-29 18:30:45,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-11-29 18:30:45,235 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:45,236 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 1, 1] [2020-11-29 18:30:45,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:45,452 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:45,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:45,453 INFO L82 PathProgramCache]: Analyzing trace with hash 170015175, now seen corresponding path program 27 times [2020-11-29 18:30:45,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:45,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094165028] [2020-11-29 18:30:45,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:46,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:46,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094165028] [2020-11-29 18:30:46,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745694264] [2020-11-29 18:30:46,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:46,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2020-11-29 18:30:46,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:46,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-29 18:30:46,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:46,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:46,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2020-11-29 18:30:46,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665774902] [2020-11-29 18:30:46,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-29 18:30:46,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:46,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-29 18:30:46,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-11-29 18:30:46,347 INFO L87 Difference]: Start difference. First operand 1542 states and 1785 transitions. Second operand 31 states. [2020-11-29 18:30:46,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:46,757 INFO L93 Difference]: Finished difference Result 3028 states and 3522 transitions. [2020-11-29 18:30:46,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-29 18:30:46,757 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 172 [2020-11-29 18:30:46,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:46,765 INFO L225 Difference]: With dead ends: 3028 [2020-11-29 18:30:46,766 INFO L226 Difference]: Without dead ends: 3027 [2020-11-29 18:30:46,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-11-29 18:30:46,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3027 states. [2020-11-29 18:30:46,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3027 to 1599. [2020-11-29 18:30:46,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1599 states. [2020-11-29 18:30:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 1852 transitions. [2020-11-29 18:30:46,811 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 1852 transitions. Word has length 172 [2020-11-29 18:30:46,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:46,811 INFO L481 AbstractCegarLoop]: Abstraction has 1599 states and 1852 transitions. [2020-11-29 18:30:46,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-11-29 18:30:46,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 1852 transitions. [2020-11-29 18:30:46,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-11-29 18:30:46,813 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:46,813 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 1, 1] [2020-11-29 18:30:47,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-11-29 18:30:47,028 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:47,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:47,029 INFO L82 PathProgramCache]: Analyzing trace with hash 506424064, now seen corresponding path program 28 times [2020-11-29 18:30:47,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:47,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70312725] [2020-11-29 18:30:47,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:47,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:47,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70312725] [2020-11-29 18:30:47,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842298475] [2020-11-29 18:30:47,624 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:47,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:30:47,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:47,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-29 18:30:47,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:47,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:47,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:47,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2020-11-29 18:30:47,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588206385] [2020-11-29 18:30:47,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-29 18:30:47,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:47,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-29 18:30:47,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-11-29 18:30:47,779 INFO L87 Difference]: Start difference. First operand 1599 states and 1852 transitions. Second operand 32 states. [2020-11-29 18:30:48,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:48,217 INFO L93 Difference]: Finished difference Result 3144 states and 3658 transitions. [2020-11-29 18:30:48,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-29 18:30:48,217 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 178 [2020-11-29 18:30:48,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:48,222 INFO L225 Difference]: With dead ends: 3144 [2020-11-29 18:30:48,222 INFO L226 Difference]: Without dead ends: 3143 [2020-11-29 18:30:48,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-11-29 18:30:48,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2020-11-29 18:30:48,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 1656. [2020-11-29 18:30:48,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1656 states. [2020-11-29 18:30:48,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 1919 transitions. [2020-11-29 18:30:48,268 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 1919 transitions. Word has length 178 [2020-11-29 18:30:48,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:48,268 INFO L481 AbstractCegarLoop]: Abstraction has 1656 states and 1919 transitions. [2020-11-29 18:30:48,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-11-29 18:30:48,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 1919 transitions. [2020-11-29 18:30:48,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-11-29 18:30:48,270 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:48,270 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1] [2020-11-29 18:30:48,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-11-29 18:30:48,484 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:48,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:48,485 INFO L82 PathProgramCache]: Analyzing trace with hash 219614585, now seen corresponding path program 29 times [2020-11-29 18:30:48,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:48,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681589356] [2020-11-29 18:30:48,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:49,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:49,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681589356] [2020-11-29 18:30:49,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259193195] [2020-11-29 18:30:49,142 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:49,204 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2020-11-29 18:30:49,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:49,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-29 18:30:49,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:49,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:49,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:49,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2020-11-29 18:30:49,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248908501] [2020-11-29 18:30:49,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-29 18:30:49,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:49,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-29 18:30:49,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-11-29 18:30:49,270 INFO L87 Difference]: Start difference. First operand 1656 states and 1919 transitions. Second operand 33 states. [2020-11-29 18:30:49,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:49,602 INFO L93 Difference]: Finished difference Result 3260 states and 3794 transitions. [2020-11-29 18:30:49,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-29 18:30:49,603 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 184 [2020-11-29 18:30:49,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:49,609 INFO L225 Difference]: With dead ends: 3260 [2020-11-29 18:30:49,609 INFO L226 Difference]: Without dead ends: 3259 [2020-11-29 18:30:49,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-11-29 18:30:49,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3259 states. [2020-11-29 18:30:49,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3259 to 1713. [2020-11-29 18:30:49,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1713 states. [2020-11-29 18:30:49,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 1986 transitions. [2020-11-29 18:30:49,650 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 1986 transitions. Word has length 184 [2020-11-29 18:30:49,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:49,651 INFO L481 AbstractCegarLoop]: Abstraction has 1713 states and 1986 transitions. [2020-11-29 18:30:49,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-11-29 18:30:49,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 1986 transitions. [2020-11-29 18:30:49,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-11-29 18:30:49,653 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:49,653 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1] [2020-11-29 18:30:49,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-11-29 18:30:49,868 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:49,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:49,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1525731022, now seen corresponding path program 30 times [2020-11-29 18:30:49,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:49,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307603214] [2020-11-29 18:30:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:50,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307603214] [2020-11-29 18:30:50,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741791872] [2020-11-29 18:30:50,647 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:50,714 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2020-11-29 18:30:50,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:50,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-29 18:30:50,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:50,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:50,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:50,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2020-11-29 18:30:50,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720513227] [2020-11-29 18:30:50,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-11-29 18:30:50,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:50,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-11-29 18:30:50,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-11-29 18:30:50,800 INFO L87 Difference]: Start difference. First operand 1713 states and 1986 transitions. Second operand 34 states. [2020-11-29 18:30:51,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:51,132 INFO L93 Difference]: Finished difference Result 3376 states and 3930 transitions. [2020-11-29 18:30:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-29 18:30:51,133 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 190 [2020-11-29 18:30:51,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:51,139 INFO L225 Difference]: With dead ends: 3376 [2020-11-29 18:30:51,140 INFO L226 Difference]: Without dead ends: 3375 [2020-11-29 18:30:51,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-11-29 18:30:51,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2020-11-29 18:30:51,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 1770. [2020-11-29 18:30:51,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1770 states. [2020-11-29 18:30:51,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2053 transitions. [2020-11-29 18:30:51,191 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2053 transitions. Word has length 190 [2020-11-29 18:30:51,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:51,191 INFO L481 AbstractCegarLoop]: Abstraction has 1770 states and 2053 transitions. [2020-11-29 18:30:51,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-11-29 18:30:51,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2053 transitions. [2020-11-29 18:30:51,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-11-29 18:30:51,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:51,206 INFO L422 BasicCegarLoop]: trace histogram [32, 31, 31, 23, 23, 23, 9, 9, 9, 1, 1] [2020-11-29 18:30:51,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2020-11-29 18:30:51,432 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:51,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:51,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1356009957, now seen corresponding path program 16 times [2020-11-29 18:30:51,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:51,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563384721] [2020-11-29 18:30:51,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:51,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2531 backedges. 775 proven. 1564 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-11-29 18:30:51,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563384721] [2020-11-29 18:30:51,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777223529] [2020-11-29 18:30:51,969 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:52,025 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:30:52,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:52,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-29 18:30:52,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:52,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2531 backedges. 775 proven. 1564 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-11-29 18:30:52,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:52,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-11-29 18:30:52,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539195745] [2020-11-29 18:30:52,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-29 18:30:52,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:52,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-29 18:30:52,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-11-29 18:30:52,084 INFO L87 Difference]: Start difference. First operand 1770 states and 2053 transitions. Second operand 26 states. [2020-11-29 18:30:52,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:52,189 INFO L93 Difference]: Finished difference Result 3415 states and 3982 transitions. [2020-11-29 18:30:52,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-29 18:30:52,190 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 192 [2020-11-29 18:30:52,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:52,193 INFO L225 Difference]: With dead ends: 3415 [2020-11-29 18:30:52,193 INFO L226 Difference]: Without dead ends: 1780 [2020-11-29 18:30:52,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-11-29 18:30:52,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2020-11-29 18:30:52,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1776. [2020-11-29 18:30:52,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1776 states. [2020-11-29 18:30:52,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2059 transitions. [2020-11-29 18:30:52,235 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2059 transitions. Word has length 192 [2020-11-29 18:30:52,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:52,235 INFO L481 AbstractCegarLoop]: Abstraction has 1776 states and 2059 transitions. [2020-11-29 18:30:52,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-11-29 18:30:52,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2059 transitions. [2020-11-29 18:30:52,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-11-29 18:30:52,237 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:52,237 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 1, 1] [2020-11-29 18:30:52,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:52,452 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:52,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:52,453 INFO L82 PathProgramCache]: Analyzing trace with hash 394389035, now seen corresponding path program 31 times [2020-11-29 18:30:52,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:52,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491457538] [2020-11-29 18:30:52,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:53,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 3072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:53,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491457538] [2020-11-29 18:30:53,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150113545] [2020-11-29 18:30:53,403 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:53,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-29 18:30:53,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:53,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 3072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:53,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:53,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2020-11-29 18:30:53,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630389210] [2020-11-29 18:30:53,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-29 18:30:53,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:53,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-29 18:30:53,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-11-29 18:30:53,572 INFO L87 Difference]: Start difference. First operand 1776 states and 2059 transitions. Second operand 35 states. [2020-11-29 18:30:53,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:53,917 INFO L93 Difference]: Finished difference Result 3498 states and 4072 transitions. [2020-11-29 18:30:53,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-29 18:30:53,918 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 196 [2020-11-29 18:30:53,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:53,923 INFO L225 Difference]: With dead ends: 3498 [2020-11-29 18:30:53,924 INFO L226 Difference]: Without dead ends: 3497 [2020-11-29 18:30:53,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-11-29 18:30:53,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3497 states. [2020-11-29 18:30:53,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3497 to 1833. [2020-11-29 18:30:53,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1833 states. [2020-11-29 18:30:53,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2126 transitions. [2020-11-29 18:30:53,967 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2126 transitions. Word has length 196 [2020-11-29 18:30:53,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:53,968 INFO L481 AbstractCegarLoop]: Abstraction has 1833 states and 2126 transitions. [2020-11-29 18:30:53,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-11-29 18:30:53,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2126 transitions. [2020-11-29 18:30:53,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-11-29 18:30:53,970 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:53,970 INFO L422 BasicCegarLoop]: trace histogram [33, 32, 32, 24, 24, 24, 9, 9, 9, 1, 1] [2020-11-29 18:30:54,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:54,196 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:54,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:54,197 INFO L82 PathProgramCache]: Analyzing trace with hash -244552546, now seen corresponding path program 17 times [2020-11-29 18:30:54,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:54,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440218303] [2020-11-29 18:30:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:54,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 808 proven. 1704 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-11-29 18:30:54,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440218303] [2020-11-29 18:30:54,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480743666] [2020-11-29 18:30:54,773 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:54,892 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2020-11-29 18:30:54,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:54,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-29 18:30:54,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:54,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 808 proven. 1704 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-11-29 18:30:54,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:54,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-11-29 18:30:54,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326292870] [2020-11-29 18:30:54,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-29 18:30:54,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:54,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-29 18:30:54,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-11-29 18:30:54,966 INFO L87 Difference]: Start difference. First operand 1833 states and 2126 transitions. Second operand 27 states. [2020-11-29 18:30:55,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:55,085 INFO L93 Difference]: Finished difference Result 3535 states and 4122 transitions. [2020-11-29 18:30:55,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-29 18:30:55,086 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 198 [2020-11-29 18:30:55,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:55,088 INFO L225 Difference]: With dead ends: 3535 [2020-11-29 18:30:55,089 INFO L226 Difference]: Without dead ends: 1843 [2020-11-29 18:30:55,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-11-29 18:30:55,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2020-11-29 18:30:55,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1839. [2020-11-29 18:30:55,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1839 states. [2020-11-29 18:30:55,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2132 transitions. [2020-11-29 18:30:55,125 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2132 transitions. Word has length 198 [2020-11-29 18:30:55,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:55,125 INFO L481 AbstractCegarLoop]: Abstraction has 1839 states and 2132 transitions. [2020-11-29 18:30:55,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-11-29 18:30:55,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2132 transitions. [2020-11-29 18:30:55,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-11-29 18:30:55,126 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:55,127 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 1, 1] [2020-11-29 18:30:55,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-11-29 18:30:55,340 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:55,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:55,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1039319964, now seen corresponding path program 32 times [2020-11-29 18:30:55,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:55,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798868804] [2020-11-29 18:30:55,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:56,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798868804] [2020-11-29 18:30:56,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020443865] [2020-11-29 18:30:56,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:56,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:30:56,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:56,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-29 18:30:56,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:56,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:56,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2020-11-29 18:30:56,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562211331] [2020-11-29 18:30:56,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-29 18:30:56,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:56,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-29 18:30:56,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-11-29 18:30:56,333 INFO L87 Difference]: Start difference. First operand 1839 states and 2132 transitions. Second operand 36 states. [2020-11-29 18:30:56,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:56,711 INFO L93 Difference]: Finished difference Result 3620 states and 4214 transitions. [2020-11-29 18:30:56,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-29 18:30:56,711 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 202 [2020-11-29 18:30:56,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:56,722 INFO L225 Difference]: With dead ends: 3620 [2020-11-29 18:30:56,722 INFO L226 Difference]: Without dead ends: 3619 [2020-11-29 18:30:56,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-11-29 18:30:56,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3619 states. [2020-11-29 18:30:56,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3619 to 1896. [2020-11-29 18:30:56,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1896 states. [2020-11-29 18:30:56,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2199 transitions. [2020-11-29 18:30:56,769 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2199 transitions. Word has length 202 [2020-11-29 18:30:56,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:56,769 INFO L481 AbstractCegarLoop]: Abstraction has 1896 states and 2199 transitions. [2020-11-29 18:30:56,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-29 18:30:56,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2199 transitions. [2020-11-29 18:30:56,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-11-29 18:30:56,770 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:56,770 INFO L422 BasicCegarLoop]: trace histogram [34, 33, 33, 25, 25, 25, 9, 9, 9, 1, 1] [2020-11-29 18:30:56,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:56,971 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:56,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:56,971 INFO L82 PathProgramCache]: Analyzing trace with hash 645601431, now seen corresponding path program 18 times [2020-11-29 18:30:56,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:56,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238722715] [2020-11-29 18:30:56,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 841 proven. 1850 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-11-29 18:30:57,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238722715] [2020-11-29 18:30:57,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158864308] [2020-11-29 18:30:57,623 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:57,690 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-11-29 18:30:57,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:57,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 18:30:57,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 954 proven. 225 refuted. 0 times theorem prover too weak. 1704 trivial. 0 not checked. [2020-11-29 18:30:58,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:58,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 38 [2020-11-29 18:30:58,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654192080] [2020-11-29 18:30:58,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-11-29 18:30:58,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:58,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-11-29 18:30:58,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-11-29 18:30:58,118 INFO L87 Difference]: Start difference. First operand 1896 states and 2199 transitions. Second operand 38 states. [2020-11-29 18:30:58,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:30:58,443 INFO L93 Difference]: Finished difference Result 3835 states and 4494 transitions. [2020-11-29 18:30:58,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-29 18:30:58,443 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 204 [2020-11-29 18:30:58,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:30:58,446 INFO L225 Difference]: With dead ends: 3835 [2020-11-29 18:30:58,446 INFO L226 Difference]: Without dead ends: 2086 [2020-11-29 18:30:58,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-11-29 18:30:58,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2020-11-29 18:30:58,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 2061. [2020-11-29 18:30:58,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2061 states. [2020-11-29 18:30:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 2389 transitions. [2020-11-29 18:30:58,479 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 2389 transitions. Word has length 204 [2020-11-29 18:30:58,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:30:58,479 INFO L481 AbstractCegarLoop]: Abstraction has 2061 states and 2389 transitions. [2020-11-29 18:30:58,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-11-29 18:30:58,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 2389 transitions. [2020-11-29 18:30:58,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-11-29 18:30:58,481 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:30:58,481 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 1, 1] [2020-11-29 18:30:58,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-11-29 18:30:58,693 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:30:58,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:30:58,694 INFO L82 PathProgramCache]: Analyzing trace with hash 931349469, now seen corresponding path program 33 times [2020-11-29 18:30:58,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:30:58,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286150250] [2020-11-29 18:30:58,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:30:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:30:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:59,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286150250] [2020-11-29 18:30:59,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74705157] [2020-11-29 18:30:59,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:30:59,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2020-11-29 18:30:59,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:30:59,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-29 18:30:59,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:30:59,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:30:59,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:30:59,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2020-11-29 18:30:59,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271320384] [2020-11-29 18:30:59,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-29 18:30:59,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:30:59,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-29 18:30:59,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-11-29 18:30:59,668 INFO L87 Difference]: Start difference. First operand 2061 states and 2389 transitions. Second operand 37 states. [2020-11-29 18:31:00,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:00,082 INFO L93 Difference]: Finished difference Result 4057 states and 4722 transitions. [2020-11-29 18:31:00,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-29 18:31:00,082 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 208 [2020-11-29 18:31:00,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:00,085 INFO L225 Difference]: With dead ends: 4057 [2020-11-29 18:31:00,085 INFO L226 Difference]: Without dead ends: 4056 [2020-11-29 18:31:00,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-11-29 18:31:00,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4056 states. [2020-11-29 18:31:00,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4056 to 2124. [2020-11-29 18:31:00,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2124 states. [2020-11-29 18:31:00,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 2463 transitions. [2020-11-29 18:31:00,121 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 2463 transitions. Word has length 208 [2020-11-29 18:31:00,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:00,121 INFO L481 AbstractCegarLoop]: Abstraction has 2124 states and 2463 transitions. [2020-11-29 18:31:00,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-11-29 18:31:00,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 2463 transitions. [2020-11-29 18:31:00,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-11-29 18:31:00,122 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:00,123 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 1, 1] [2020-11-29 18:31:00,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-11-29 18:31:00,323 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:00,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:00,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1997927274, now seen corresponding path program 34 times [2020-11-29 18:31:00,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:00,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992879161] [2020-11-29 18:31:00,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:01,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992879161] [2020-11-29 18:31:01,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515703312] [2020-11-29 18:31:01,420 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:01,492 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:31:01,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:01,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-29 18:31:01,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:01,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:01,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2020-11-29 18:31:01,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467975893] [2020-11-29 18:31:01,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-11-29 18:31:01,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:01,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-11-29 18:31:01,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-11-29 18:31:01,563 INFO L87 Difference]: Start difference. First operand 2124 states and 2463 transitions. Second operand 38 states. [2020-11-29 18:31:01,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:01,992 INFO L93 Difference]: Finished difference Result 4185 states and 4872 transitions. [2020-11-29 18:31:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-29 18:31:01,993 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 214 [2020-11-29 18:31:01,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:02,000 INFO L225 Difference]: With dead ends: 4185 [2020-11-29 18:31:02,000 INFO L226 Difference]: Without dead ends: 4184 [2020-11-29 18:31:02,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-11-29 18:31:02,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4184 states. [2020-11-29 18:31:02,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4184 to 2187. [2020-11-29 18:31:02,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2187 states. [2020-11-29 18:31:02,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 2537 transitions. [2020-11-29 18:31:02,045 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 2537 transitions. Word has length 214 [2020-11-29 18:31:02,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:02,045 INFO L481 AbstractCegarLoop]: Abstraction has 2187 states and 2537 transitions. [2020-11-29 18:31:02,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-11-29 18:31:02,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 2537 transitions. [2020-11-29 18:31:02,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-11-29 18:31:02,046 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:02,046 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 1, 1] [2020-11-29 18:31:02,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-11-29 18:31:02,248 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:02,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:02,249 INFO L82 PathProgramCache]: Analyzing trace with hash -830757233, now seen corresponding path program 35 times [2020-11-29 18:31:02,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:02,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102065486] [2020-11-29 18:31:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:03,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3888 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:03,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102065486] [2020-11-29 18:31:03,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772155085] [2020-11-29 18:31:03,223 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:03,292 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2020-11-29 18:31:03,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:03,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 38 conjunts are in the unsatisfiable core [2020-11-29 18:31:03,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3888 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:03,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:03,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2020-11-29 18:31:03,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035221898] [2020-11-29 18:31:03,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-11-29 18:31:03,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:03,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-11-29 18:31:03,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-11-29 18:31:03,350 INFO L87 Difference]: Start difference. First operand 2187 states and 2537 transitions. Second operand 39 states. [2020-11-29 18:31:03,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:03,812 INFO L93 Difference]: Finished difference Result 4313 states and 5022 transitions. [2020-11-29 18:31:03,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-29 18:31:03,812 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 220 [2020-11-29 18:31:03,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:03,816 INFO L225 Difference]: With dead ends: 4313 [2020-11-29 18:31:03,816 INFO L226 Difference]: Without dead ends: 4312 [2020-11-29 18:31:03,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-11-29 18:31:03,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2020-11-29 18:31:03,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 2250. [2020-11-29 18:31:03,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2250 states. [2020-11-29 18:31:03,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 2611 transitions. [2020-11-29 18:31:03,863 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 2611 transitions. Word has length 220 [2020-11-29 18:31:03,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:03,864 INFO L481 AbstractCegarLoop]: Abstraction has 2250 states and 2611 transitions. [2020-11-29 18:31:03,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-11-29 18:31:03,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 2611 transitions. [2020-11-29 18:31:03,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-11-29 18:31:03,865 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:03,866 INFO L422 BasicCegarLoop]: trace histogram [37, 36, 36, 27, 27, 27, 10, 10, 10, 1, 1] [2020-11-29 18:31:04,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-11-29 18:31:04,068 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:04,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:04,069 INFO L82 PathProgramCache]: Analyzing trace with hash 121918972, now seen corresponding path program 19 times [2020-11-29 18:31:04,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:04,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838563639] [2020-11-29 18:31:04,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:04,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3420 backedges. 1017 proven. 2160 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-11-29 18:31:04,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838563639] [2020-11-29 18:31:04,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339196408] [2020-11-29 18:31:04,573 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:04,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-29 18:31:04,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3420 backedges. 1017 proven. 2160 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-11-29 18:31:04,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:04,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2020-11-29 18:31:04,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806734139] [2020-11-29 18:31:04,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-29 18:31:04,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:04,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-29 18:31:04,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-11-29 18:31:04,712 INFO L87 Difference]: Start difference. First operand 2250 states and 2611 transitions. Second operand 30 states. [2020-11-29 18:31:04,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:04,898 INFO L93 Difference]: Finished difference Result 4351 states and 5074 transitions. [2020-11-29 18:31:04,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-29 18:31:04,898 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 222 [2020-11-29 18:31:04,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:04,900 INFO L225 Difference]: With dead ends: 4351 [2020-11-29 18:31:04,900 INFO L226 Difference]: Without dead ends: 2260 [2020-11-29 18:31:04,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-11-29 18:31:04,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2020-11-29 18:31:04,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 2256. [2020-11-29 18:31:04,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2256 states. [2020-11-29 18:31:04,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 2617 transitions. [2020-11-29 18:31:04,943 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 2617 transitions. Word has length 222 [2020-11-29 18:31:04,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:04,943 INFO L481 AbstractCegarLoop]: Abstraction has 2256 states and 2617 transitions. [2020-11-29 18:31:04,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-29 18:31:04,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 2617 transitions. [2020-11-29 18:31:04,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-11-29 18:31:04,944 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:04,944 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 1, 1] [2020-11-29 18:31:05,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-11-29 18:31:05,146 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:05,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:05,146 INFO L82 PathProgramCache]: Analyzing trace with hash -257547832, now seen corresponding path program 36 times [2020-11-29 18:31:05,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:05,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94517314] [2020-11-29 18:31:05,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:05,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94517314] [2020-11-29 18:31:05,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561264567] [2020-11-29 18:31:05,944 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:06,023 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2020-11-29 18:31:06,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:06,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 39 conjunts are in the unsatisfiable core [2020-11-29 18:31:06,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:06,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:06,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2020-11-29 18:31:06,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704390065] [2020-11-29 18:31:06,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-11-29 18:31:06,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:06,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-11-29 18:31:06,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-11-29 18:31:06,109 INFO L87 Difference]: Start difference. First operand 2256 states and 2617 transitions. Second operand 40 states. [2020-11-29 18:31:06,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:06,669 INFO L93 Difference]: Finished difference Result 4447 states and 5178 transitions. [2020-11-29 18:31:06,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-29 18:31:06,669 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 226 [2020-11-29 18:31:06,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:06,672 INFO L225 Difference]: With dead ends: 4447 [2020-11-29 18:31:06,673 INFO L226 Difference]: Without dead ends: 4446 [2020-11-29 18:31:06,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-11-29 18:31:06,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4446 states. [2020-11-29 18:31:06,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4446 to 2319. [2020-11-29 18:31:06,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2319 states. [2020-11-29 18:31:06,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 2691 transitions. [2020-11-29 18:31:06,709 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 2691 transitions. Word has length 226 [2020-11-29 18:31:06,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:06,709 INFO L481 AbstractCegarLoop]: Abstraction has 2319 states and 2691 transitions. [2020-11-29 18:31:06,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-11-29 18:31:06,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 2691 transitions. [2020-11-29 18:31:06,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-11-29 18:31:06,710 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:06,710 INFO L422 BasicCegarLoop]: trace histogram [38, 37, 37, 28, 28, 28, 10, 10, 10, 1, 1] [2020-11-29 18:31:06,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:06,911 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:06,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:06,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1220339445, now seen corresponding path program 20 times [2020-11-29 18:31:06,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:06,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036790657] [2020-11-29 18:31:06,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3621 backedges. 1054 proven. 2324 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-11-29 18:31:07,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036790657] [2020-11-29 18:31:07,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67880333] [2020-11-29 18:31:07,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:07,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:31:07,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:07,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-29 18:31:07,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3621 backedges. 1054 proven. 2324 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-11-29 18:31:07,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:07,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2020-11-29 18:31:07,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603991344] [2020-11-29 18:31:07,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-29 18:31:07,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:07,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-29 18:31:07,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-11-29 18:31:07,661 INFO L87 Difference]: Start difference. First operand 2319 states and 2691 transitions. Second operand 31 states. [2020-11-29 18:31:07,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:07,800 INFO L93 Difference]: Finished difference Result 4483 states and 5228 transitions. [2020-11-29 18:31:07,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-29 18:31:07,801 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 228 [2020-11-29 18:31:07,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:07,802 INFO L225 Difference]: With dead ends: 4483 [2020-11-29 18:31:07,802 INFO L226 Difference]: Without dead ends: 2329 [2020-11-29 18:31:07,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-11-29 18:31:07,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2020-11-29 18:31:07,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2325. [2020-11-29 18:31:07,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2325 states. [2020-11-29 18:31:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2325 states to 2325 states and 2697 transitions. [2020-11-29 18:31:07,837 INFO L78 Accepts]: Start accepts. Automaton has 2325 states and 2697 transitions. Word has length 228 [2020-11-29 18:31:07,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:07,837 INFO L481 AbstractCegarLoop]: Abstraction has 2325 states and 2697 transitions. [2020-11-29 18:31:07,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-11-29 18:31:07,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2325 states and 2697 transitions. [2020-11-29 18:31:07,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-11-29 18:31:07,838 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:07,838 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 1, 1] [2020-11-29 18:31:08,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:08,039 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:08,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:08,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1324642751, now seen corresponding path program 37 times [2020-11-29 18:31:08,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:08,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338065250] [2020-11-29 18:31:08,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:09,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 4332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:09,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338065250] [2020-11-29 18:31:09,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969524341] [2020-11-29 18:31:09,111 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:09,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 40 conjunts are in the unsatisfiable core [2020-11-29 18:31:09,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:09,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 4332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:09,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:09,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2020-11-29 18:31:09,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110979264] [2020-11-29 18:31:09,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-11-29 18:31:09,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:09,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-11-29 18:31:09,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-11-29 18:31:09,256 INFO L87 Difference]: Start difference. First operand 2325 states and 2697 transitions. Second operand 41 states. [2020-11-29 18:31:09,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:09,590 INFO L93 Difference]: Finished difference Result 4581 states and 5334 transitions. [2020-11-29 18:31:09,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-29 18:31:09,591 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 232 [2020-11-29 18:31:09,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:09,594 INFO L225 Difference]: With dead ends: 4581 [2020-11-29 18:31:09,594 INFO L226 Difference]: Without dead ends: 4580 [2020-11-29 18:31:09,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-11-29 18:31:09,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4580 states. [2020-11-29 18:31:09,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4580 to 2388. [2020-11-29 18:31:09,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2020-11-29 18:31:09,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 2771 transitions. [2020-11-29 18:31:09,634 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 2771 transitions. Word has length 232 [2020-11-29 18:31:09,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:09,634 INFO L481 AbstractCegarLoop]: Abstraction has 2388 states and 2771 transitions. [2020-11-29 18:31:09,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-11-29 18:31:09,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 2771 transitions. [2020-11-29 18:31:09,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-11-29 18:31:09,636 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:09,636 INFO L422 BasicCegarLoop]: trace histogram [39, 38, 38, 29, 29, 29, 10, 10, 10, 1, 1] [2020-11-29 18:31:09,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2020-11-29 18:31:09,837 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:09,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:09,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2055661266, now seen corresponding path program 21 times [2020-11-29 18:31:09,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:09,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991633865] [2020-11-29 18:31:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 1091 proven. 2494 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-11-29 18:31:10,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991633865] [2020-11-29 18:31:10,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798670806] [2020-11-29 18:31:10,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:10,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-11-29 18:31:10,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:10,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 18:31:10,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:10,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 1345 proven. 323 refuted. 0 times theorem prover too weak. 2160 trivial. 0 not checked. [2020-11-29 18:31:10,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:10,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 13] total 44 [2020-11-29 18:31:10,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001242758] [2020-11-29 18:31:10,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-11-29 18:31:10,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:10,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-11-29 18:31:10,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-11-29 18:31:10,932 INFO L87 Difference]: Start difference. First operand 2388 states and 2771 transitions. Second operand 44 states. [2020-11-29 18:31:11,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:11,176 INFO L93 Difference]: Finished difference Result 4993 states and 5877 transitions. [2020-11-29 18:31:11,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-29 18:31:11,177 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 234 [2020-11-29 18:31:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:11,179 INFO L225 Difference]: With dead ends: 4993 [2020-11-29 18:31:11,179 INFO L226 Difference]: Without dead ends: 2776 [2020-11-29 18:31:11,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-11-29 18:31:11,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2020-11-29 18:31:11,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2748. [2020-11-29 18:31:11,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2748 states. [2020-11-29 18:31:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 3188 transitions. [2020-11-29 18:31:11,219 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 3188 transitions. Word has length 234 [2020-11-29 18:31:11,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:11,219 INFO L481 AbstractCegarLoop]: Abstraction has 2748 states and 3188 transitions. [2020-11-29 18:31:11,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-11-29 18:31:11,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 3188 transitions. [2020-11-29 18:31:11,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-11-29 18:31:11,220 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:11,221 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 1, 1] [2020-11-29 18:31:11,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:11,421 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:11,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:11,422 INFO L82 PathProgramCache]: Analyzing trace with hash -209585158, now seen corresponding path program 38 times [2020-11-29 18:31:11,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:11,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702670058] [2020-11-29 18:31:11,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:12,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702670058] [2020-11-29 18:31:12,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219822751] [2020-11-29 18:31:12,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:12,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:31:12,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:12,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 41 conjunts are in the unsatisfiable core [2020-11-29 18:31:12,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:12,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:12,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2020-11-29 18:31:12,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156725059] [2020-11-29 18:31:12,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-11-29 18:31:12,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:12,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-11-29 18:31:12,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-11-29 18:31:12,772 INFO L87 Difference]: Start difference. First operand 2748 states and 3188 transitions. Second operand 42 states. [2020-11-29 18:31:13,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:13,197 INFO L93 Difference]: Finished difference Result 5423 states and 6314 transitions. [2020-11-29 18:31:13,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-29 18:31:13,197 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 238 [2020-11-29 18:31:13,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:13,201 INFO L225 Difference]: With dead ends: 5423 [2020-11-29 18:31:13,201 INFO L226 Difference]: Without dead ends: 5422 [2020-11-29 18:31:13,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-11-29 18:31:13,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5422 states. [2020-11-29 18:31:13,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5422 to 2823. [2020-11-29 18:31:13,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2823 states. [2020-11-29 18:31:13,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 3276 transitions. [2020-11-29 18:31:13,244 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 3276 transitions. Word has length 238 [2020-11-29 18:31:13,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:13,244 INFO L481 AbstractCegarLoop]: Abstraction has 2823 states and 3276 transitions. [2020-11-29 18:31:13,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-11-29 18:31:13,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 3276 transitions. [2020-11-29 18:31:13,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-11-29 18:31:13,245 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:13,246 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 1, 1] [2020-11-29 18:31:13,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2020-11-29 18:31:13,446 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:13,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:13,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1192458995, now seen corresponding path program 39 times [2020-11-29 18:31:13,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:13,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146105536] [2020-11-29 18:31:13,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 4800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:14,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146105536] [2020-11-29 18:31:14,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576727072] [2020-11-29 18:31:14,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:14,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2020-11-29 18:31:14,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:14,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 42 conjunts are in the unsatisfiable core [2020-11-29 18:31:14,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 4800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:14,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:14,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2020-11-29 18:31:14,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310981709] [2020-11-29 18:31:14,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-11-29 18:31:14,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:14,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-11-29 18:31:14,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-11-29 18:31:14,746 INFO L87 Difference]: Start difference. First operand 2823 states and 3276 transitions. Second operand 43 states. [2020-11-29 18:31:15,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:15,228 INFO L93 Difference]: Finished difference Result 5575 states and 6492 transitions. [2020-11-29 18:31:15,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-29 18:31:15,229 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 244 [2020-11-29 18:31:15,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:15,233 INFO L225 Difference]: With dead ends: 5575 [2020-11-29 18:31:15,233 INFO L226 Difference]: Without dead ends: 5574 [2020-11-29 18:31:15,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-11-29 18:31:15,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5574 states. [2020-11-29 18:31:15,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5574 to 2898. [2020-11-29 18:31:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2898 states. [2020-11-29 18:31:15,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 3364 transitions. [2020-11-29 18:31:15,315 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 3364 transitions. Word has length 244 [2020-11-29 18:31:15,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:15,316 INFO L481 AbstractCegarLoop]: Abstraction has 2898 states and 3364 transitions. [2020-11-29 18:31:15,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-11-29 18:31:15,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 3364 transitions. [2020-11-29 18:31:15,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-11-29 18:31:15,318 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:15,319 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 1, 1] [2020-11-29 18:31:15,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:15,528 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:15,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:15,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1359078612, now seen corresponding path program 40 times [2020-11-29 18:31:15,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:15,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715513890] [2020-11-29 18:31:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 5043 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:16,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715513890] [2020-11-29 18:31:16,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825817017] [2020-11-29 18:31:16,511 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:16,573 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:31:16,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:16,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 43 conjunts are in the unsatisfiable core [2020-11-29 18:31:16,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:16,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5043 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:16,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:16,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2020-11-29 18:31:16,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296051930] [2020-11-29 18:31:16,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-11-29 18:31:16,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:16,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-11-29 18:31:16,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-11-29 18:31:16,680 INFO L87 Difference]: Start difference. First operand 2898 states and 3364 transitions. Second operand 44 states. [2020-11-29 18:31:17,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:17,075 INFO L93 Difference]: Finished difference Result 5727 states and 6670 transitions. [2020-11-29 18:31:17,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-29 18:31:17,076 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 250 [2020-11-29 18:31:17,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:17,080 INFO L225 Difference]: With dead ends: 5727 [2020-11-29 18:31:17,080 INFO L226 Difference]: Without dead ends: 5726 [2020-11-29 18:31:17,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-11-29 18:31:17,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5726 states. [2020-11-29 18:31:17,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5726 to 2973. [2020-11-29 18:31:17,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2973 states. [2020-11-29 18:31:17,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2973 states to 2973 states and 3452 transitions. [2020-11-29 18:31:17,127 INFO L78 Accepts]: Start accepts. Automaton has 2973 states and 3452 transitions. Word has length 250 [2020-11-29 18:31:17,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:17,128 INFO L481 AbstractCegarLoop]: Abstraction has 2973 states and 3452 transitions. [2020-11-29 18:31:17,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-11-29 18:31:17,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2973 states and 3452 transitions. [2020-11-29 18:31:17,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-11-29 18:31:17,129 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:17,130 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 1, 1] [2020-11-29 18:31:17,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-11-29 18:31:17,330 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:17,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:17,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1414271835, now seen corresponding path program 41 times [2020-11-29 18:31:17,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:17,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383077304] [2020-11-29 18:31:17,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:18,347 INFO L134 CoverageAnalysis]: Checked inductivity of 5292 backedges. 0 proven. 5292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:18,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383077304] [2020-11-29 18:31:18,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697062390] [2020-11-29 18:31:18,348 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:18,446 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2020-11-29 18:31:18,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:18,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 44 conjunts are in the unsatisfiable core [2020-11-29 18:31:18,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5292 backedges. 0 proven. 5292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:18,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:18,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2020-11-29 18:31:18,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621138276] [2020-11-29 18:31:18,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-11-29 18:31:18,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:18,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-11-29 18:31:18,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-11-29 18:31:18,547 INFO L87 Difference]: Start difference. First operand 2973 states and 3452 transitions. Second operand 45 states. [2020-11-29 18:31:19,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:19,076 INFO L93 Difference]: Finished difference Result 5879 states and 6848 transitions. [2020-11-29 18:31:19,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-29 18:31:19,077 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 256 [2020-11-29 18:31:19,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:19,081 INFO L225 Difference]: With dead ends: 5879 [2020-11-29 18:31:19,081 INFO L226 Difference]: Without dead ends: 5878 [2020-11-29 18:31:19,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-11-29 18:31:19,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5878 states. [2020-11-29 18:31:19,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5878 to 3048. [2020-11-29 18:31:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3048 states. [2020-11-29 18:31:19,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 3540 transitions. [2020-11-29 18:31:19,152 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 3540 transitions. Word has length 256 [2020-11-29 18:31:19,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:19,152 INFO L481 AbstractCegarLoop]: Abstraction has 3048 states and 3540 transitions. [2020-11-29 18:31:19,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-11-29 18:31:19,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 3540 transitions. [2020-11-29 18:31:19,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-11-29 18:31:19,155 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:19,155 INFO L422 BasicCegarLoop]: trace histogram [43, 42, 42, 31, 31, 31, 12, 12, 12, 1, 1] [2020-11-29 18:31:19,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:19,380 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:19,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:19,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1146931206, now seen corresponding path program 22 times [2020-11-29 18:31:19,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:19,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824699996] [2020-11-29 18:31:19,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:20,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4632 backedges. 1417 proven. 2852 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2020-11-29 18:31:20,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824699996] [2020-11-29 18:31:20,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693927897] [2020-11-29 18:31:20,053 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:20,112 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:31:20,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:20,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-29 18:31:20,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4632 backedges. 1417 proven. 2852 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2020-11-29 18:31:20,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:20,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2020-11-29 18:31:20,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404234902] [2020-11-29 18:31:20,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-11-29 18:31:20,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:20,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-11-29 18:31:20,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-11-29 18:31:20,208 INFO L87 Difference]: Start difference. First operand 3048 states and 3540 transitions. Second operand 34 states. [2020-11-29 18:31:20,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:20,443 INFO L93 Difference]: Finished difference Result 5923 states and 6908 transitions. [2020-11-29 18:31:20,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-29 18:31:20,443 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 258 [2020-11-29 18:31:20,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:20,447 INFO L225 Difference]: With dead ends: 5923 [2020-11-29 18:31:20,447 INFO L226 Difference]: Without dead ends: 3058 [2020-11-29 18:31:20,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-11-29 18:31:20,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2020-11-29 18:31:20,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 3054. [2020-11-29 18:31:20,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3054 states. [2020-11-29 18:31:20,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3054 states to 3054 states and 3546 transitions. [2020-11-29 18:31:20,521 INFO L78 Accepts]: Start accepts. Automaton has 3054 states and 3546 transitions. Word has length 258 [2020-11-29 18:31:20,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:20,521 INFO L481 AbstractCegarLoop]: Abstraction has 3054 states and 3546 transitions. [2020-11-29 18:31:20,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-11-29 18:31:20,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3054 states and 3546 transitions. [2020-11-29 18:31:20,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-11-29 18:31:20,524 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:20,524 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 1, 1] [2020-11-29 18:31:20,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2020-11-29 18:31:20,740 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:20,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:20,741 INFO L82 PathProgramCache]: Analyzing trace with hash -2082799778, now seen corresponding path program 42 times [2020-11-29 18:31:20,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:20,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541148977] [2020-11-29 18:31:20,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:21,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541148977] [2020-11-29 18:31:21,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928430579] [2020-11-29 18:31:21,905 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:21,985 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2020-11-29 18:31:21,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:21,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 45 conjunts are in the unsatisfiable core [2020-11-29 18:31:21,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:22,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:22,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2020-11-29 18:31:22,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540777485] [2020-11-29 18:31:22,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-11-29 18:31:22,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:22,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-11-29 18:31:22,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-11-29 18:31:22,086 INFO L87 Difference]: Start difference. First operand 3054 states and 3546 transitions. Second operand 46 states. [2020-11-29 18:31:22,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:22,590 INFO L93 Difference]: Finished difference Result 6037 states and 7032 transitions. [2020-11-29 18:31:22,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-29 18:31:22,591 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 262 [2020-11-29 18:31:22,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:22,595 INFO L225 Difference]: With dead ends: 6037 [2020-11-29 18:31:22,595 INFO L226 Difference]: Without dead ends: 6036 [2020-11-29 18:31:22,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-11-29 18:31:22,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6036 states. [2020-11-29 18:31:22,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6036 to 3129. [2020-11-29 18:31:22,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3129 states. [2020-11-29 18:31:22,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 3634 transitions. [2020-11-29 18:31:22,645 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 3634 transitions. Word has length 262 [2020-11-29 18:31:22,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:22,645 INFO L481 AbstractCegarLoop]: Abstraction has 3129 states and 3634 transitions. [2020-11-29 18:31:22,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-11-29 18:31:22,646 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 3634 transitions. [2020-11-29 18:31:22,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-11-29 18:31:22,647 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:22,647 INFO L422 BasicCegarLoop]: trace histogram [44, 43, 43, 32, 32, 32, 12, 12, 12, 1, 1] [2020-11-29 18:31:22,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-11-29 18:31:22,848 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:22,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:22,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1358294913, now seen corresponding path program 23 times [2020-11-29 18:31:22,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:22,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188961399] [2020-11-29 18:31:22,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:23,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4865 backedges. 1462 proven. 3040 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2020-11-29 18:31:23,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188961399] [2020-11-29 18:31:23,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063677752] [2020-11-29 18:31:23,559 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:23,645 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2020-11-29 18:31:23,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:23,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-29 18:31:23,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4865 backedges. 1462 proven. 3040 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2020-11-29 18:31:23,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:23,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2020-11-29 18:31:23,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620123577] [2020-11-29 18:31:23,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-29 18:31:23,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:23,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-29 18:31:23,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-11-29 18:31:23,716 INFO L87 Difference]: Start difference. First operand 3129 states and 3634 transitions. Second operand 35 states. [2020-11-29 18:31:23,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:23,859 INFO L93 Difference]: Finished difference Result 6079 states and 7090 transitions. [2020-11-29 18:31:23,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-29 18:31:23,859 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 264 [2020-11-29 18:31:23,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:23,862 INFO L225 Difference]: With dead ends: 6079 [2020-11-29 18:31:23,862 INFO L226 Difference]: Without dead ends: 3139 [2020-11-29 18:31:23,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-11-29 18:31:23,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-11-29 18:31:23,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3135. [2020-11-29 18:31:23,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3135 states. [2020-11-29 18:31:23,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 3640 transitions. [2020-11-29 18:31:23,909 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 3640 transitions. Word has length 264 [2020-11-29 18:31:23,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:23,909 INFO L481 AbstractCegarLoop]: Abstraction has 3135 states and 3640 transitions. [2020-11-29 18:31:23,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-11-29 18:31:23,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 3640 transitions. [2020-11-29 18:31:23,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-11-29 18:31:23,911 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:23,911 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 1, 1] [2020-11-29 18:31:24,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:24,116 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:24,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:24,117 INFO L82 PathProgramCache]: Analyzing trace with hash -850566313, now seen corresponding path program 43 times [2020-11-29 18:31:24,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:24,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705263406] [2020-11-29 18:31:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:25,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705263406] [2020-11-29 18:31:25,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194279480] [2020-11-29 18:31:25,321 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:25,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 46 conjunts are in the unsatisfiable core [2020-11-29 18:31:25,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:25,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:25,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2020-11-29 18:31:25,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623212422] [2020-11-29 18:31:25,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-11-29 18:31:25,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:25,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-11-29 18:31:25,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-11-29 18:31:25,513 INFO L87 Difference]: Start difference. First operand 3135 states and 3640 transitions. Second operand 47 states. [2020-11-29 18:31:26,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:26,025 INFO L93 Difference]: Finished difference Result 6195 states and 7216 transitions. [2020-11-29 18:31:26,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-29 18:31:26,025 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 268 [2020-11-29 18:31:26,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:26,030 INFO L225 Difference]: With dead ends: 6195 [2020-11-29 18:31:26,030 INFO L226 Difference]: Without dead ends: 6194 [2020-11-29 18:31:26,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-11-29 18:31:26,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6194 states. [2020-11-29 18:31:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6194 to 3210. [2020-11-29 18:31:26,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3210 states. [2020-11-29 18:31:26,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 3728 transitions. [2020-11-29 18:31:26,088 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 3728 transitions. Word has length 268 [2020-11-29 18:31:26,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:26,089 INFO L481 AbstractCegarLoop]: Abstraction has 3210 states and 3728 transitions. [2020-11-29 18:31:26,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-11-29 18:31:26,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 3728 transitions. [2020-11-29 18:31:26,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-11-29 18:31:26,091 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:26,091 INFO L422 BasicCegarLoop]: trace histogram [45, 44, 44, 33, 33, 33, 12, 12, 12, 1, 1] [2020-11-29 18:31:26,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:26,292 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:26,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:26,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1702058552, now seen corresponding path program 24 times [2020-11-29 18:31:26,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:26,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591841623] [2020-11-29 18:31:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5104 backedges. 1507 proven. 3234 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2020-11-29 18:31:27,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591841623] [2020-11-29 18:31:27,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963852081] [2020-11-29 18:31:27,007 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:27,069 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2020-11-29 18:31:27,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:27,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 18:31:27,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:27,674 INFO L134 CoverageAnalysis]: Checked inductivity of 5104 backedges. 1656 proven. 408 refuted. 0 times theorem prover too weak. 3040 trivial. 0 not checked. [2020-11-29 18:31:27,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:27,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 14] total 49 [2020-11-29 18:31:27,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214863737] [2020-11-29 18:31:27,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-11-29 18:31:27,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:27,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-11-29 18:31:27,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-11-29 18:31:27,676 INFO L87 Difference]: Start difference. First operand 3210 states and 3728 transitions. Second operand 49 states. [2020-11-29 18:31:27,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:27,947 INFO L93 Difference]: Finished difference Result 6471 states and 7576 transitions. [2020-11-29 18:31:27,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-29 18:31:27,947 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 270 [2020-11-29 18:31:27,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:27,950 INFO L225 Difference]: With dead ends: 6471 [2020-11-29 18:31:27,950 INFO L226 Difference]: Without dead ends: 3456 [2020-11-29 18:31:27,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-11-29 18:31:27,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3456 states. [2020-11-29 18:31:27,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3456 to 3423. [2020-11-29 18:31:27,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3423 states. [2020-11-29 18:31:28,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3423 states to 3423 states and 3974 transitions. [2020-11-29 18:31:28,001 INFO L78 Accepts]: Start accepts. Automaton has 3423 states and 3974 transitions. Word has length 270 [2020-11-29 18:31:28,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:28,001 INFO L481 AbstractCegarLoop]: Abstraction has 3423 states and 3974 transitions. [2020-11-29 18:31:28,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-11-29 18:31:28,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3423 states and 3974 transitions. [2020-11-29 18:31:28,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-11-29 18:31:28,003 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:28,003 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 1, 1] [2020-11-29 18:31:28,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:28,203 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:28,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:28,204 INFO L82 PathProgramCache]: Analyzing trace with hash 907618448, now seen corresponding path program 44 times [2020-11-29 18:31:28,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:28,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837055497] [2020-11-29 18:31:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:29,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 0 proven. 6075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:29,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837055497] [2020-11-29 18:31:29,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917638537] [2020-11-29 18:31:29,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:29,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:31:29,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:29,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 47 conjunts are in the unsatisfiable core [2020-11-29 18:31:29,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 0 proven. 6075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:29,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:29,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2020-11-29 18:31:29,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010724692] [2020-11-29 18:31:29,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-11-29 18:31:29,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:29,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-11-29 18:31:29,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-11-29 18:31:29,511 INFO L87 Difference]: Start difference. First operand 3423 states and 3974 transitions. Second operand 48 states. [2020-11-29 18:31:30,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:30,187 INFO L93 Difference]: Finished difference Result 6764 states and 7878 transitions. [2020-11-29 18:31:30,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-29 18:31:30,188 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 274 [2020-11-29 18:31:30,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:30,193 INFO L225 Difference]: With dead ends: 6764 [2020-11-29 18:31:30,193 INFO L226 Difference]: Without dead ends: 6763 [2020-11-29 18:31:30,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-11-29 18:31:30,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2020-11-29 18:31:30,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 3504. [2020-11-29 18:31:30,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3504 states. [2020-11-29 18:31:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3504 states to 3504 states and 4069 transitions. [2020-11-29 18:31:30,249 INFO L78 Accepts]: Start accepts. Automaton has 3504 states and 4069 transitions. Word has length 274 [2020-11-29 18:31:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:30,249 INFO L481 AbstractCegarLoop]: Abstraction has 3504 states and 4069 transitions. [2020-11-29 18:31:30,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-11-29 18:31:30,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3504 states and 4069 transitions. [2020-11-29 18:31:30,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-11-29 18:31:30,251 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:30,251 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1] [2020-11-29 18:31:30,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:30,451 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:30,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:30,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1920966903, now seen corresponding path program 45 times [2020-11-29 18:31:30,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:30,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28820280] [2020-11-29 18:31:30,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:31,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28820280] [2020-11-29 18:31:31,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538282806] [2020-11-29 18:31:31,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:31,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2020-11-29 18:31:31,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:31,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 48 conjunts are in the unsatisfiable core [2020-11-29 18:31:31,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:31,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:31,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:31,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2020-11-29 18:31:31,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207502104] [2020-11-29 18:31:31,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-11-29 18:31:31,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:31,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-11-29 18:31:31,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-11-29 18:31:31,970 INFO L87 Difference]: Start difference. First operand 3504 states and 4069 transitions. Second operand 49 states. [2020-11-29 18:31:32,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:32,430 INFO L93 Difference]: Finished difference Result 6928 states and 8070 transitions. [2020-11-29 18:31:32,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-29 18:31:32,431 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 280 [2020-11-29 18:31:32,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:32,436 INFO L225 Difference]: With dead ends: 6928 [2020-11-29 18:31:32,436 INFO L226 Difference]: Without dead ends: 6927 [2020-11-29 18:31:32,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-11-29 18:31:32,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6927 states. [2020-11-29 18:31:32,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6927 to 3585. [2020-11-29 18:31:32,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3585 states. [2020-11-29 18:31:32,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 4164 transitions. [2020-11-29 18:31:32,491 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 4164 transitions. Word has length 280 [2020-11-29 18:31:32,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:32,491 INFO L481 AbstractCegarLoop]: Abstraction has 3585 states and 4164 transitions. [2020-11-29 18:31:32,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-11-29 18:31:32,491 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 4164 transitions. [2020-11-29 18:31:32,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-11-29 18:31:32,493 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:32,493 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 1, 1] [2020-11-29 18:31:32,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2020-11-29 18:31:32,694 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:32,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:32,694 INFO L82 PathProgramCache]: Analyzing trace with hash 217650882, now seen corresponding path program 46 times [2020-11-29 18:31:32,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:32,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848626563] [2020-11-29 18:31:32,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:33,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6627 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:33,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848626563] [2020-11-29 18:31:33,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177484456] [2020-11-29 18:31:33,931 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:33,994 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:31:33,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:33,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 49 conjunts are in the unsatisfiable core [2020-11-29 18:31:33,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:34,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6627 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:34,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:34,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2020-11-29 18:31:34,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201220183] [2020-11-29 18:31:34,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-11-29 18:31:34,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:34,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-11-29 18:31:34,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-11-29 18:31:34,084 INFO L87 Difference]: Start difference. First operand 3585 states and 4164 transitions. Second operand 50 states. [2020-11-29 18:31:34,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:34,626 INFO L93 Difference]: Finished difference Result 7092 states and 8262 transitions. [2020-11-29 18:31:34,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-29 18:31:34,626 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 286 [2020-11-29 18:31:34,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:34,632 INFO L225 Difference]: With dead ends: 7092 [2020-11-29 18:31:34,632 INFO L226 Difference]: Without dead ends: 7091 [2020-11-29 18:31:34,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-11-29 18:31:34,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7091 states. [2020-11-29 18:31:34,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7091 to 3666. [2020-11-29 18:31:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3666 states. [2020-11-29 18:31:34,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 4259 transitions. [2020-11-29 18:31:34,689 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 4259 transitions. Word has length 286 [2020-11-29 18:31:34,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:34,689 INFO L481 AbstractCegarLoop]: Abstraction has 3666 states and 4259 transitions. [2020-11-29 18:31:34,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-11-29 18:31:34,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 4259 transitions. [2020-11-29 18:31:34,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-11-29 18:31:34,691 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:34,691 INFO L422 BasicCegarLoop]: trace histogram [48, 47, 47, 35, 35, 35, 13, 13, 13, 1, 1] [2020-11-29 18:31:34,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:34,891 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:34,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:34,892 INFO L82 PathProgramCache]: Analyzing trace with hash -901396899, now seen corresponding path program 25 times [2020-11-29 18:31:34,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:34,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16691189] [2020-11-29 18:31:34,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5811 backedges. 1739 proven. 3640 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2020-11-29 18:31:35,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16691189] [2020-11-29 18:31:35,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649017454] [2020-11-29 18:31:35,675 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:35,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-29 18:31:35,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5811 backedges. 1739 proven. 3640 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2020-11-29 18:31:35,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:35,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2020-11-29 18:31:35,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713821838] [2020-11-29 18:31:35,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-11-29 18:31:35,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:35,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-11-29 18:31:35,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-11-29 18:31:35,812 INFO L87 Difference]: Start difference. First operand 3666 states and 4259 transitions. Second operand 38 states. [2020-11-29 18:31:35,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:35,979 INFO L93 Difference]: Finished difference Result 7135 states and 8322 transitions. [2020-11-29 18:31:35,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-29 18:31:35,980 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 288 [2020-11-29 18:31:35,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:35,982 INFO L225 Difference]: With dead ends: 7135 [2020-11-29 18:31:35,983 INFO L226 Difference]: Without dead ends: 3676 [2020-11-29 18:31:35,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-11-29 18:31:35,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2020-11-29 18:31:36,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3672. [2020-11-29 18:31:36,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3672 states. [2020-11-29 18:31:36,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 4265 transitions. [2020-11-29 18:31:36,036 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 4265 transitions. Word has length 288 [2020-11-29 18:31:36,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:36,036 INFO L481 AbstractCegarLoop]: Abstraction has 3672 states and 4265 transitions. [2020-11-29 18:31:36,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-11-29 18:31:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 4265 transitions. [2020-11-29 18:31:36,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-11-29 18:31:36,038 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:36,038 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 1, 1] [2020-11-29 18:31:36,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2020-11-29 18:31:36,239 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:36,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:36,239 INFO L82 PathProgramCache]: Analyzing trace with hash -517120069, now seen corresponding path program 47 times [2020-11-29 18:31:36,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:36,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930822578] [2020-11-29 18:31:36,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:37,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6912 backedges. 0 proven. 6912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:37,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930822578] [2020-11-29 18:31:37,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480567059] [2020-11-29 18:31:37,531 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:37,625 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2020-11-29 18:31:37,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:37,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 50 conjunts are in the unsatisfiable core [2020-11-29 18:31:37,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:37,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6912 backedges. 0 proven. 6912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:37,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:37,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2020-11-29 18:31:37,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467030032] [2020-11-29 18:31:37,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-11-29 18:31:37,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:37,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-11-29 18:31:37,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-11-29 18:31:37,717 INFO L87 Difference]: Start difference. First operand 3672 states and 4265 transitions. Second operand 51 states. [2020-11-29 18:31:38,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:38,288 INFO L93 Difference]: Finished difference Result 7262 states and 8460 transitions. [2020-11-29 18:31:38,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-29 18:31:38,288 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 292 [2020-11-29 18:31:38,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:38,293 INFO L225 Difference]: With dead ends: 7262 [2020-11-29 18:31:38,293 INFO L226 Difference]: Without dead ends: 7261 [2020-11-29 18:31:38,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-11-29 18:31:38,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7261 states. [2020-11-29 18:31:38,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7261 to 3753. [2020-11-29 18:31:38,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3753 states. [2020-11-29 18:31:38,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3753 states to 3753 states and 4360 transitions. [2020-11-29 18:31:38,363 INFO L78 Accepts]: Start accepts. Automaton has 3753 states and 4360 transitions. Word has length 292 [2020-11-29 18:31:38,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:38,364 INFO L481 AbstractCegarLoop]: Abstraction has 3753 states and 4360 transitions. [2020-11-29 18:31:38,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-11-29 18:31:38,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3753 states and 4360 transitions. [2020-11-29 18:31:38,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-11-29 18:31:38,367 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:38,367 INFO L422 BasicCegarLoop]: trace histogram [49, 48, 48, 36, 36, 36, 13, 13, 13, 1, 1] [2020-11-29 18:31:38,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:38,580 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:38,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:38,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1653323030, now seen corresponding path program 26 times [2020-11-29 18:31:38,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:38,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467029169] [2020-11-29 18:31:38,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:39,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6072 backedges. 1788 proven. 3852 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2020-11-29 18:31:39,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467029169] [2020-11-29 18:31:39,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321007342] [2020-11-29 18:31:39,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:39,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:31:39,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:39,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 38 conjunts are in the unsatisfiable core [2020-11-29 18:31:39,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:39,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6072 backedges. 1788 proven. 3852 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2020-11-29 18:31:39,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:39,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2020-11-29 18:31:39,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966434380] [2020-11-29 18:31:39,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-11-29 18:31:39,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:39,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-11-29 18:31:39,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-11-29 18:31:39,648 INFO L87 Difference]: Start difference. First operand 3753 states and 4360 transitions. Second operand 39 states. [2020-11-29 18:31:39,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:39,816 INFO L93 Difference]: Finished difference Result 7303 states and 8518 transitions. [2020-11-29 18:31:39,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-29 18:31:39,816 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 294 [2020-11-29 18:31:39,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:39,819 INFO L225 Difference]: With dead ends: 7303 [2020-11-29 18:31:39,819 INFO L226 Difference]: Without dead ends: 3763 [2020-11-29 18:31:39,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-11-29 18:31:39,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2020-11-29 18:31:39,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3759. [2020-11-29 18:31:39,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3759 states. [2020-11-29 18:31:39,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 4366 transitions. [2020-11-29 18:31:39,873 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 4366 transitions. Word has length 294 [2020-11-29 18:31:39,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:39,873 INFO L481 AbstractCegarLoop]: Abstraction has 3759 states and 4366 transitions. [2020-11-29 18:31:39,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-11-29 18:31:39,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 4366 transitions. [2020-11-29 18:31:39,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-11-29 18:31:39,875 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:39,875 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 1, 1] [2020-11-29 18:31:40,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-11-29 18:31:40,075 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:40,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:40,076 INFO L82 PathProgramCache]: Analyzing trace with hash -218412556, now seen corresponding path program 48 times [2020-11-29 18:31:40,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:40,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501498109] [2020-11-29 18:31:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 7203 backedges. 0 proven. 7203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:41,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501498109] [2020-11-29 18:31:41,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014067892] [2020-11-29 18:31:41,447 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:41,543 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2020-11-29 18:31:41,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:41,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 51 conjunts are in the unsatisfiable core [2020-11-29 18:31:41,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 7203 backedges. 0 proven. 7203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:41,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:41,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2020-11-29 18:31:41,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206689960] [2020-11-29 18:31:41,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-11-29 18:31:41,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:41,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-11-29 18:31:41,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-11-29 18:31:41,642 INFO L87 Difference]: Start difference. First operand 3759 states and 4366 transitions. Second operand 52 states. [2020-11-29 18:31:42,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:42,230 INFO L93 Difference]: Finished difference Result 7432 states and 8658 transitions. [2020-11-29 18:31:42,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-11-29 18:31:42,230 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 298 [2020-11-29 18:31:42,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:42,236 INFO L225 Difference]: With dead ends: 7432 [2020-11-29 18:31:42,236 INFO L226 Difference]: Without dead ends: 7431 [2020-11-29 18:31:42,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-11-29 18:31:42,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7431 states. [2020-11-29 18:31:42,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7431 to 3840. [2020-11-29 18:31:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3840 states. [2020-11-29 18:31:42,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3840 states to 3840 states and 4461 transitions. [2020-11-29 18:31:42,308 INFO L78 Accepts]: Start accepts. Automaton has 3840 states and 4461 transitions. Word has length 298 [2020-11-29 18:31:42,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:42,308 INFO L481 AbstractCegarLoop]: Abstraction has 3840 states and 4461 transitions. [2020-11-29 18:31:42,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-11-29 18:31:42,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3840 states and 4461 transitions. [2020-11-29 18:31:42,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-11-29 18:31:42,311 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:42,312 INFO L422 BasicCegarLoop]: trace histogram [50, 49, 49, 37, 37, 37, 13, 13, 13, 1, 1] [2020-11-29 18:31:42,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:42,520 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:42,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:42,520 INFO L82 PathProgramCache]: Analyzing trace with hash 948434191, now seen corresponding path program 27 times [2020-11-29 18:31:42,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:42,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954200884] [2020-11-29 18:31:42,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:43,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6339 backedges. 1837 proven. 4070 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2020-11-29 18:31:43,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954200884] [2020-11-29 18:31:43,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408211152] [2020-11-29 18:31:43,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:43,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2020-11-29 18:31:43,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:43,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 18:31:43,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:44,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6339 backedges. 2163 proven. 536 refuted. 0 times theorem prover too weak. 3640 trivial. 0 not checked. [2020-11-29 18:31:44,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:44,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 16] total 55 [2020-11-29 18:31:44,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156020128] [2020-11-29 18:31:44,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-11-29 18:31:44,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:44,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-11-29 18:31:44,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2020-11-29 18:31:44,108 INFO L87 Difference]: Start difference. First operand 3840 states and 4461 transitions. Second operand 55 states. [2020-11-29 18:31:44,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:44,428 INFO L93 Difference]: Finished difference Result 7953 states and 9345 transitions. [2020-11-29 18:31:44,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-11-29 18:31:44,429 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 300 [2020-11-29 18:31:44,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:44,432 INFO L225 Difference]: With dead ends: 7953 [2020-11-29 18:31:44,432 INFO L226 Difference]: Without dead ends: 4332 [2020-11-29 18:31:44,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2020-11-29 18:31:44,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2020-11-29 18:31:44,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 4296. [2020-11-29 18:31:44,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4296 states. [2020-11-29 18:31:44,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 4990 transitions. [2020-11-29 18:31:44,496 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 4990 transitions. Word has length 300 [2020-11-29 18:31:44,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:44,496 INFO L481 AbstractCegarLoop]: Abstraction has 4296 states and 4990 transitions. [2020-11-29 18:31:44,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-11-29 18:31:44,496 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 4990 transitions. [2020-11-29 18:31:44,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-11-29 18:31:44,498 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:44,498 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 1, 1] [2020-11-29 18:31:44,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:44,699 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:44,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:44,699 INFO L82 PathProgramCache]: Analyzing trace with hash -260774547, now seen corresponding path program 49 times [2020-11-29 18:31:44,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:44,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569827583] [2020-11-29 18:31:44,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:46,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569827583] [2020-11-29 18:31:46,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122975629] [2020-11-29 18:31:46,111 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:46,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 52 conjunts are in the unsatisfiable core [2020-11-29 18:31:46,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:46,278 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:46,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:46,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2020-11-29 18:31:46,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182229616] [2020-11-29 18:31:46,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-11-29 18:31:46,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:46,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-11-29 18:31:46,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2020-11-29 18:31:46,280 INFO L87 Difference]: Start difference. First operand 4296 states and 4990 transitions. Second operand 53 states. [2020-11-29 18:31:46,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:46,808 INFO L93 Difference]: Finished difference Result 8502 states and 9904 transitions. [2020-11-29 18:31:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-11-29 18:31:46,808 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 304 [2020-11-29 18:31:46,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:46,814 INFO L225 Difference]: With dead ends: 8502 [2020-11-29 18:31:46,814 INFO L226 Difference]: Without dead ends: 8501 [2020-11-29 18:31:46,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2020-11-29 18:31:46,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8501 states. [2020-11-29 18:31:46,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8501 to 4389. [2020-11-29 18:31:46,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4389 states. [2020-11-29 18:31:46,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4389 states to 4389 states and 5099 transitions. [2020-11-29 18:31:46,880 INFO L78 Accepts]: Start accepts. Automaton has 4389 states and 5099 transitions. Word has length 304 [2020-11-29 18:31:46,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:46,880 INFO L481 AbstractCegarLoop]: Abstraction has 4389 states and 5099 transitions. [2020-11-29 18:31:46,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-11-29 18:31:46,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4389 states and 5099 transitions. [2020-11-29 18:31:46,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-11-29 18:31:46,882 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:46,882 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 1, 1] [2020-11-29 18:31:47,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:47,083 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:47,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:47,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1780465114, now seen corresponding path program 50 times [2020-11-29 18:31:47,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:47,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665160461] [2020-11-29 18:31:47,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:48,576 INFO L134 CoverageAnalysis]: Checked inductivity of 7803 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:48,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665160461] [2020-11-29 18:31:48,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649446874] [2020-11-29 18:31:48,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:48,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:31:48,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:48,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 53 conjunts are in the unsatisfiable core [2020-11-29 18:31:48,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:48,744 INFO L134 CoverageAnalysis]: Checked inductivity of 7803 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:48,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:48,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2020-11-29 18:31:48,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666645064] [2020-11-29 18:31:48,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-11-29 18:31:48,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:48,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-11-29 18:31:48,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2020-11-29 18:31:48,745 INFO L87 Difference]: Start difference. First operand 4389 states and 5099 transitions. Second operand 54 states. [2020-11-29 18:31:49,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:49,409 INFO L93 Difference]: Finished difference Result 8690 states and 10124 transitions. [2020-11-29 18:31:49,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-29 18:31:49,410 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 310 [2020-11-29 18:31:49,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:49,417 INFO L225 Difference]: With dead ends: 8690 [2020-11-29 18:31:49,417 INFO L226 Difference]: Without dead ends: 8689 [2020-11-29 18:31:49,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2020-11-29 18:31:49,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8689 states. [2020-11-29 18:31:49,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8689 to 4482. [2020-11-29 18:31:49,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4482 states. [2020-11-29 18:31:49,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 5208 transitions. [2020-11-29 18:31:49,493 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 5208 transitions. Word has length 310 [2020-11-29 18:31:49,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:49,493 INFO L481 AbstractCegarLoop]: Abstraction has 4482 states and 5208 transitions. [2020-11-29 18:31:49,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-11-29 18:31:49,493 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 5208 transitions. [2020-11-29 18:31:49,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-11-29 18:31:49,495 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:49,495 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 1, 1] [2020-11-29 18:31:49,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:49,696 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:49,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:49,696 INFO L82 PathProgramCache]: Analyzing trace with hash 917991455, now seen corresponding path program 51 times [2020-11-29 18:31:49,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:49,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918756198] [2020-11-29 18:31:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:51,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8112 backedges. 0 proven. 8112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:51,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918756198] [2020-11-29 18:31:51,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563237607] [2020-11-29 18:31:51,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:51,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2020-11-29 18:31:51,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:51,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 54 conjunts are in the unsatisfiable core [2020-11-29 18:31:51,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:51,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8112 backedges. 0 proven. 8112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:51,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:51,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2020-11-29 18:31:51,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844162423] [2020-11-29 18:31:51,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-11-29 18:31:51,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:51,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-11-29 18:31:51,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2020-11-29 18:31:51,499 INFO L87 Difference]: Start difference. First operand 4482 states and 5208 transitions. Second operand 55 states. [2020-11-29 18:31:52,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:52,174 INFO L93 Difference]: Finished difference Result 8878 states and 10344 transitions. [2020-11-29 18:31:52,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-11-29 18:31:52,174 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 316 [2020-11-29 18:31:52,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:52,180 INFO L225 Difference]: With dead ends: 8878 [2020-11-29 18:31:52,180 INFO L226 Difference]: Without dead ends: 8877 [2020-11-29 18:31:52,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2020-11-29 18:31:52,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8877 states. [2020-11-29 18:31:52,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8877 to 4575. [2020-11-29 18:31:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4575 states. [2020-11-29 18:31:52,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 5317 transitions. [2020-11-29 18:31:52,248 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 5317 transitions. Word has length 316 [2020-11-29 18:31:52,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:52,248 INFO L481 AbstractCegarLoop]: Abstraction has 4575 states and 5317 transitions. [2020-11-29 18:31:52,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-11-29 18:31:52,249 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 5317 transitions. [2020-11-29 18:31:52,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-11-29 18:31:52,251 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:52,251 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 53, 53, 1, 1] [2020-11-29 18:31:52,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:52,451 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:52,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:52,452 INFO L82 PathProgramCache]: Analyzing trace with hash -2035777704, now seen corresponding path program 52 times [2020-11-29 18:31:52,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:52,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934393355] [2020-11-29 18:31:52,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 8427 backedges. 0 proven. 8427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:31:54,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934393355] [2020-11-29 18:31:54,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380439252] [2020-11-29 18:31:54,055 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:54,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:31:54,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:54,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 53 conjunts are in the unsatisfiable core [2020-11-29 18:31:54,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:57,371 INFO L134 CoverageAnalysis]: Checked inductivity of 8427 backedges. 8419 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-29 18:31:57,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:31:57,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [54] total 107 [2020-11-29 18:31:57,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86131257] [2020-11-29 18:31:57,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-11-29 18:31:57,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:57,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-11-29 18:31:57,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2970, Invalid=8586, Unknown=0, NotChecked=0, Total=11556 [2020-11-29 18:31:57,373 INFO L87 Difference]: Start difference. First operand 4575 states and 5317 transitions. Second operand 54 states. [2020-11-29 18:31:57,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:57,798 INFO L93 Difference]: Finished difference Result 5932 states and 6930 transitions. [2020-11-29 18:31:57,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-29 18:31:57,799 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 322 [2020-11-29 18:31:57,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:57,800 INFO L225 Difference]: With dead ends: 5932 [2020-11-29 18:31:57,800 INFO L226 Difference]: Without dead ends: 1588 [2020-11-29 18:31:57,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2756 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2970, Invalid=8586, Unknown=0, NotChecked=0, Total=11556 [2020-11-29 18:31:57,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2020-11-29 18:31:57,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 397. [2020-11-29 18:31:57,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-11-29 18:31:57,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 409 transitions. [2020-11-29 18:31:57,814 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 409 transitions. Word has length 322 [2020-11-29 18:31:57,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:57,815 INFO L481 AbstractCegarLoop]: Abstraction has 397 states and 409 transitions. [2020-11-29 18:31:57,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-11-29 18:31:57,815 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 409 transitions. [2020-11-29 18:31:57,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-11-29 18:31:57,816 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:57,817 INFO L422 BasicCegarLoop]: trace histogram [54, 53, 53, 39, 39, 39, 15, 15, 15, 1, 1] [2020-11-29 18:31:58,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:58,017 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:58,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:58,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1417230873, now seen corresponding path program 28 times [2020-11-29 18:31:58,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:58,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481277982] [2020-11-29 18:31:58,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:31:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 7363 backedges. 2251 proven. 4524 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2020-11-29 18:31:58,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481277982] [2020-11-29 18:31:58,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864218354] [2020-11-29 18:31:58,940 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:59,012 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:31:59,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:31:59,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 41 conjunts are in the unsatisfiable core [2020-11-29 18:31:59,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:31:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7363 backedges. 2251 proven. 4524 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2020-11-29 18:31:59,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:31:59,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2020-11-29 18:31:59,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654843292] [2020-11-29 18:31:59,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-11-29 18:31:59,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:31:59,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-11-29 18:31:59,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-11-29 18:31:59,111 INFO L87 Difference]: Start difference. First operand 397 states and 409 transitions. Second operand 42 states. [2020-11-29 18:31:59,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:31:59,294 INFO L93 Difference]: Finished difference Result 485 states and 497 transitions. [2020-11-29 18:31:59,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-29 18:31:59,294 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 324 [2020-11-29 18:31:59,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:31:59,295 INFO L225 Difference]: With dead ends: 485 [2020-11-29 18:31:59,295 INFO L226 Difference]: Without dead ends: 397 [2020-11-29 18:31:59,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-11-29 18:31:59,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-11-29 18:31:59,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2020-11-29 18:31:59,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-11-29 18:31:59,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 408 transitions. [2020-11-29 18:31:59,302 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 408 transitions. Word has length 324 [2020-11-29 18:31:59,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:31:59,302 INFO L481 AbstractCegarLoop]: Abstraction has 397 states and 408 transitions. [2020-11-29 18:31:59,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-11-29 18:31:59,302 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 408 transitions. [2020-11-29 18:31:59,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-11-29 18:31:59,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:31:59,304 INFO L422 BasicCegarLoop]: trace histogram [55, 54, 54, 40, 40, 40, 15, 15, 15, 1, 1] [2020-11-29 18:31:59,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:31:59,504 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:31:59,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:31:59,505 INFO L82 PathProgramCache]: Analyzing trace with hash -2143974368, now seen corresponding path program 29 times [2020-11-29 18:31:59,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:31:59,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571453164] [2020-11-29 18:31:59,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:31:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:00,515 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 2308 proven. 4760 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2020-11-29 18:32:00,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571453164] [2020-11-29 18:32:00,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991037933] [2020-11-29 18:32:00,515 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:00,617 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2020-11-29 18:32:00,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:32:00,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 42 conjunts are in the unsatisfiable core [2020-11-29 18:32:00,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:32:00,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 2308 proven. 4760 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2020-11-29 18:32:00,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:32:00,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2020-11-29 18:32:00,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61864371] [2020-11-29 18:32:00,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-11-29 18:32:00,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:32:00,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-11-29 18:32:00,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-11-29 18:32:00,761 INFO L87 Difference]: Start difference. First operand 397 states and 408 transitions. Second operand 43 states. [2020-11-29 18:32:00,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:32:00,944 INFO L93 Difference]: Finished difference Result 485 states and 496 transitions. [2020-11-29 18:32:00,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-29 18:32:00,945 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 330 [2020-11-29 18:32:00,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:32:00,945 INFO L225 Difference]: With dead ends: 485 [2020-11-29 18:32:00,945 INFO L226 Difference]: Without dead ends: 397 [2020-11-29 18:32:00,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-11-29 18:32:00,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-11-29 18:32:00,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2020-11-29 18:32:00,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-11-29 18:32:00,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 407 transitions. [2020-11-29 18:32:00,952 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 407 transitions. Word has length 330 [2020-11-29 18:32:00,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:32:00,952 INFO L481 AbstractCegarLoop]: Abstraction has 397 states and 407 transitions. [2020-11-29 18:32:00,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-11-29 18:32:00,952 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 407 transitions. [2020-11-29 18:32:00,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-11-29 18:32:00,953 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:32:00,953 INFO L422 BasicCegarLoop]: trace histogram [56, 55, 55, 41, 41, 41, 15, 15, 15, 1, 1] [2020-11-29 18:32:01,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-11-29 18:32:01,154 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:32:01,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:32:01,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1937441689, now seen corresponding path program 30 times [2020-11-29 18:32:01,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:32:01,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744673468] [2020-11-29 18:32:01,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:32:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7955 backedges. 2365 proven. 5002 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2020-11-29 18:32:02,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744673468] [2020-11-29 18:32:02,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568018423] [2020-11-29 18:32:02,169 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:02,246 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2020-11-29 18:32:02,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:32:02,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 18:32:02,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:32:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 7955 backedges. 2723 proven. 708 refuted. 0 times theorem prover too weak. 4524 trivial. 0 not checked. [2020-11-29 18:32:03,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:32:03,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 18] total 61 [2020-11-29 18:32:03,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745155108] [2020-11-29 18:32:03,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-11-29 18:32:03,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:32:03,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-11-29 18:32:03,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2020-11-29 18:32:03,153 INFO L87 Difference]: Start difference. First operand 397 states and 407 transitions. Second operand 61 states. [2020-11-29 18:32:03,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:32:03,458 INFO L93 Difference]: Finished difference Result 498 states and 510 transitions. [2020-11-29 18:32:03,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-11-29 18:32:03,458 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 336 [2020-11-29 18:32:03,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:32:03,459 INFO L225 Difference]: With dead ends: 498 [2020-11-29 18:32:03,459 INFO L226 Difference]: Without dead ends: 410 [2020-11-29 18:32:03,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2020-11-29 18:32:03,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-11-29 18:32:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 409. [2020-11-29 18:32:03,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-11-29 18:32:03,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 417 transitions. [2020-11-29 18:32:03,465 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 417 transitions. Word has length 336 [2020-11-29 18:32:03,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:32:03,466 INFO L481 AbstractCegarLoop]: Abstraction has 409 states and 417 transitions. [2020-11-29 18:32:03,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-11-29 18:32:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 417 transitions. [2020-11-29 18:32:03,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-11-29 18:32:03,467 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:32:03,467 INFO L422 BasicCegarLoop]: trace histogram [60, 59, 59, 43, 43, 43, 17, 17, 17, 1, 1] [2020-11-29 18:32:03,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:03,668 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:32:03,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:32:03,668 INFO L82 PathProgramCache]: Analyzing trace with hash -2027199375, now seen corresponding path program 31 times [2020-11-29 18:32:03,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:32:03,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11022417] [2020-11-29 18:32:03,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:32:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9099 backedges. 2827 proven. 5504 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2020-11-29 18:32:04,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11022417] [2020-11-29 18:32:04,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620965298] [2020-11-29 18:32:04,749 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:04,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 45 conjunts are in the unsatisfiable core [2020-11-29 18:32:04,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:32:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9099 backedges. 2827 proven. 5504 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2020-11-29 18:32:04,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:32:04,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2020-11-29 18:32:04,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748360017] [2020-11-29 18:32:04,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-11-29 18:32:04,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:32:04,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-11-29 18:32:04,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-11-29 18:32:04,944 INFO L87 Difference]: Start difference. First operand 409 states and 417 transitions. Second operand 46 states. [2020-11-29 18:32:05,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:32:05,135 INFO L93 Difference]: Finished difference Result 509 states and 517 transitions. [2020-11-29 18:32:05,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-29 18:32:05,135 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 360 [2020-11-29 18:32:05,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:32:05,136 INFO L225 Difference]: With dead ends: 509 [2020-11-29 18:32:05,136 INFO L226 Difference]: Without dead ends: 409 [2020-11-29 18:32:05,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-11-29 18:32:05,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-11-29 18:32:05,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2020-11-29 18:32:05,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-11-29 18:32:05,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 416 transitions. [2020-11-29 18:32:05,142 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 416 transitions. Word has length 360 [2020-11-29 18:32:05,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:32:05,143 INFO L481 AbstractCegarLoop]: Abstraction has 409 states and 416 transitions. [2020-11-29 18:32:05,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-11-29 18:32:05,143 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 416 transitions. [2020-11-29 18:32:05,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-11-29 18:32:05,145 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:32:05,145 INFO L422 BasicCegarLoop]: trace histogram [61, 60, 60, 44, 44, 44, 17, 17, 17, 1, 1] [2020-11-29 18:32:05,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-11-29 18:32:05,364 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:32:05,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:32:05,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1254965802, now seen corresponding path program 32 times [2020-11-29 18:32:05,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:32:05,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132253743] [2020-11-29 18:32:05,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:32:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:06,496 INFO L134 CoverageAnalysis]: Checked inductivity of 9424 backedges. 2892 proven. 5764 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2020-11-29 18:32:06,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132253743] [2020-11-29 18:32:06,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200354865] [2020-11-29 18:32:06,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:06,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:32:06,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:32:06,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 46 conjunts are in the unsatisfiable core [2020-11-29 18:32:06,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:32:06,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9424 backedges. 2892 proven. 5764 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2020-11-29 18:32:06,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:32:06,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2020-11-29 18:32:06,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878534415] [2020-11-29 18:32:06,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-11-29 18:32:06,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:32:06,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-11-29 18:32:06,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-11-29 18:32:06,710 INFO L87 Difference]: Start difference. First operand 409 states and 416 transitions. Second operand 47 states. [2020-11-29 18:32:06,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:32:06,888 INFO L93 Difference]: Finished difference Result 509 states and 516 transitions. [2020-11-29 18:32:06,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-29 18:32:06,888 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 366 [2020-11-29 18:32:06,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:32:06,889 INFO L225 Difference]: With dead ends: 509 [2020-11-29 18:32:06,889 INFO L226 Difference]: Without dead ends: 409 [2020-11-29 18:32:06,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-11-29 18:32:06,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-11-29 18:32:06,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2020-11-29 18:32:06,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-11-29 18:32:06,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 415 transitions. [2020-11-29 18:32:06,895 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 415 transitions. Word has length 366 [2020-11-29 18:32:06,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:32:06,895 INFO L481 AbstractCegarLoop]: Abstraction has 409 states and 415 transitions. [2020-11-29 18:32:06,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-11-29 18:32:06,895 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 415 transitions. [2020-11-29 18:32:06,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-11-29 18:32:06,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:32:06,897 INFO L422 BasicCegarLoop]: trace histogram [62, 61, 61, 45, 45, 45, 17, 17, 17, 1, 1] [2020-11-29 18:32:07,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:07,097 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:32:07,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:32:07,097 INFO L82 PathProgramCache]: Analyzing trace with hash 221655331, now seen corresponding path program 33 times [2020-11-29 18:32:07,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:32:07,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047857840] [2020-11-29 18:32:07,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:32:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:08,298 INFO L134 CoverageAnalysis]: Checked inductivity of 9755 backedges. 2957 proven. 6030 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2020-11-29 18:32:08,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047857840] [2020-11-29 18:32:08,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735540881] [2020-11-29 18:32:08,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:08,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2020-11-29 18:32:08,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:32:08,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 18:32:08,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:32:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 9755 backedges. 3347 proven. 904 refuted. 0 times theorem prover too weak. 5504 trivial. 0 not checked. [2020-11-29 18:32:09,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:32:09,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 20] total 67 [2020-11-29 18:32:09,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557305761] [2020-11-29 18:32:09,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-11-29 18:32:09,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:32:09,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-11-29 18:32:09,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2020-11-29 18:32:09,477 INFO L87 Difference]: Start difference. First operand 409 states and 415 transitions. Second operand 67 states. [2020-11-29 18:32:09,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:32:09,857 INFO L93 Difference]: Finished difference Result 522 states and 530 transitions. [2020-11-29 18:32:09,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-11-29 18:32:09,857 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 372 [2020-11-29 18:32:09,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:32:09,858 INFO L225 Difference]: With dead ends: 522 [2020-11-29 18:32:09,858 INFO L226 Difference]: Without dead ends: 422 [2020-11-29 18:32:09,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2020-11-29 18:32:09,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-11-29 18:32:09,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 421. [2020-11-29 18:32:09,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-11-29 18:32:09,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 425 transitions. [2020-11-29 18:32:09,866 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 425 transitions. Word has length 372 [2020-11-29 18:32:09,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:32:09,866 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 425 transitions. [2020-11-29 18:32:09,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-11-29 18:32:09,866 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 425 transitions. [2020-11-29 18:32:09,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-11-29 18:32:09,867 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:32:09,868 INFO L422 BasicCegarLoop]: trace histogram [66, 65, 65, 47, 47, 47, 19, 19, 19, 1, 1] [2020-11-29 18:32:10,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,87 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:10,068 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:32:10,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:32:10,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1380327931, now seen corresponding path program 34 times [2020-11-29 18:32:10,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:32:10,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075322501] [2020-11-29 18:32:10,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:32:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 11019 backedges. 3467 proven. 6580 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2020-11-29 18:32:11,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075322501] [2020-11-29 18:32:11,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80608360] [2020-11-29 18:32:11,410 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:11,503 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:32:11,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:32:11,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 49 conjunts are in the unsatisfiable core [2020-11-29 18:32:11,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:32:11,640 INFO L134 CoverageAnalysis]: Checked inductivity of 11019 backedges. 3467 proven. 6580 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2020-11-29 18:32:11,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:32:11,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2020-11-29 18:32:11,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234191802] [2020-11-29 18:32:11,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-11-29 18:32:11,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:32:11,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-11-29 18:32:11,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-11-29 18:32:11,641 INFO L87 Difference]: Start difference. First operand 421 states and 425 transitions. Second operand 50 states. [2020-11-29 18:32:11,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:32:11,834 INFO L93 Difference]: Finished difference Result 533 states and 537 transitions. [2020-11-29 18:32:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-29 18:32:11,834 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 396 [2020-11-29 18:32:11,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:32:11,835 INFO L225 Difference]: With dead ends: 533 [2020-11-29 18:32:11,835 INFO L226 Difference]: Without dead ends: 421 [2020-11-29 18:32:11,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-11-29 18:32:11,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-11-29 18:32:11,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2020-11-29 18:32:11,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-11-29 18:32:11,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 424 transitions. [2020-11-29 18:32:11,845 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 424 transitions. Word has length 396 [2020-11-29 18:32:11,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:32:11,845 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 424 transitions. [2020-11-29 18:32:11,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-11-29 18:32:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 424 transitions. [2020-11-29 18:32:11,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-11-29 18:32:11,847 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:32:11,848 INFO L422 BasicCegarLoop]: trace histogram [67, 66, 66, 48, 48, 48, 19, 19, 19, 1, 1] [2020-11-29 18:32:12,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:12,060 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:32:12,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:32:12,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1354410188, now seen corresponding path program 35 times [2020-11-29 18:32:12,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:32:12,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914423781] [2020-11-29 18:32:12,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:32:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 11376 backedges. 3540 proven. 6864 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2020-11-29 18:32:13,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914423781] [2020-11-29 18:32:13,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863906053] [2020-11-29 18:32:13,441 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:13,566 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 50 check-sat command(s) [2020-11-29 18:32:13,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:32:13,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 50 conjunts are in the unsatisfiable core [2020-11-29 18:32:13,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:32:13,790 INFO L134 CoverageAnalysis]: Checked inductivity of 11376 backedges. 3540 proven. 6864 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2020-11-29 18:32:13,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:32:13,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2020-11-29 18:32:13,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044313235] [2020-11-29 18:32:13,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-11-29 18:32:13,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:32:13,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-11-29 18:32:13,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-11-29 18:32:13,793 INFO L87 Difference]: Start difference. First operand 421 states and 424 transitions. Second operand 51 states. [2020-11-29 18:32:14,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:32:14,074 INFO L93 Difference]: Finished difference Result 533 states and 536 transitions. [2020-11-29 18:32:14,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-29 18:32:14,075 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 402 [2020-11-29 18:32:14,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:32:14,075 INFO L225 Difference]: With dead ends: 533 [2020-11-29 18:32:14,075 INFO L226 Difference]: Without dead ends: 421 [2020-11-29 18:32:14,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-11-29 18:32:14,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-11-29 18:32:14,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2020-11-29 18:32:14,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-11-29 18:32:14,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 423 transitions. [2020-11-29 18:32:14,082 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 423 transitions. Word has length 402 [2020-11-29 18:32:14,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:32:14,083 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 423 transitions. [2020-11-29 18:32:14,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-11-29 18:32:14,083 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 423 transitions. [2020-11-29 18:32:14,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-11-29 18:32:14,084 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:32:14,084 INFO L422 BasicCegarLoop]: trace histogram [68, 67, 67, 49, 49, 49, 19, 19, 19, 1, 1] [2020-11-29 18:32:14,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:14,285 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:32:14,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:32:14,285 INFO L82 PathProgramCache]: Analyzing trace with hash -2104754771, now seen corresponding path program 36 times [2020-11-29 18:32:14,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:32:14,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804691070] [2020-11-29 18:32:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:32:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:15,708 INFO L134 CoverageAnalysis]: Checked inductivity of 11739 backedges. 3613 proven. 7154 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2020-11-29 18:32:15,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804691070] [2020-11-29 18:32:15,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918784124] [2020-11-29 18:32:15,708 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:15,804 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2020-11-29 18:32:15,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:32:15,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 18:32:15,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:32:17,068 INFO L134 CoverageAnalysis]: Checked inductivity of 11739 backedges. 3830 proven. 1045 refuted. 0 times theorem prover too weak. 6864 trivial. 0 not checked. [2020-11-29 18:32:17,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:32:17,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 21] total 72 [2020-11-29 18:32:17,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730831579] [2020-11-29 18:32:17,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-11-29 18:32:17,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:32:17,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-11-29 18:32:17,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2020-11-29 18:32:17,070 INFO L87 Difference]: Start difference. First operand 421 states and 423 transitions. Second operand 72 states. [2020-11-29 18:32:17,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:32:17,541 INFO L93 Difference]: Finished difference Result 540 states and 543 transitions. [2020-11-29 18:32:17,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-11-29 18:32:17,541 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 408 [2020-11-29 18:32:17,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:32:17,542 INFO L225 Difference]: With dead ends: 540 [2020-11-29 18:32:17,542 INFO L226 Difference]: Without dead ends: 428 [2020-11-29 18:32:17,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2020-11-29 18:32:17,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-11-29 18:32:17,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 427. [2020-11-29 18:32:17,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-11-29 18:32:17,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2020-11-29 18:32:17,549 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 408 [2020-11-29 18:32:17,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:32:17,549 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2020-11-29 18:32:17,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-11-29 18:32:17,550 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2020-11-29 18:32:17,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-11-29 18:32:17,551 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:32:17,551 INFO L422 BasicCegarLoop]: trace histogram [71, 70, 70, 51, 51, 51, 20, 20, 20, 1, 1] [2020-11-29 18:32:17,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:17,752 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:32:17,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:32:17,752 INFO L82 PathProgramCache]: Analyzing trace with hash 651241362, now seen corresponding path program 37 times [2020-11-29 18:32:17,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:32:17,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797207533] [2020-11-29 18:32:17,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:32:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12800 backedges. 0 proven. 12800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:32:20,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797207533] [2020-11-29 18:32:20,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76164379] [2020-11-29 18:32:20,687 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:20,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 72 conjunts are in the unsatisfiable core [2020-11-29 18:32:20,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:32:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 12800 backedges. 0 proven. 12800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:32:20,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:32:20,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2020-11-29 18:32:20,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12941897] [2020-11-29 18:32:20,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-11-29 18:32:20,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:32:20,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-11-29 18:32:20,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2020-11-29 18:32:20,948 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 73 states. [2020-11-29 18:32:21,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:32:21,370 INFO L93 Difference]: Finished difference Result 435 states and 435 transitions. [2020-11-29 18:32:21,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-11-29 18:32:21,370 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 426 [2020-11-29 18:32:21,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:32:21,371 INFO L225 Difference]: With dead ends: 435 [2020-11-29 18:32:21,371 INFO L226 Difference]: Without dead ends: 434 [2020-11-29 18:32:21,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2020-11-29 18:32:21,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-11-29 18:32:21,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 433. [2020-11-29 18:32:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-11-29 18:32:21,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 433 transitions. [2020-11-29 18:32:21,378 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 433 transitions. Word has length 426 [2020-11-29 18:32:21,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:32:21,379 INFO L481 AbstractCegarLoop]: Abstraction has 433 states and 433 transitions. [2020-11-29 18:32:21,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-11-29 18:32:21,379 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 433 transitions. [2020-11-29 18:32:21,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-11-29 18:32:21,380 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:32:21,381 INFO L422 BasicCegarLoop]: trace histogram [72, 71, 71, 51, 51, 51, 21, 21, 21, 1, 1] [2020-11-29 18:32:21,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:21,584 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:32:21,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:32:21,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1448509819, now seen corresponding path program 38 times [2020-11-29 18:32:21,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:32:21,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534006248] [2020-11-29 18:32:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:32:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 13123 backedges. 0 proven. 13123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:32:24,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534006248] [2020-11-29 18:32:24,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777185360] [2020-11-29 18:32:24,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:24,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:32:24,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:32:24,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 73 conjunts are in the unsatisfiable core [2020-11-29 18:32:24,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:32:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 13123 backedges. 0 proven. 13123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:32:24,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:32:24,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2020-11-29 18:32:24,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573116885] [2020-11-29 18:32:24,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-11-29 18:32:24,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:32:24,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-11-29 18:32:24,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2020-11-29 18:32:24,713 INFO L87 Difference]: Start difference. First operand 433 states and 433 transitions. Second operand 74 states. [2020-11-29 18:32:25,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:32:25,155 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2020-11-29 18:32:25,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-11-29 18:32:25,155 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 432 [2020-11-29 18:32:25,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:32:25,156 INFO L225 Difference]: With dead ends: 441 [2020-11-29 18:32:25,156 INFO L226 Difference]: Without dead ends: 440 [2020-11-29 18:32:25,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2020-11-29 18:32:25,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-11-29 18:32:25,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 439. [2020-11-29 18:32:25,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-11-29 18:32:25,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 439 transitions. [2020-11-29 18:32:25,164 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 439 transitions. Word has length 432 [2020-11-29 18:32:25,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:32:25,165 INFO L481 AbstractCegarLoop]: Abstraction has 439 states and 439 transitions. [2020-11-29 18:32:25,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-11-29 18:32:25,165 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 439 transitions. [2020-11-29 18:32:25,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2020-11-29 18:32:25,166 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:32:25,167 INFO L422 BasicCegarLoop]: trace histogram [73, 72, 72, 51, 51, 51, 22, 22, 22, 1, 1] [2020-11-29 18:32:25,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2020-11-29 18:32:25,367 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:32:25,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:32:25,368 INFO L82 PathProgramCache]: Analyzing trace with hash 955487032, now seen corresponding path program 39 times [2020-11-29 18:32:25,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:32:25,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635369535] [2020-11-29 18:32:25,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:32:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 13452 backedges. 0 proven. 13452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:32:28,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635369535] [2020-11-29 18:32:28,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295897088] [2020-11-29 18:32:28,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:28,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2020-11-29 18:32:28,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:32:28,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-29 18:32:28,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:32:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 13452 backedges. 4594 proven. 1408 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2020-11-29 18:32:28,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:32:28,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 24] total 74 [2020-11-29 18:32:28,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052892023] [2020-11-29 18:32:28,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-11-29 18:32:28,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:32:28,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-11-29 18:32:28,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2020-11-29 18:32:28,708 INFO L87 Difference]: Start difference. First operand 439 states and 439 transitions. Second operand 75 states. [2020-11-29 18:32:29,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:32:29,127 INFO L93 Difference]: Finished difference Result 447 states and 447 transitions. [2020-11-29 18:32:29,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-11-29 18:32:29,127 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 438 [2020-11-29 18:32:29,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:32:29,128 INFO L225 Difference]: With dead ends: 447 [2020-11-29 18:32:29,128 INFO L226 Difference]: Without dead ends: 446 [2020-11-29 18:32:29,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2020-11-29 18:32:29,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-11-29 18:32:29,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 445. [2020-11-29 18:32:29,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-11-29 18:32:29,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 445 transitions. [2020-11-29 18:32:29,137 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 445 transitions. Word has length 438 [2020-11-29 18:32:29,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:32:29,137 INFO L481 AbstractCegarLoop]: Abstraction has 445 states and 445 transitions. [2020-11-29 18:32:29,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-11-29 18:32:29,137 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 445 transitions. [2020-11-29 18:32:29,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2020-11-29 18:32:29,139 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:32:29,139 INFO L422 BasicCegarLoop]: trace histogram [74, 73, 73, 51, 51, 51, 23, 23, 23, 1, 1] [2020-11-29 18:32:29,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:29,339 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:32:29,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:32:29,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1571154517, now seen corresponding path program 40 times [2020-11-29 18:32:29,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:32:29,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272881994] [2020-11-29 18:32:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:32:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 13787 backedges. 0 proven. 13787 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:32:32,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272881994] [2020-11-29 18:32:32,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824639973] [2020-11-29 18:32:32,578 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:32,673 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 18:32:32,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:32:32,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 75 conjunts are in the unsatisfiable core [2020-11-29 18:32:32,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:32:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 13787 backedges. 0 proven. 13787 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:32:32,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:32:32,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2020-11-29 18:32:32,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818218907] [2020-11-29 18:32:32,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-11-29 18:32:32,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:32:32,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-11-29 18:32:32,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2020-11-29 18:32:32,936 INFO L87 Difference]: Start difference. First operand 445 states and 445 transitions. Second operand 76 states. [2020-11-29 18:32:33,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:32:33,523 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2020-11-29 18:32:33,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-11-29 18:32:33,523 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 444 [2020-11-29 18:32:33,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:32:33,524 INFO L225 Difference]: With dead ends: 453 [2020-11-29 18:32:33,524 INFO L226 Difference]: Without dead ends: 452 [2020-11-29 18:32:33,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2020-11-29 18:32:33,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-11-29 18:32:33,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 451. [2020-11-29 18:32:33,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-11-29 18:32:33,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 451 transitions. [2020-11-29 18:32:33,533 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 451 transitions. Word has length 444 [2020-11-29 18:32:33,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:32:33,533 INFO L481 AbstractCegarLoop]: Abstraction has 451 states and 451 transitions. [2020-11-29 18:32:33,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-11-29 18:32:33,533 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 451 transitions. [2020-11-29 18:32:33,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2020-11-29 18:32:33,535 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:32:33,535 INFO L422 BasicCegarLoop]: trace histogram [75, 74, 74, 51, 51, 51, 24, 24, 24, 1, 1] [2020-11-29 18:32:33,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2020-11-29 18:32:33,735 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:32:33,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:32:33,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1799113250, now seen corresponding path program 41 times [2020-11-29 18:32:33,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:32:33,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292125378] [2020-11-29 18:32:33,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:32:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:36,773 INFO L134 CoverageAnalysis]: Checked inductivity of 14128 backedges. 0 proven. 14128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:32:36,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292125378] [2020-11-29 18:32:36,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584090391] [2020-11-29 18:32:36,774 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:36,913 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 53 check-sat command(s) [2020-11-29 18:32:36,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:32:36,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 68 conjunts are in the unsatisfiable core [2020-11-29 18:32:36,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:32:41,014 INFO L134 CoverageAnalysis]: Checked inductivity of 14128 backedges. 2940 proven. 11004 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2020-11-29 18:32:41,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:32:41,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 68] total 118 [2020-11-29 18:32:41,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866350221] [2020-11-29 18:32:41,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 119 states [2020-11-29 18:32:41,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:32:41,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2020-11-29 18:32:41,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2020-11-29 18:32:41,017 INFO L87 Difference]: Start difference. First operand 451 states and 451 transitions. Second operand 119 states. [2020-11-29 18:32:41,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:32:41,768 INFO L93 Difference]: Finished difference Result 711 states and 753 transitions. [2020-11-29 18:32:41,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2020-11-29 18:32:41,768 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 450 [2020-11-29 18:32:41,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:32:41,769 INFO L225 Difference]: With dead ends: 711 [2020-11-29 18:32:41,769 INFO L226 Difference]: Without dead ends: 710 [2020-11-29 18:32:41,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2020-11-29 18:32:41,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2020-11-29 18:32:41,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 709. [2020-11-29 18:32:41,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-11-29 18:32:41,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 709 transitions. [2020-11-29 18:32:41,806 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 709 transitions. Word has length 450 [2020-11-29 18:32:41,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:32:41,806 INFO L481 AbstractCegarLoop]: Abstraction has 709 states and 709 transitions. [2020-11-29 18:32:41,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 119 states. [2020-11-29 18:32:41,807 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 709 transitions. [2020-11-29 18:32:41,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2020-11-29 18:32:41,811 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:32:41,811 INFO L422 BasicCegarLoop]: trace histogram [118, 117, 117, 67, 67, 67, 51, 51, 51, 1, 1] [2020-11-29 18:32:42,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:42,011 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:32:42,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:32:42,012 INFO L82 PathProgramCache]: Analyzing trace with hash 24194543, now seen corresponding path program 42 times [2020-11-29 18:32:42,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:32:42,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826377237] [2020-11-29 18:32:42,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:32:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:49,501 INFO L134 CoverageAnalysis]: Checked inductivity of 34467 backedges. 0 proven. 34467 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:32:49,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826377237] [2020-11-29 18:32:49,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074466089] [2020-11-29 18:32:49,501 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:49,722 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 68 check-sat command(s) [2020-11-29 18:32:49,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:32:49,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1183 conjuncts, 69 conjunts are in the unsatisfiable core [2020-11-29 18:32:49,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:32:50,077 INFO L134 CoverageAnalysis]: Checked inductivity of 34467 backedges. 13684 proven. 13333 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2020-11-29 18:32:50,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:32:50,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 69] total 119 [2020-11-29 18:32:50,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120167312] [2020-11-29 18:32:50,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 120 states [2020-11-29 18:32:50,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:32:50,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2020-11-29 18:32:50,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2020-11-29 18:32:50,081 INFO L87 Difference]: Start difference. First operand 709 states and 709 transitions. Second operand 120 states. [2020-11-29 18:32:51,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:32:51,577 INFO L93 Difference]: Finished difference Result 717 states and 717 transitions. [2020-11-29 18:32:51,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-11-29 18:32:51,577 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 708 [2020-11-29 18:32:51,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:32:51,578 INFO L225 Difference]: With dead ends: 717 [2020-11-29 18:32:51,578 INFO L226 Difference]: Without dead ends: 716 [2020-11-29 18:32:51,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 825 GetRequests, 707 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2020-11-29 18:32:51,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-11-29 18:32:51,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 715. [2020-11-29 18:32:51,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2020-11-29 18:32:51,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 715 transitions. [2020-11-29 18:32:51,598 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 715 transitions. Word has length 708 [2020-11-29 18:32:51,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:32:51,599 INFO L481 AbstractCegarLoop]: Abstraction has 715 states and 715 transitions. [2020-11-29 18:32:51,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 120 states. [2020-11-29 18:32:51,599 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 715 transitions. [2020-11-29 18:32:51,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 715 [2020-11-29 18:32:51,604 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:32:51,604 INFO L422 BasicCegarLoop]: trace histogram [119, 118, 118, 68, 68, 68, 51, 51, 51, 1, 1] [2020-11-29 18:32:51,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:51,808 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 18:32:51,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:32:51,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1454339294, now seen corresponding path program 43 times [2020-11-29 18:32:51,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:32:51,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805035866] [2020-11-29 18:32:51,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:32:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 35072 backedges. 0 proven. 35072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:32:59,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805035866] [2020-11-29 18:32:59,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228628303] [2020-11-29 18:32:59,807 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:32:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:59,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 105 conjunts are in the unsatisfiable core [2020-11-29 18:32:59,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:33:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 35072 backedges. 21428 proven. 12752 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2020-11-29 18:33:05,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:33:05,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 54] total 173 [2020-11-29 18:33:05,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11299069] [2020-11-29 18:33:05,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 174 states [2020-11-29 18:33:05,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:33:05,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2020-11-29 18:33:05,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8744, Invalid=21358, Unknown=0, NotChecked=0, Total=30102 [2020-11-29 18:33:05,232 INFO L87 Difference]: Start difference. First operand 715 states and 715 transitions. Second operand 174 states. [2020-11-29 18:33:25,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:33:25,157 INFO L93 Difference]: Finished difference Result 715 states and 715 transitions. [2020-11-29 18:33:25,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2020-11-29 18:33:25,157 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 714 [2020-11-29 18:33:25,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:33:25,158 INFO L225 Difference]: With dead ends: 715 [2020-11-29 18:33:25,158 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 18:33:25,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1039 GetRequests, 660 SyntacticMatches, 0 SemanticMatches, 379 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27827 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=39305, Invalid=105475, Unknown=0, NotChecked=0, Total=144780 [2020-11-29 18:33:25,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 18:33:25,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 18:33:25,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 18:33:25,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 18:33:25,163 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 714 [2020-11-29 18:33:25,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:33:25,164 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:33:25,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 174 states. [2020-11-29 18:33:25,164 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:33:25,164 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 18:33:25,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-11-29 18:33:25,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 18:33:26,368 WARN L193 SmtUtils]: Spent 991.00 ms on a formula simplification. DAG size of input: 647 DAG size of output: 474 [2020-11-29 18:33:30,990 WARN L193 SmtUtils]: Spent 4.61 s on a formula simplification. DAG size of input: 465 DAG size of output: 389 [2020-11-29 18:33:31,005 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-29 18:33:31,005 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 18:33:31,005 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-29 18:33:31,005 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-29 18:33:31,005 INFO L274 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-11-29 18:33:31,006 INFO L274 CegarLoopResult]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2020-11-29 18:33:31,006 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-29 18:33:31,006 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-29 18:33:31,006 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 18:33:31,006 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-29 18:33:31,006 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 18:33:31,007 INFO L277 CegarLoopResult]: At program point L26(lines 14 27) the Hoare annotation is: true [2020-11-29 18:33:31,007 INFO L274 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-11-29 18:33:31,007 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-29 18:33:31,007 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-11-29 18:33:31,007 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-11-29 18:33:31,007 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-11-29 18:33:31,010 INFO L270 CegarLoopResult]: At program point L18-2(lines 18 25) the Hoare annotation is: (let ((.cse5 (<= ULTIMATE.start_main_~y~0 27)) (.cse15 (<= ULTIMATE.start_main_~y~0 44)) (.cse13 (<= ULTIMATE.start_main_~y~0 20)) (.cse10 (<= ULTIMATE.start_main_~y~0 5)) (.cse16 (<= ULTIMATE.start_main_~y~0 36)) (.cse20 (<= ULTIMATE.start_main_~y~0 6)) (.cse23 (<= ULTIMATE.start_main_~y~0 42)) (.cse11 (<= ULTIMATE.start_main_~y~0 34)) (.cse30 (<= ULTIMATE.start_main_~y~0 8)) (.cse2 (<= ULTIMATE.start_main_~y~0 32)) (.cse6 (<= ULTIMATE.start_main_~y~0 13)) (.cse17 (<= ULTIMATE.start_main_~y~0 21)) (.cse18 (<= ULTIMATE.start_main_~y~0 50)) (.cse12 (<= ULTIMATE.start_main_~y~0 28)) (.cse31 (<= ULTIMATE.start_main_~y~0 10)) (.cse19 (<= ULTIMATE.start_main_~y~0 33)) (.cse33 (<= ULTIMATE.start_main_~y~0 39)) (.cse14 (<= ULTIMATE.start_main_~y~0 0)) (.cse8 (<= ULTIMATE.start_main_~y~0 2)) (.cse9 (<= ULTIMATE.start_main_~y~0 49)) (.cse25 (<= ULTIMATE.start_main_~y~0 35)) (.cse34 (<= ULTIMATE.start_main_~y~0 15)) (.cse41 (<= ULTIMATE.start_main_~y~0 9)) (.cse35 (<= ULTIMATE.start_main_~y~0 24)) (.cse29 (<= ULTIMATE.start_main_~y~0 46)) (.cse43 (<= ULTIMATE.start_main_~y~0 48)) (.cse27 (<= ULTIMATE.start_main_~y~0 22)) (.cse48 (<= ULTIMATE.start_main_~y~0 26)) (.cse44 (<= ULTIMATE.start_main_~y~0 17)) (.cse21 (<= ULTIMATE.start_main_~y~0 18)) (.cse46 (<= ULTIMATE.start_main_~y~0 41)) (.cse45 (<= ULTIMATE.start_main_~y~0 45)) (.cse38 (<= ULTIMATE.start_main_~y~0 1)) (.cse42 (<= ULTIMATE.start_main_~y~0 29)) (.cse51 (<= ULTIMATE.start_main_~y~0 16)) (.cse37 (<= ULTIMATE.start_main_~y~0 19)) (.cse28 (<= ULTIMATE.start_main_~y~0 31)) (.cse52 (<= ULTIMATE.start_main_~y~0 47)) (.cse40 (<= ULTIMATE.start_main_~y~0 7)) (.cse47 (<= ULTIMATE.start_main_~y~0 14)) (.cse49 (<= ULTIMATE.start_main_~y~0 12)) (.cse32 (<= ULTIMATE.start_main_~y~0 40)) (.cse7 (<= ULTIMATE.start_main_~y~0 11)) (.cse36 (<= ULTIMATE.start_main_~y~0 4)) (.cse22 (<= ULTIMATE.start_main_~y~0 38)) (.cse39 (<= ULTIMATE.start_main_~y~0 30)) (.cse4 (<= ULTIMATE.start_main_~y~0 43)) (.cse24 (<= ULTIMATE.start_main_~y~0 3)) (.cse26 (<= ULTIMATE.start_main_~y~0 25)) (.cse3 (<= ULTIMATE.start_main_~y~0 37)) (.cse1 (<= 51 ULTIMATE.start_main_~x~0)) (.cse0 (<= ULTIMATE.start_main_~x~0 51)) (.cse50 (<= ULTIMATE.start_main_~y~0 23))) (or (and (<= ULTIMATE.start_main_~y~0 51) .cse0 .cse1) (and .cse2 (<= 32 ULTIMATE.start_main_~x~0) .cse0) (and .cse0 (<= 37 ULTIMATE.start_main_~x~0) .cse3) (and (<= ULTIMATE.start_main_~x~0 59) .cse1 .cse4) (and .cse5 .cse3 (<= ULTIMATE.start_main_~x~0 75) .cse1) (and (<= 13 ULTIMATE.start_main_~x~0) .cse6 .cse0) (and .cse7 (<= ULTIMATE.start_main_~x~0 11) (<= 11 ULTIMATE.start_main_~x~0)) (and (<= 2 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 2) .cse8) (and .cse9 .cse1 (<= ULTIMATE.start_main_~x~0 53)) (and (<= 5 ULTIMATE.start_main_~x~0) .cse10 (<= ULTIMATE.start_main_~x~0 5)) (and .cse11 (<= ULTIMATE.start_main_~x~0 68) .cse3 .cse1) (and (<= 28 ULTIMATE.start_main_~x~0) .cse0 .cse12) (and .cse13 (<= 20 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 20)) (and (<= 0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 0) .cse14) (and .cse15 (<= ULTIMATE.start_main_~x~0 58) .cse1) (and (<= 27 ULTIMATE.start_main_~x~0) .cse5 .cse0) (and (<= 44 ULTIMATE.start_main_~x~0) .cse15 (<= ULTIMATE.start_main_~x~0 44)) (and (<= ULTIMATE.start_main_~x~0 66) .cse16 .cse3 .cse1) (and (<= 21 ULTIMATE.start_main_~x~0) .cse17 .cse0) (and .cse18 (<= 50 ULTIMATE.start_main_~x~0) .cse0) (and (<= ULTIMATE.start_main_~x~0 69) .cse3 .cse19 .cse1) (and .cse13 (<= ULTIMATE.start_main_~x~0 82) .cse3 .cse1) (and .cse10 .cse3 .cse1 (<= ULTIMATE.start_main_~x~0 97)) (and (<= 6 ULTIMATE.start_main_~x~0) .cse20 .cse0) (and (<= ULTIMATE.start_main_~x~0 84) .cse21 .cse3 .cse1) (and .cse22 (<= 38 ULTIMATE.start_main_~x~0) .cse0) (and .cse23 (<= 42 ULTIMATE.start_main_~x~0) .cse0) (and (<= ULTIMATE.start_main_~x~0 99) .cse24 .cse3 .cse1) (and (<= 36 ULTIMATE.start_main_~x~0) .cse16 .cse0) (and (<= ULTIMATE.start_main_~x~0 96) .cse20 .cse3 .cse1) (and .cse25 (<= ULTIMATE.start_main_~x~0 67) .cse3 .cse1) (and .cse23 (<= ULTIMATE.start_main_~x~0 60) .cse1) (and .cse26 (<= ULTIMATE.start_main_~x~0 25) (<= 25 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 80) .cse3 .cse1 .cse27) (and .cse11 (<= 34 ULTIMATE.start_main_~x~0) .cse0) (and (<= 31 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 31) .cse28) (and .cse29 (<= ULTIMATE.start_main_~x~0 56) .cse1) (and .cse30 .cse0 (<= 8 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 94) .cse30 .cse3 .cse1) (and .cse31 (<= ULTIMATE.start_main_~x~0 10) (<= 10 ULTIMATE.start_main_~x~0)) (and .cse2 (<= ULTIMATE.start_main_~x~0 70) .cse3 .cse1) (and .cse0 (<= 40 ULTIMATE.start_main_~x~0) .cse32) (and .cse33 (<= ULTIMATE.start_main_~x~0 63) .cse1) (and (<= ULTIMATE.start_main_~x~0 87) .cse34 .cse3 .cse1) (and (<= ULTIMATE.start_main_~x~0 89) .cse6 .cse3 .cse1) (and .cse17 (<= ULTIMATE.start_main_~x~0 81) .cse3 .cse1) (and (<= ULTIMATE.start_main_~x~0 52) .cse18 .cse1) (and .cse35 .cse0 (<= 24 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 74) .cse12 .cse3 .cse1) (and (<= ULTIMATE.start_main_~x~0 92) .cse31 .cse3 .cse1) (and (<= 4 ULTIMATE.start_main_~x~0) .cse36 .cse0) (and (<= 33 ULTIMATE.start_main_~x~0) .cse0 .cse19) (and (<= 19 ULTIMATE.start_main_~x~0) .cse37 .cse0) (and .cse38 .cse3 (<= ULTIMATE.start_main_~x~0 101) .cse1) (and .cse39 (<= 30 ULTIMATE.start_main_~x~0) .cse0) (and (<= ULTIMATE.start_main_~x~0 65) .cse3 .cse1) (and (<= 39 ULTIMATE.start_main_~x~0) .cse33 (<= ULTIMATE.start_main_~x~0 39)) (and .cse40 (<= ULTIMATE.start_main_~x~0 95) .cse3 .cse1) (and .cse41 .cse0 (<= 9 ULTIMATE.start_main_~x~0)) (and .cse14 .cse3 .cse1 (<= ULTIMATE.start_main_~x~0 102)) (and .cse3 (<= ULTIMATE.start_main_~x~0 100) .cse1 .cse8) (and .cse42 (<= 29 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 29)) (and .cse43 .cse0 (<= 48 ULTIMATE.start_main_~x~0)) (and .cse9 .cse0 (<= 49 ULTIMATE.start_main_~x~0)) (and (<= 35 ULTIMATE.start_main_~x~0) .cse25 .cse0) (and .cse44 .cse3 (<= ULTIMATE.start_main_~x~0 85) .cse1) (and .cse45 .cse1 (<= ULTIMATE.start_main_~x~0 57)) (and (<= 15 ULTIMATE.start_main_~x~0) .cse0 .cse34) (and .cse41 (<= ULTIMATE.start_main_~x~0 93) .cse3 .cse1) (and (<= 41 ULTIMATE.start_main_~x~0) .cse46 .cse0) (and (<= ULTIMATE.start_main_~x~0 78) .cse35 .cse3 .cse1) (and .cse29 (<= 46 ULTIMATE.start_main_~x~0) .cse0) (and (<= ULTIMATE.start_main_~x~0 88) .cse47 .cse3 .cse1) (and .cse48 (<= ULTIMATE.start_main_~x~0 76) .cse3 .cse1) (and (<= ULTIMATE.start_main_~x~0 54) .cse43 .cse1) (and .cse0 .cse49 (<= 12 ULTIMATE.start_main_~x~0)) (and (<= 22 ULTIMATE.start_main_~x~0) .cse0 .cse27) (and (<= 26 ULTIMATE.start_main_~x~0) .cse48 .cse0) (and (<= 17 ULTIMATE.start_main_~x~0) .cse44 (<= ULTIMATE.start_main_~x~0 17)) (and (<= 18 ULTIMATE.start_main_~x~0) .cse21 .cse0) (and (<= ULTIMATE.start_main_~x~0 61) .cse46 .cse1) (and .cse45 (<= 45 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 45)) (and (<= ULTIMATE.start_main_~x~0 1) .cse38 (<= 1 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 79) .cse50 .cse3 .cse1) (and (<= 16 ULTIMATE.start_main_~x~0) .cse0 .cse51) (and (<= ULTIMATE.start_main_~x~0 73) .cse42 .cse3 .cse1) (and (<= ULTIMATE.start_main_~x~0 86) .cse51 .cse3 .cse1) (and (<= ULTIMATE.start_main_~x~0 83) .cse37 .cse3 .cse1) (and .cse52 (<= ULTIMATE.start_main_~x~0 55) .cse1) (and (<= ULTIMATE.start_main_~x~0 71) .cse3 .cse1 .cse28) (and (<= 47 ULTIMATE.start_main_~x~0) .cse52 (<= ULTIMATE.start_main_~x~0 47)) (and .cse40 .cse0 (<= 7 ULTIMATE.start_main_~x~0)) (and (<= 14 ULTIMATE.start_main_~x~0) .cse47 .cse0) (and (<= ULTIMATE.start_main_~x~0 90) .cse49 .cse3 .cse1) (and (<= ULTIMATE.start_main_~x~0 62) .cse1 .cse32) (and .cse7 (<= ULTIMATE.start_main_~x~0 91) .cse3 .cse1) (and .cse36 (<= ULTIMATE.start_main_~x~0 98) .cse3 .cse1) (and (<= ULTIMATE.start_main_~x~0 64) .cse22 .cse1) (and .cse39 (<= ULTIMATE.start_main_~x~0 72) .cse3 .cse1) (and (<= 43 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 43) .cse4) (and (<= 3 ULTIMATE.start_main_~x~0) .cse24 (<= ULTIMATE.start_main_~x~0 3)) (and .cse26 (<= ULTIMATE.start_main_~x~0 77) .cse3 .cse1) (and (<= (+ ULTIMATE.start_main_~y~0 1) 0) .cse3 (<= ULTIMATE.start_main_~x~0 103) .cse1) (and (<= 23 ULTIMATE.start_main_~x~0) .cse0 .cse50))) [2020-11-29 18:33:31,011 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 25) no Hoare annotation was computed. [2020-11-29 18:33:31,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:33:31 BoogieIcfgContainer [2020-11-29 18:33:31,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:33:31,072 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:33:31,072 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:33:31,072 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:33:31,073 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:30:08" (3/4) ... [2020-11-29 18:33:31,076 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 18:33:31,103 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-29 18:33:31,104 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 18:33:31,145 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f7326ae0-5541-454f-b3d0-7636a8dae5f7/bin/uautomizer/witness.graphml [2020-11-29 18:33:31,145 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:33:31,146 INFO L168 Benchmark]: Toolchain (without parser) took 203480.14 ms. Allocated memory was 96.5 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 72.3 MB in the beginning and 832.9 MB in the end (delta: -760.7 MB). Peak memory consumption was 504.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:33:31,147 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 77.6 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:33:31,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.76 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 63.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:33:31,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.42 ms. Allocated memory is still 96.5 MB. Free memory was 63.6 MB in the beginning and 62.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:33:31,148 INFO L168 Benchmark]: Boogie Preprocessor took 22.35 ms. Allocated memory is still 96.5 MB. Free memory was 62.3 MB in the beginning and 61.5 MB in the end (delta: 780.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:33:31,148 INFO L168 Benchmark]: RCFGBuilder took 395.16 ms. Allocated memory is still 96.5 MB. Free memory was 61.3 MB in the beginning and 52.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:33:31,149 INFO L168 Benchmark]: TraceAbstraction took 202726.01 ms. Allocated memory was 96.5 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 51.9 MB in the beginning and 836.1 MB in the end (delta: -784.2 MB). Peak memory consumption was 795.7 MB. Max. memory is 16.1 GB. [2020-11-29 18:33:31,149 INFO L168 Benchmark]: Witness Printer took 73.96 ms. Allocated memory is still 1.4 GB. Free memory was 836.1 MB in the beginning and 832.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:33:31,151 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 77.6 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 219.76 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 63.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.42 ms. Allocated memory is still 96.5 MB. Free memory was 63.6 MB in the beginning and 62.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.35 ms. Allocated memory is still 96.5 MB. Free memory was 62.3 MB in the beginning and 61.5 MB in the end (delta: 780.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 395.16 ms. Allocated memory is still 96.5 MB. Free memory was 61.3 MB in the beginning and 52.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 202726.01 ms. Allocated memory was 96.5 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 51.9 MB in the beginning and 836.1 MB in the end (delta: -784.2 MB). Peak memory consumption was 795.7 MB. Max. memory is 16.1 GB. * Witness Printer took 73.96 ms. Allocated memory is still 1.4 GB. Free memory was 836.1 MB in the beginning and 832.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((y <= 51 && x <= 51) && 51 <= x) || ((y <= 32 && 32 <= x) && x <= 51)) || ((x <= 51 && 37 <= x) && y <= 37)) || ((x <= 59 && 51 <= x) && y <= 43)) || (((y <= 27 && y <= 37) && x <= 75) && 51 <= x)) || ((13 <= x && y <= 13) && x <= 51)) || ((y <= 11 && x <= 11) && 11 <= x)) || ((2 <= x && x <= 2) && y <= 2)) || ((y <= 49 && 51 <= x) && x <= 53)) || ((5 <= x && y <= 5) && x <= 5)) || (((y <= 34 && x <= 68) && y <= 37) && 51 <= x)) || ((28 <= x && x <= 51) && y <= 28)) || ((y <= 20 && 20 <= x) && x <= 20)) || (((0 <= y && 0 <= x) && x <= 0) && y <= 0)) || ((y <= 44 && x <= 58) && 51 <= x)) || ((27 <= x && y <= 27) && x <= 51)) || ((44 <= x && y <= 44) && x <= 44)) || (((x <= 66 && y <= 36) && y <= 37) && 51 <= x)) || ((21 <= x && y <= 21) && x <= 51)) || ((y <= 50 && 50 <= x) && x <= 51)) || (((x <= 69 && y <= 37) && y <= 33) && 51 <= x)) || (((y <= 20 && x <= 82) && y <= 37) && 51 <= x)) || (((y <= 5 && y <= 37) && 51 <= x) && x <= 97)) || ((6 <= x && y <= 6) && x <= 51)) || (((x <= 84 && y <= 18) && y <= 37) && 51 <= x)) || ((y <= 38 && 38 <= x) && x <= 51)) || ((y <= 42 && 42 <= x) && x <= 51)) || (((x <= 99 && y <= 3) && y <= 37) && 51 <= x)) || ((36 <= x && y <= 36) && x <= 51)) || (((x <= 96 && y <= 6) && y <= 37) && 51 <= x)) || (((y <= 35 && x <= 67) && y <= 37) && 51 <= x)) || ((y <= 42 && x <= 60) && 51 <= x)) || ((y <= 25 && x <= 25) && 25 <= x)) || (((x <= 80 && y <= 37) && 51 <= x) && y <= 22)) || ((y <= 34 && 34 <= x) && x <= 51)) || ((31 <= x && x <= 31) && y <= 31)) || ((y <= 46 && x <= 56) && 51 <= x)) || ((y <= 8 && x <= 51) && 8 <= x)) || (((x <= 94 && y <= 8) && y <= 37) && 51 <= x)) || ((y <= 10 && x <= 10) && 10 <= x)) || (((y <= 32 && x <= 70) && y <= 37) && 51 <= x)) || ((x <= 51 && 40 <= x) && y <= 40)) || ((y <= 39 && x <= 63) && 51 <= x)) || (((x <= 87 && y <= 15) && y <= 37) && 51 <= x)) || (((x <= 89 && y <= 13) && y <= 37) && 51 <= x)) || (((y <= 21 && x <= 81) && y <= 37) && 51 <= x)) || ((x <= 52 && y <= 50) && 51 <= x)) || ((y <= 24 && x <= 51) && 24 <= x)) || (((x <= 74 && y <= 28) && y <= 37) && 51 <= x)) || (((x <= 92 && y <= 10) && y <= 37) && 51 <= x)) || ((4 <= x && y <= 4) && x <= 51)) || ((33 <= x && x <= 51) && y <= 33)) || ((19 <= x && y <= 19) && x <= 51)) || (((y <= 1 && y <= 37) && x <= 101) && 51 <= x)) || ((y <= 30 && 30 <= x) && x <= 51)) || ((x <= 65 && y <= 37) && 51 <= x)) || ((39 <= x && y <= 39) && x <= 39)) || (((y <= 7 && x <= 95) && y <= 37) && 51 <= x)) || ((y <= 9 && x <= 51) && 9 <= x)) || (((y <= 0 && y <= 37) && 51 <= x) && x <= 102)) || (((y <= 37 && x <= 100) && 51 <= x) && y <= 2)) || ((y <= 29 && 29 <= x) && x <= 29)) || ((y <= 48 && x <= 51) && 48 <= x)) || ((y <= 49 && x <= 51) && 49 <= x)) || ((35 <= x && y <= 35) && x <= 51)) || (((y <= 17 && y <= 37) && x <= 85) && 51 <= x)) || ((y <= 45 && 51 <= x) && x <= 57)) || ((15 <= x && x <= 51) && y <= 15)) || (((y <= 9 && x <= 93) && y <= 37) && 51 <= x)) || ((41 <= x && y <= 41) && x <= 51)) || (((x <= 78 && y <= 24) && y <= 37) && 51 <= x)) || ((y <= 46 && 46 <= x) && x <= 51)) || (((x <= 88 && y <= 14) && y <= 37) && 51 <= x)) || (((y <= 26 && x <= 76) && y <= 37) && 51 <= x)) || ((x <= 54 && y <= 48) && 51 <= x)) || ((x <= 51 && y <= 12) && 12 <= x)) || ((22 <= x && x <= 51) && y <= 22)) || ((26 <= x && y <= 26) && x <= 51)) || ((17 <= x && y <= 17) && x <= 17)) || ((18 <= x && y <= 18) && x <= 51)) || ((x <= 61 && y <= 41) && 51 <= x)) || ((y <= 45 && 45 <= x) && x <= 45)) || ((x <= 1 && y <= 1) && 1 <= x)) || (((x <= 79 && y <= 23) && y <= 37) && 51 <= x)) || ((16 <= x && x <= 51) && y <= 16)) || (((x <= 73 && y <= 29) && y <= 37) && 51 <= x)) || (((x <= 86 && y <= 16) && y <= 37) && 51 <= x)) || (((x <= 83 && y <= 19) && y <= 37) && 51 <= x)) || ((y <= 47 && x <= 55) && 51 <= x)) || (((x <= 71 && y <= 37) && 51 <= x) && y <= 31)) || ((47 <= x && y <= 47) && x <= 47)) || ((y <= 7 && x <= 51) && 7 <= x)) || ((14 <= x && y <= 14) && x <= 51)) || (((x <= 90 && y <= 12) && y <= 37) && 51 <= x)) || ((x <= 62 && 51 <= x) && y <= 40)) || (((y <= 11 && x <= 91) && y <= 37) && 51 <= x)) || (((y <= 4 && x <= 98) && y <= 37) && 51 <= x)) || ((x <= 64 && y <= 38) && 51 <= x)) || (((y <= 30 && x <= 72) && y <= 37) && 51 <= x)) || ((43 <= x && x <= 43) && y <= 43)) || ((3 <= x && y <= 3) && x <= 3)) || (((y <= 25 && x <= 77) && y <= 37) && 51 <= x)) || (((y + 1 <= 0 && y <= 37) && x <= 103) && 51 <= x)) || ((23 <= x && x <= 51) && y <= 23) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 196.9s, OverallIterations: 101, TraceHistogramMax: 119, AutomataDifference: 50.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2741 SDtfs, 22937 SDslu, 19947 SDs, 0 SdLazy, 29045 SolverSat, 2963 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23335 GetRequests, 19776 SyntacticMatches, 0 SemanticMatches, 3559 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30594 ImplicationChecksByTransitivity, 114.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4575occurred in iteration=84, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 101 MinimizatonAttempts, 79914 StatesRemovedByMinimization, 92 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 108 NumberOfFragments, 1161 HoareAnnotationTreeSize, 2 FomulaSimplifications, 2600 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 19638 FormulaSimplificationTreeSizeReductionInter, 4.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 5.9s SatisfiabilityAnalysisTime, 108.8s InterpolantComputationTime, 40276 NumberOfCodeBlocks, 39172 NumberOfCodeBlocksAsserted, 1418 NumberOfCheckSat, 40079 ConstructedInterpolants, 0 QuantifiedInterpolants, 32042247 SizeOfPredicates, 25 NumberOfNonLiveVariables, 31946 ConjunctsInSsa, 2827 ConjunctsInUnsatCore, 197 InterpolantComputations, 6 PerfectInterpolantSequences, 207835/877826 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...