./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/rec_counter3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa --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 d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:36:14,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:36:14,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:36:14,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:36:14,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:36:14,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:36:14,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:36:14,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:36:14,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:36:14,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:36:14,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:36:14,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:36:14,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:36:14,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:36:14,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:36:14,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:36:14,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:36:14,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:36:14,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:36:14,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:36:14,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:36:14,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:36:14,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:36:14,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:36:14,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:36:14,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:36:14,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:36:14,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:36:14,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:36:14,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:36:14,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:36:14,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:36:14,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:36:14,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:36:14,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:36:14,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:36:14,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:36:14,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:36:14,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:36:14,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:36:14,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:36:14,518 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-07 01:36:14,534 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:36:14,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:36:14,535 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:36:14,535 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:36:14,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:36:14,535 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:36:14,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:36:14,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:36:14,536 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:36:14,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:36:14,536 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 01:36:14,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:36:14,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:36:14,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:36:14,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:36:14,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:36:14,537 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-07 01:36:14,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:36:14,537 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:36:14,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:36:14,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:36:14,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:36:14,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:36:14,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:36:14,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:36:14,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:36:14,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:36:14,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:36:14,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:36:14,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:36:14,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:36:14,539 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_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 [2021-12-07 01:36:14,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:36:14,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:36:14,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:36:14,726 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:36:14,727 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:36:14,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-numeric/rec_counter3.c [2021-12-07 01:36:14,777 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/data/8db5a0a29/97fec283399c4dab877dcd557a03fb3a/FLAGd6601ca50 [2021-12-07 01:36:15,186 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:36:15,187 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/sv-benchmarks/c/termination-numeric/rec_counter3.c [2021-12-07 01:36:15,190 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/data/8db5a0a29/97fec283399c4dab877dcd557a03fb3a/FLAGd6601ca50 [2021-12-07 01:36:15,200 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/data/8db5a0a29/97fec283399c4dab877dcd557a03fb3a [2021-12-07 01:36:15,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:36:15,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:36:15,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:36:15,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:36:15,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:36:15,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:36:15" (1/1) ... [2021-12-07 01:36:15,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc6d9fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:15, skipping insertion in model container [2021-12-07 01:36:15,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:36:15" (1/1) ... [2021-12-07 01:36:15,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:36:15,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:36:15,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:36:15,337 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:36:15,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:36:15,360 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:36:15,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:15 WrapperNode [2021-12-07 01:36:15,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:36:15,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:36:15,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:36:15,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:36:15,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:15" (1/1) ... [2021-12-07 01:36:15,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:15" (1/1) ... [2021-12-07 01:36:15,388 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2021-12-07 01:36:15,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:36:15,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:36:15,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:36:15,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:36:15,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:15" (1/1) ... [2021-12-07 01:36:15,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:15" (1/1) ... [2021-12-07 01:36:15,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:15" (1/1) ... [2021-12-07 01:36:15,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:15" (1/1) ... [2021-12-07 01:36:15,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:15" (1/1) ... [2021-12-07 01:36:15,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:15" (1/1) ... [2021-12-07 01:36:15,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:15" (1/1) ... [2021-12-07 01:36:15,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:36:15,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:36:15,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:36:15,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:36:15,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:15" (1/1) ... [2021-12-07 01:36:15,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:36:15,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:15,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:36:15,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:36:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2021-12-07 01:36:15,458 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2021-12-07 01:36:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:36:15,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:36:15,498 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:36:15,500 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:36:15,586 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:36:15,593 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:36:15,594 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-07 01:36:15,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:36:15 BoogieIcfgContainer [2021-12-07 01:36:15,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:36:15,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:36:15,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:36:15,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:36:15,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:36:15" (1/3) ... [2021-12-07 01:36:15,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0ac9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:36:15, skipping insertion in model container [2021-12-07 01:36:15,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:15" (2/3) ... [2021-12-07 01:36:15,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0ac9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:36:15, skipping insertion in model container [2021-12-07 01:36:15,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:36:15" (3/3) ... [2021-12-07 01:36:15,604 INFO L111 eAbstractionObserver]: Analyzing ICFG rec_counter3.c [2021-12-07 01:36:15,610 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:36:15,610 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-07 01:36:15,660 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:36:15,668 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 01:36:15,668 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-07 01:36:15,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 01:36:15,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-07 01:36:15,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:15,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:15,692 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:15,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:15,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1089293515, now seen corresponding path program 1 times [2021-12-07 01:36:15,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:15,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135439321] [2021-12-07 01:36:15,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:15,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:36:15,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:15,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135439321] [2021-12-07 01:36:15,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135439321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:36:15,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:36:15,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:36:15,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043683176] [2021-12-07 01:36:15,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:36:15,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:36:15,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:15,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:36:15,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:36:15,862 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:15,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:15,919 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2021-12-07 01:36:15,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:36:15,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-07 01:36:15,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:15,930 INFO L225 Difference]: With dead ends: 45 [2021-12-07 01:36:15,930 INFO L226 Difference]: Without dead ends: 22 [2021-12-07 01:36:15,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:36:15,937 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 40 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:15,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 50 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:36:15,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-07 01:36:15,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-12-07 01:36:15,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 19 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:36:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-12-07 01:36:15,974 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 7 [2021-12-07 01:36:15,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:15,974 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-12-07 01:36:15,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:15,975 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-12-07 01:36:15,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-07 01:36:15,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:15,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:15,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:36:15,976 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:15,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:15,977 INFO L85 PathProgramCache]: Analyzing trace with hash -591639365, now seen corresponding path program 1 times [2021-12-07 01:36:15,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:15,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473278926] [2021-12-07 01:36:15,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:15,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:36:16,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:16,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473278926] [2021-12-07 01:36:16,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473278926] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:36:16,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:36:16,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:36:16,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117489747] [2021-12-07 01:36:16,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:36:16,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:36:16,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:16,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:36:16,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:36:16,015 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:16,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:16,050 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-12-07 01:36:16,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:36:16,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-07 01:36:16,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:16,052 INFO L225 Difference]: With dead ends: 42 [2021-12-07 01:36:16,052 INFO L226 Difference]: Without dead ends: 37 [2021-12-07 01:36:16,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:36:16,054 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 29 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:16,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 79 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:36:16,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-07 01:36:16,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2021-12-07 01:36:16,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 01:36:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2021-12-07 01:36:16,062 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 8 [2021-12-07 01:36:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:16,063 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2021-12-07 01:36:16,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:16,063 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2021-12-07 01:36:16,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-07 01:36:16,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:16,064 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:16,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 01:36:16,064 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:16,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:16,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1393066815, now seen corresponding path program 1 times [2021-12-07 01:36:16,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:16,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782102294] [2021-12-07 01:36:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:16,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:16,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:36:16,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:16,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782102294] [2021-12-07 01:36:16,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782102294] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:36:16,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9528181] [2021-12-07 01:36:16,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:16,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:16,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:16,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:16,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:36:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:16,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:36:16,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:36:16,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:36:16,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:36:16,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9528181] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:36:16,261 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:36:16,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-07 01:36:16,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094625539] [2021-12-07 01:36:16,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:36:16,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 01:36:16,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:16,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 01:36:16,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-07 01:36:16,262 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:16,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:16,310 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2021-12-07 01:36:16,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 01:36:16,310 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-07 01:36:16,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:16,313 INFO L225 Difference]: With dead ends: 39 [2021-12-07 01:36:16,313 INFO L226 Difference]: Without dead ends: 38 [2021-12-07 01:36:16,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-12-07 01:36:16,315 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 117 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:16,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 57 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:36:16,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-07 01:36:16,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2021-12-07 01:36:16,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 01:36:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2021-12-07 01:36:16,325 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 13 [2021-12-07 01:36:16,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:16,325 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2021-12-07 01:36:16,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:16,326 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2021-12-07 01:36:16,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-07 01:36:16,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:16,327 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:16,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:36:16,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:16,529 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:16,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:16,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1411454171, now seen corresponding path program 1 times [2021-12-07 01:36:16,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:16,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166160870] [2021-12-07 01:36:16,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:16,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:16,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:36:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:36:16,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:16,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166160870] [2021-12-07 01:36:16,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166160870] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:36:16,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:36:16,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:36:16,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351887499] [2021-12-07 01:36:16,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:36:16,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:36:16,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:16,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:36:16,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:36:16,674 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:36:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:16,737 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2021-12-07 01:36:16,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:36:16,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-07 01:36:16,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:16,740 INFO L225 Difference]: With dead ends: 48 [2021-12-07 01:36:16,740 INFO L226 Difference]: Without dead ends: 47 [2021-12-07 01:36:16,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:36:16,744 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 13 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:16,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:36:16,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-12-07 01:36:16,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2021-12-07 01:36:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 31 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 01:36:16,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2021-12-07 01:36:16,760 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 16 [2021-12-07 01:36:16,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:16,761 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2021-12-07 01:36:16,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:36:16,762 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2021-12-07 01:36:16,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-07 01:36:16,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:16,763 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:16,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 01:36:16,764 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:16,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:16,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1411454226, now seen corresponding path program 1 times [2021-12-07 01:36:16,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:16,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49740769] [2021-12-07 01:36:16,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:16,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:16,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:36:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:36:16,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:16,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49740769] [2021-12-07 01:36:16,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49740769] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:36:16,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:36:16,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:36:16,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746866898] [2021-12-07 01:36:16,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:36:16,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:36:16,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:16,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:36:16,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:36:16,825 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:36:16,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:16,840 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2021-12-07 01:36:16,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:36:16,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-07 01:36:16,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:16,841 INFO L225 Difference]: With dead ends: 64 [2021-12-07 01:36:16,841 INFO L226 Difference]: Without dead ends: 42 [2021-12-07 01:36:16,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:36:16,843 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:16,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 81 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:36:16,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-07 01:36:16,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-12-07 01:36:16,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 35 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 01:36:16,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2021-12-07 01:36:16,852 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 16 [2021-12-07 01:36:16,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:16,852 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2021-12-07 01:36:16,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:36:16,852 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2021-12-07 01:36:16,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-07 01:36:16,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:16,853 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:16,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 01:36:16,854 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:16,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:16,854 INFO L85 PathProgramCache]: Analyzing trace with hash 805406401, now seen corresponding path program 1 times [2021-12-07 01:36:16,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:16,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863507821] [2021-12-07 01:36:16,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:16,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:16,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:36:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:36:16,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:16,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863507821] [2021-12-07 01:36:16,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863507821] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:36:16,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:36:16,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:36:16,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733733738] [2021-12-07 01:36:16,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:36:16,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:36:16,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:16,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:36:16,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:36:16,885 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:36:16,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:16,893 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2021-12-07 01:36:16,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:36:16,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-07 01:36:16,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:16,894 INFO L225 Difference]: With dead ends: 42 [2021-12-07 01:36:16,894 INFO L226 Difference]: Without dead ends: 37 [2021-12-07 01:36:16,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:36:16,896 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:16,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 34 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:36:16,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-07 01:36:16,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-12-07 01:36:16,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 01:36:16,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-12-07 01:36:16,904 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 17 [2021-12-07 01:36:16,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:16,904 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-12-07 01:36:16,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:36:16,905 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2021-12-07 01:36:16,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-07 01:36:16,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:16,906 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:16,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 01:36:16,906 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:16,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:16,907 INFO L85 PathProgramCache]: Analyzing trace with hash 719911349, now seen corresponding path program 1 times [2021-12-07 01:36:16,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:16,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904323502] [2021-12-07 01:36:16,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:16,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:16,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:36:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:16,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:16,994 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-07 01:36:16,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:16,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904323502] [2021-12-07 01:36:16,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904323502] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:36:16,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915759799] [2021-12-07 01:36:16,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:16,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:16,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:16,996 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:16,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:36:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:17,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 01:36:17,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-07 01:36:17,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:36:17,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915759799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:36:17,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:36:17,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2021-12-07 01:36:17,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927222439] [2021-12-07 01:36:17,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:36:17,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:36:17,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:17,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:36:17,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-12-07 01:36:17,082 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-07 01:36:17,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:17,114 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2021-12-07 01:36:17,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 01:36:17,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-12-07 01:36:17,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:17,115 INFO L225 Difference]: With dead ends: 37 [2021-12-07 01:36:17,115 INFO L226 Difference]: Without dead ends: 36 [2021-12-07 01:36:17,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:36:17,117 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:17,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 85 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:36:17,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-07 01:36:17,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-12-07 01:36:17,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 01:36:17,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2021-12-07 01:36:17,123 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 27 [2021-12-07 01:36:17,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:17,124 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2021-12-07 01:36:17,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-07 01:36:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2021-12-07 01:36:17,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-07 01:36:17,125 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:17,125 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:17,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 01:36:17,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:17,327 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:17,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:17,327 INFO L85 PathProgramCache]: Analyzing trace with hash 842415392, now seen corresponding path program 1 times [2021-12-07 01:36:17,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:17,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211307696] [2021-12-07 01:36:17,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:17,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:36:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:17,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-07 01:36:17,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:17,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211307696] [2021-12-07 01:36:17,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211307696] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:36:17,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:36:17,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:36:17,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056725344] [2021-12-07 01:36:17,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:36:17,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:36:17,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:17,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:36:17,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:36:17,372 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:36:17,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:17,378 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2021-12-07 01:36:17,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:36:17,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-12-07 01:36:17,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:17,379 INFO L225 Difference]: With dead ends: 36 [2021-12-07 01:36:17,379 INFO L226 Difference]: Without dead ends: 35 [2021-12-07 01:36:17,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:36:17,380 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:17,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:36:17,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-07 01:36:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-12-07 01:36:17,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 01:36:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2021-12-07 01:36:17,384 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 28 [2021-12-07 01:36:17,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:17,384 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2021-12-07 01:36:17,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:36:17,384 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2021-12-07 01:36:17,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-07 01:36:17,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:17,385 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:17,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 01:36:17,385 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:17,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:17,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2107341579, now seen corresponding path program 1 times [2021-12-07 01:36:17,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:17,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983927812] [2021-12-07 01:36:17,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:17,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:17,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:36:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:17,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:17,441 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 01:36:17,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:17,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983927812] [2021-12-07 01:36:17,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983927812] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:36:17,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890236321] [2021-12-07 01:36:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:17,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:17,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:17,443 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:17,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 01:36:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:17,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:36:17,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 01:36:17,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:36:17,592 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 01:36:17,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890236321] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:36:17,593 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:36:17,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2021-12-07 01:36:17,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754046196] [2021-12-07 01:36:17,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:36:17,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-07 01:36:17,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:17,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-07 01:36:17,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-07 01:36:17,594 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 12 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-07 01:36:17,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:17,661 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2021-12-07 01:36:17,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-07 01:36:17,662 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 12 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2021-12-07 01:36:17,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:17,662 INFO L225 Difference]: With dead ends: 78 [2021-12-07 01:36:17,662 INFO L226 Difference]: Without dead ends: 63 [2021-12-07 01:36:17,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-12-07 01:36:17,664 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 40 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:17,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 159 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:36:17,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-07 01:36:17,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2021-12-07 01:36:17,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 5 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:36:17,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2021-12-07 01:36:17,671 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 30 [2021-12-07 01:36:17,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:17,672 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2021-12-07 01:36:17,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 12 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-07 01:36:17,672 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2021-12-07 01:36:17,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-07 01:36:17,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:17,674 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:17,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 01:36:17,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:17,876 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:17,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:17,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1985419381, now seen corresponding path program 2 times [2021-12-07 01:36:17,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:17,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254199443] [2021-12-07 01:36:17,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:17,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:36:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:17,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:17,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:18,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:18,037 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 32 proven. 19 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-07 01:36:18,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:18,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254199443] [2021-12-07 01:36:18,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254199443] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:36:18,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150014820] [2021-12-07 01:36:18,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:36:18,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:18,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:18,039 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:18,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 01:36:18,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:36:18,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:36:18,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 01:36:18,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:18,139 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-07 01:36:18,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:36:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 42 proven. 7 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-07 01:36:18,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150014820] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:36:18,232 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:36:18,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 15 [2021-12-07 01:36:18,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340396780] [2021-12-07 01:36:18,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:36:18,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-07 01:36:18,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:18,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-07 01:36:18,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-07 01:36:18,233 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-07 01:36:18,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:18,320 INFO L93 Difference]: Finished difference Result 99 states and 119 transitions. [2021-12-07 01:36:18,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 01:36:18,320 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 58 [2021-12-07 01:36:18,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:18,321 INFO L225 Difference]: With dead ends: 99 [2021-12-07 01:36:18,321 INFO L226 Difference]: Without dead ends: 64 [2021-12-07 01:36:18,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-12-07 01:36:18,323 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 33 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:18,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 169 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:36:18,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-07 01:36:18,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2021-12-07 01:36:18,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 54 states have internal predecessors, (60), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 5 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:36:18,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2021-12-07 01:36:18,329 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 58 [2021-12-07 01:36:18,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:18,329 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2021-12-07 01:36:18,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-07 01:36:18,329 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2021-12-07 01:36:18,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-07 01:36:18,330 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:18,330 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:18,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 01:36:18,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-07 01:36:18,532 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:18,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:18,534 INFO L85 PathProgramCache]: Analyzing trace with hash -391809979, now seen corresponding path program 3 times [2021-12-07 01:36:18,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:18,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826980786] [2021-12-07 01:36:18,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:18,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:18,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:36:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:18,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:18,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:18,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:18,685 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-07 01:36:18,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:18,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826980786] [2021-12-07 01:36:18,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826980786] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:36:18,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696156602] [2021-12-07 01:36:18,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:36:18,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:18,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:18,686 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:18,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 01:36:18,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-07 01:36:18,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:36:18,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 01:36:18,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-07 01:36:18,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:36:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-07 01:36:18,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696156602] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:36:18,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:36:18,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 24 [2021-12-07 01:36:18,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255741712] [2021-12-07 01:36:18,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:36:18,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:36:18,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:18,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:36:18,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:36:18,933 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand has 25 states, 24 states have (on average 2.625) internal successors, (63), 21 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-07 01:36:19,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:19,135 INFO L93 Difference]: Finished difference Result 115 states and 135 transitions. [2021-12-07 01:36:19,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-07 01:36:19,135 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.625) internal successors, (63), 21 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 64 [2021-12-07 01:36:19,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:19,137 INFO L225 Difference]: With dead ends: 115 [2021-12-07 01:36:19,137 INFO L226 Difference]: Without dead ends: 100 [2021-12-07 01:36:19,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=511, Invalid=1559, Unknown=0, NotChecked=0, Total=2070 [2021-12-07 01:36:19,139 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 113 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:19,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 188 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:36:19,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-12-07 01:36:19,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 95. [2021-12-07 01:36:19,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 86 states have (on average 1.127906976744186) internal successors, (97), 86 states have internal predecessors, (97), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 01:36:19,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2021-12-07 01:36:19,152 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 64 [2021-12-07 01:36:19,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:19,152 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2021-12-07 01:36:19,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.625) internal successors, (63), 21 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-07 01:36:19,152 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2021-12-07 01:36:19,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-07 01:36:19,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:19,155 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:19,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 01:36:19,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:19,357 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:19,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:19,358 INFO L85 PathProgramCache]: Analyzing trace with hash 403858734, now seen corresponding path program 4 times [2021-12-07 01:36:19,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:19,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479662661] [2021-12-07 01:36:19,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:19,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:19,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:36:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:19,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:19,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:19,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:19,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 223 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-07 01:36:19,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:19,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479662661] [2021-12-07 01:36:19,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479662661] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:36:19,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215262542] [2021-12-07 01:36:19,638 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:36:19,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:19,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:19,638 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:19,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 01:36:19,677 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:36:19,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:36:19,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-07 01:36:19,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 124 proven. 35 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-12-07 01:36:19,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:36:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 124 proven. 35 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-12-07 01:36:20,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215262542] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:36:20,145 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:36:20,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 40 [2021-12-07 01:36:20,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642180004] [2021-12-07 01:36:20,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:36:20,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-07 01:36:20,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:20,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-07 01:36:20,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1332, Unknown=0, NotChecked=0, Total=1640 [2021-12-07 01:36:20,148 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand has 41 states, 40 states have (on average 2.225) internal successors, (89), 36 states have internal predecessors, (89), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-07 01:36:20,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:20,596 INFO L93 Difference]: Finished difference Result 182 states and 215 transitions. [2021-12-07 01:36:20,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-12-07 01:36:20,597 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.225) internal successors, (89), 36 states have internal predecessors, (89), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 93 [2021-12-07 01:36:20,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:20,599 INFO L225 Difference]: With dead ends: 182 [2021-12-07 01:36:20,600 INFO L226 Difference]: Without dead ends: 161 [2021-12-07 01:36:20,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1694, Invalid=4786, Unknown=0, NotChecked=0, Total=6480 [2021-12-07 01:36:20,603 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 297 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:20,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 166 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:36:20,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-07 01:36:20,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 149. [2021-12-07 01:36:20,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 139 states have (on average 1.143884892086331) internal successors, (159), 139 states have internal predecessors, (159), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 01:36:20,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 169 transitions. [2021-12-07 01:36:20,619 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 169 transitions. Word has length 93 [2021-12-07 01:36:20,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:20,619 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 169 transitions. [2021-12-07 01:36:20,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.225) internal successors, (89), 36 states have internal predecessors, (89), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-07 01:36:20,619 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 169 transitions. [2021-12-07 01:36:20,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-07 01:36:20,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:20,621 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:20,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 01:36:20,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:20,823 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:20,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:20,824 INFO L85 PathProgramCache]: Analyzing trace with hash -98398005, now seen corresponding path program 5 times [2021-12-07 01:36:20,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:20,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154791213] [2021-12-07 01:36:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:20,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:21,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:36:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:21,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:21,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:21,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:21,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:21,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-12-07 01:36:21,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:21,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154791213] [2021-12-07 01:36:21,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154791213] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:36:21,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368604853] [2021-12-07 01:36:21,158 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 01:36:21,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:21,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:21,159 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:21,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 01:36:21,198 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-12-07 01:36:21,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:36:21,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-07 01:36:21,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:21,512 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 405 proven. 176 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-12-07 01:36:21,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:36:22,076 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 405 proven. 176 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-12-07 01:36:22,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368604853] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:36:22,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:36:22,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 25] total 67 [2021-12-07 01:36:22,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731190055] [2021-12-07 01:36:22,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:36:22,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-12-07 01:36:22,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:22,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-12-07 01:36:22,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=882, Invalid=3674, Unknown=0, NotChecked=0, Total=4556 [2021-12-07 01:36:22,079 INFO L87 Difference]: Start difference. First operand 149 states and 169 transitions. Second operand has 68 states, 67 states have (on average 1.9850746268656716) internal successors, (133), 62 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-07 01:36:22,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:22,978 INFO L93 Difference]: Finished difference Result 328 states and 393 transitions. [2021-12-07 01:36:22,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-12-07 01:36:22,978 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 1.9850746268656716) internal successors, (133), 62 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 134 [2021-12-07 01:36:22,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:22,980 INFO L225 Difference]: With dead ends: 328 [2021-12-07 01:36:22,981 INFO L226 Difference]: Without dead ends: 289 [2021-12-07 01:36:22,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5719 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=5158, Invalid=13474, Unknown=0, NotChecked=0, Total=18632 [2021-12-07 01:36:22,987 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 818 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:22,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 189 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:36:22,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-12-07 01:36:23,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 242. [2021-12-07 01:36:23,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 231 states have (on average 1.155844155844156) internal successors, (267), 231 states have internal predecessors, (267), 3 states have call successors, (3), 2 states have call predecessors, (3), 7 states have return successors, (8), 8 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-07 01:36:23,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 278 transitions. [2021-12-07 01:36:23,004 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 278 transitions. Word has length 134 [2021-12-07 01:36:23,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:23,004 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 278 transitions. [2021-12-07 01:36:23,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 1.9850746268656716) internal successors, (133), 62 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-07 01:36:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 278 transitions. [2021-12-07 01:36:23,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-07 01:36:23,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:23,006 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:23,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 01:36:23,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-07 01:36:23,208 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:23,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:23,210 INFO L85 PathProgramCache]: Analyzing trace with hash 972887003, now seen corresponding path program 6 times [2021-12-07 01:36:23,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:23,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002206585] [2021-12-07 01:36:23,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:23,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:23,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:36:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:23,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:23,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:23,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:23,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:23,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:23,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2614 backedges. 0 proven. 1638 refuted. 0 times theorem prover too weak. 976 trivial. 0 not checked. [2021-12-07 01:36:23,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:23,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002206585] [2021-12-07 01:36:23,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002206585] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:36:23,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322227128] [2021-12-07 01:36:23,528 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 01:36:23,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:23,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:23,529 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:23,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 01:36:23,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-12-07 01:36:23,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:36:23,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-07 01:36:23,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2614 backedges. 501 proven. 1110 refuted. 0 times theorem prover too weak. 1003 trivial. 0 not checked. [2021-12-07 01:36:23,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:36:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2614 backedges. 501 proven. 1110 refuted. 0 times theorem prover too weak. 1003 trivial. 0 not checked. [2021-12-07 01:36:24,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322227128] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:36:24,404 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:36:24,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 18] total 46 [2021-12-07 01:36:24,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137396995] [2021-12-07 01:36:24,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:36:24,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-12-07 01:36:24,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:24,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-12-07 01:36:24,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1827, Unknown=0, NotChecked=0, Total=2162 [2021-12-07 01:36:24,406 INFO L87 Difference]: Start difference. First operand 242 states and 278 transitions. Second operand has 47 states, 46 states have (on average 2.5217391304347827) internal successors, (116), 37 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-07 01:36:25,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:25,321 INFO L93 Difference]: Finished difference Result 892 states and 1038 transitions. [2021-12-07 01:36:25,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-12-07 01:36:25,321 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.5217391304347827) internal successors, (116), 37 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 196 [2021-12-07 01:36:25,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:25,325 INFO L225 Difference]: With dead ends: 892 [2021-12-07 01:36:25,325 INFO L226 Difference]: Without dead ends: 603 [2021-12-07 01:36:25,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8418 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=4285, Invalid=14897, Unknown=0, NotChecked=0, Total=19182 [2021-12-07 01:36:25,332 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 407 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:25,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 181 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:36:25,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-12-07 01:36:25,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 338. [2021-12-07 01:36:25,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 323 states have (on average 1.173374613003096) internal successors, (379), 323 states have internal predecessors, (379), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 12 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-07 01:36:25,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 394 transitions. [2021-12-07 01:36:25,358 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 394 transitions. Word has length 196 [2021-12-07 01:36:25,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:25,359 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 394 transitions. [2021-12-07 01:36:25,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.5217391304347827) internal successors, (116), 37 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-07 01:36:25,359 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 394 transitions. [2021-12-07 01:36:25,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-12-07 01:36:25,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:25,365 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 62, 14, 13, 13, 13, 13, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:25,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 01:36:25,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-07 01:36:25,567 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:25,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:25,568 INFO L85 PathProgramCache]: Analyzing trace with hash 140108341, now seen corresponding path program 7 times [2021-12-07 01:36:25,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:25,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92455308] [2021-12-07 01:36:25,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:25,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:25,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:36:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:25,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:25,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:25,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:25,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:26,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:26,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:26,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:26,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:26,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:26,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7091 backedges. 3272 proven. 89 refuted. 0 times theorem prover too weak. 3730 trivial. 0 not checked. [2021-12-07 01:36:26,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:26,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92455308] [2021-12-07 01:36:26,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92455308] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:36:26,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852007619] [2021-12-07 01:36:26,074 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 01:36:26,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:26,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:26,074 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:26,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 01:36:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:26,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-07 01:36:26,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 7091 backedges. 2759 proven. 185 refuted. 0 times theorem prover too weak. 4147 trivial. 0 not checked. [2021-12-07 01:36:26,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:36:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 7091 backedges. 2772 proven. 172 refuted. 0 times theorem prover too weak. 4147 trivial. 0 not checked. [2021-12-07 01:36:27,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852007619] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:36:27,544 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:36:27,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 24] total 31 [2021-12-07 01:36:27,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350148046] [2021-12-07 01:36:27,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:36:27,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-07 01:36:27,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:27,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-07 01:36:27,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2021-12-07 01:36:27,546 INFO L87 Difference]: Start difference. First operand 338 states and 394 transitions. Second operand has 31 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 27 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-07 01:36:28,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:28,037 INFO L93 Difference]: Finished difference Result 755 states and 884 transitions. [2021-12-07 01:36:28,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-12-07 01:36:28,037 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 27 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 322 [2021-12-07 01:36:28,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:28,039 INFO L225 Difference]: With dead ends: 755 [2021-12-07 01:36:28,039 INFO L226 Difference]: Without dead ends: 456 [2021-12-07 01:36:28,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 658 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=734, Invalid=3556, Unknown=0, NotChecked=0, Total=4290 [2021-12-07 01:36:28,042 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 46 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:28,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 276 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:36:28,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-12-07 01:36:28,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 428. [2021-12-07 01:36:28,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 407 states have (on average 1.1056511056511056) internal successors, (450), 407 states have internal predecessors, (450), 3 states have call successors, (3), 2 states have call predecessors, (3), 17 states have return successors, (18), 18 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-07 01:36:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 471 transitions. [2021-12-07 01:36:28,061 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 471 transitions. Word has length 322 [2021-12-07 01:36:28,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:28,061 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 471 transitions. [2021-12-07 01:36:28,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 27 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-07 01:36:28,061 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 471 transitions. [2021-12-07 01:36:28,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-12-07 01:36:28,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:28,066 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 64, 14, 13, 13, 13, 13, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:28,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-07 01:36:28,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-07 01:36:28,266 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:28,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:28,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1823617925, now seen corresponding path program 8 times [2021-12-07 01:36:28,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:28,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965127462] [2021-12-07 01:36:28,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:28,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:28,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:36:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:28,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:28,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:28,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:28,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:28,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:28,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:28,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:28,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:28,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:28,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:28,893 INFO L134 CoverageAnalysis]: Checked inductivity of 7488 backedges. 3584 proven. 359 refuted. 0 times theorem prover too weak. 3545 trivial. 0 not checked. [2021-12-07 01:36:28,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:28,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965127462] [2021-12-07 01:36:28,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965127462] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:36:28,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267117279] [2021-12-07 01:36:28,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:36:28,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:28,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:28,895 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:28,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 01:36:28,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:36:28,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:36:28,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-07 01:36:28,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7488 backedges. 3617 proven. 324 refuted. 0 times theorem prover too weak. 3547 trivial. 0 not checked. [2021-12-07 01:36:29,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:36:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 7488 backedges. 3636 proven. 305 refuted. 0 times theorem prover too weak. 3547 trivial. 0 not checked. [2021-12-07 01:36:30,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267117279] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:36:30,548 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:36:30,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 29, 29] total 35 [2021-12-07 01:36:30,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967818108] [2021-12-07 01:36:30,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:36:30,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-07 01:36:30,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:30,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-07 01:36:30,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2021-12-07 01:36:30,550 INFO L87 Difference]: Start difference. First operand 428 states and 471 transitions. Second operand has 35 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 28 states have internal predecessors, (90), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-07 01:36:31,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:31,099 INFO L93 Difference]: Finished difference Result 682 states and 756 transitions. [2021-12-07 01:36:31,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-12-07 01:36:31,100 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 28 states have internal predecessors, (90), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 328 [2021-12-07 01:36:31,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:31,102 INFO L225 Difference]: With dead ends: 682 [2021-12-07 01:36:31,102 INFO L226 Difference]: Without dead ends: 452 [2021-12-07 01:36:31,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 680 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1098 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=925, Invalid=4927, Unknown=0, NotChecked=0, Total=5852 [2021-12-07 01:36:31,104 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 57 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:31,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 409 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:36:31,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-12-07 01:36:31,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 431. [2021-12-07 01:36:31,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 410 states have (on average 1.0951219512195123) internal successors, (449), 410 states have internal predecessors, (449), 3 states have call successors, (3), 2 states have call predecessors, (3), 17 states have return successors, (18), 18 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-07 01:36:31,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 470 transitions. [2021-12-07 01:36:31,123 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 470 transitions. Word has length 328 [2021-12-07 01:36:31,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:31,123 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 470 transitions. [2021-12-07 01:36:31,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 28 states have internal predecessors, (90), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-07 01:36:31,123 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 470 transitions. [2021-12-07 01:36:31,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-12-07 01:36:31,126 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:31,126 INFO L514 BasicCegarLoop]: trace histogram [65, 65, 65, 12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:31,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-07 01:36:31,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-07 01:36:31,328 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:31,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:31,329 INFO L85 PathProgramCache]: Analyzing trace with hash 99125038, now seen corresponding path program 9 times [2021-12-07 01:36:31,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:31,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601826246] [2021-12-07 01:36:31,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:31,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:31,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:36:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:31,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:31,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:31,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:31,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:31,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:31,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:31,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:31,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:31,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:31,876 INFO L134 CoverageAnalysis]: Checked inductivity of 7572 backedges. 4691 proven. 251 refuted. 0 times theorem prover too weak. 2630 trivial. 0 not checked. [2021-12-07 01:36:31,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:31,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601826246] [2021-12-07 01:36:31,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601826246] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:36:31,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13636356] [2021-12-07 01:36:31,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:36:31,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:31,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:31,877 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:31,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-07 01:36:31,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-12-07 01:36:31,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:36:31,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-07 01:36:31,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:32,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7572 backedges. 3565 proven. 585 refuted. 0 times theorem prover too weak. 3422 trivial. 0 not checked. [2021-12-07 01:36:32,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:36:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 7572 backedges. 3565 proven. 585 refuted. 0 times theorem prover too weak. 3422 trivial. 0 not checked. [2021-12-07 01:36:33,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13636356] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:36:33,253 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:36:33,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 20, 20] total 71 [2021-12-07 01:36:33,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733575383] [2021-12-07 01:36:33,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:36:33,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-12-07 01:36:33,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:33,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-12-07 01:36:33,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=552, Invalid=4418, Unknown=0, NotChecked=0, Total=4970 [2021-12-07 01:36:33,255 INFO L87 Difference]: Start difference. First operand 431 states and 470 transitions. Second operand has 71 states, 71 states have (on average 1.943661971830986) internal successors, (138), 68 states have internal predecessors, (138), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-07 01:36:35,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:35,743 INFO L93 Difference]: Finished difference Result 1966 states and 2250 transitions. [2021-12-07 01:36:35,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2021-12-07 01:36:35,744 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.943661971830986) internal successors, (138), 68 states have internal predecessors, (138), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 321 [2021-12-07 01:36:35,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:35,750 INFO L225 Difference]: With dead ends: 1966 [2021-12-07 01:36:35,750 INFO L226 Difference]: Without dead ends: 1577 [2021-12-07 01:36:35,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 628 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9451 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4819, Invalid=29963, Unknown=0, NotChecked=0, Total=34782 [2021-12-07 01:36:35,755 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1002 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 1847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:35,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1002 Valid, 538 Invalid, 1847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:36:35,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2021-12-07 01:36:35,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 695. [2021-12-07 01:36:35,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 668 states have (on average 1.0853293413173652) internal successors, (725), 668 states have internal predecessors, (725), 3 states have call successors, (3), 2 states have call predecessors, (3), 23 states have return successors, (24), 24 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-07 01:36:35,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 752 transitions. [2021-12-07 01:36:35,797 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 752 transitions. Word has length 321 [2021-12-07 01:36:35,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:35,797 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 752 transitions. [2021-12-07 01:36:35,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.943661971830986) internal successors, (138), 68 states have internal predecessors, (138), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-07 01:36:35,797 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 752 transitions. [2021-12-07 01:36:35,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-12-07 01:36:35,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:35,801 INFO L514 BasicCegarLoop]: trace histogram [74, 74, 74, 14, 13, 13, 13, 13, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:35,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-07 01:36:36,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-07 01:36:36,002 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:36,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:36,002 INFO L85 PathProgramCache]: Analyzing trace with hash 643752155, now seen corresponding path program 10 times [2021-12-07 01:36:36,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:36,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518215093] [2021-12-07 01:36:36,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:36,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:36,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:36:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:36,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:36,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:36,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:36,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:36,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:36,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:36,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:36,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:36,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:36,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 4434 proven. 3267 refuted. 0 times theorem prover too weak. 1952 trivial. 0 not checked. [2021-12-07 01:36:36,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:36,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518215093] [2021-12-07 01:36:36,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518215093] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:36:36,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493917399] [2021-12-07 01:36:36,767 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:36:36,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:36,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:36,768 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:36,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-07 01:36:36,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:36:36,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:36:36,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-07 01:36:36,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 4461 proven. 3240 refuted. 0 times theorem prover too weak. 1952 trivial. 0 not checked. [2021-12-07 01:36:37,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:36:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 4461 proven. 3240 refuted. 0 times theorem prover too weak. 1952 trivial. 0 not checked. [2021-12-07 01:36:39,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493917399] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:36:39,963 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:36:39,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 53 [2021-12-07 01:36:39,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088539717] [2021-12-07 01:36:39,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:36:39,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-12-07 01:36:39,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:39,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-12-07 01:36:39,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=2434, Unknown=0, NotChecked=0, Total=2756 [2021-12-07 01:36:39,965 INFO L87 Difference]: Start difference. First operand 695 states and 752 transitions. Second operand has 53 states, 53 states have (on average 2.339622641509434) internal successors, (124), 43 states have internal predecessors, (124), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-07 01:36:40,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:40,789 INFO L93 Difference]: Finished difference Result 1183 states and 1285 transitions. [2021-12-07 01:36:40,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-12-07 01:36:40,790 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.339622641509434) internal successors, (124), 43 states have internal predecessors, (124), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) Word has length 358 [2021-12-07 01:36:40,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:40,792 INFO L225 Difference]: With dead ends: 1183 [2021-12-07 01:36:40,792 INFO L226 Difference]: Without dead ends: 560 [2021-12-07 01:36:40,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 745 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9698 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=4046, Invalid=19210, Unknown=0, NotChecked=0, Total=23256 [2021-12-07 01:36:40,795 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 410 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:40,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 233 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:36:40,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-12-07 01:36:40,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 524. [2021-12-07 01:36:40,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 504 states have (on average 1.0734126984126984) internal successors, (541), 504 states have internal predecessors, (541), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 17 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 01:36:40,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 561 transitions. [2021-12-07 01:36:40,823 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 561 transitions. Word has length 358 [2021-12-07 01:36:40,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:40,824 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 561 transitions. [2021-12-07 01:36:40,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.339622641509434) internal successors, (124), 43 states have internal predecessors, (124), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-07 01:36:40,824 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 561 transitions. [2021-12-07 01:36:40,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2021-12-07 01:36:40,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:40,827 INFO L514 BasicCegarLoop]: trace histogram [80, 80, 80, 13, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:40,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-07 01:36:41,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-07 01:36:41,028 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:41,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:41,029 INFO L85 PathProgramCache]: Analyzing trace with hash 7181636, now seen corresponding path program 11 times [2021-12-07 01:36:41,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:41,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785185998] [2021-12-07 01:36:41,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:41,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:41,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:36:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:41,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:41,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:41,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:41,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:41,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:41,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:41,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:41,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:41,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:41,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:41,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 11179 backedges. 5754 proven. 559 refuted. 0 times theorem prover too weak. 4866 trivial. 0 not checked. [2021-12-07 01:36:41,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:41,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785185998] [2021-12-07 01:36:41,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785185998] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:36:41,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472312332] [2021-12-07 01:36:41,753 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 01:36:41,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:41,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:41,754 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:41,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-07 01:36:41,902 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-12-07 01:36:41,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:36:41,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-07 01:36:41,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 11179 backedges. 5738 proven. 188 refuted. 0 times theorem prover too weak. 5253 trivial. 0 not checked. [2021-12-07 01:36:42,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:36:43,077 INFO L134 CoverageAnalysis]: Checked inductivity of 11179 backedges. 5754 proven. 172 refuted. 0 times theorem prover too weak. 5253 trivial. 0 not checked. [2021-12-07 01:36:43,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472312332] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:36:43,078 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:36:43,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 29, 29] total 60 [2021-12-07 01:36:43,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844638568] [2021-12-07 01:36:43,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:36:43,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-12-07 01:36:43,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:43,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-12-07 01:36:43,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=3233, Unknown=0, NotChecked=0, Total=3540 [2021-12-07 01:36:43,080 INFO L87 Difference]: Start difference. First operand 524 states and 561 transitions. Second operand has 60 states, 60 states have (on average 2.2333333333333334) internal successors, (134), 52 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-07 01:36:44,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:44,650 INFO L93 Difference]: Finished difference Result 760 states and 824 transitions. [2021-12-07 01:36:44,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-12-07 01:36:44,650 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.2333333333333334) internal successors, (134), 52 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 377 [2021-12-07 01:36:44,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:44,652 INFO L225 Difference]: With dead ends: 760 [2021-12-07 01:36:44,652 INFO L226 Difference]: Without dead ends: 407 [2021-12-07 01:36:44,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 759 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3347 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2592, Invalid=14700, Unknown=0, NotChecked=0, Total=17292 [2021-12-07 01:36:44,654 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 136 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:44,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 601 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:36:44,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-12-07 01:36:44,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2021-12-07 01:36:44,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 391 states have (on average 1.0716112531969308) internal successors, (419), 391 states have internal predecessors, (419), 3 states have call successors, (3), 2 states have call predecessors, (3), 12 states have return successors, (13), 13 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-07 01:36:44,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 435 transitions. [2021-12-07 01:36:44,675 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 435 transitions. Word has length 377 [2021-12-07 01:36:44,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:44,676 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 435 transitions. [2021-12-07 01:36:44,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.2333333333333334) internal successors, (134), 52 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-07 01:36:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 435 transitions. [2021-12-07 01:36:44,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2021-12-07 01:36:44,678 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:44,678 INFO L514 BasicCegarLoop]: trace histogram [82, 82, 82, 15, 14, 14, 14, 14, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:44,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-07 01:36:44,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:44,879 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:44,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:44,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1895808066, now seen corresponding path program 12 times [2021-12-07 01:36:44,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:44,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96590602] [2021-12-07 01:36:44,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:44,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:45,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:36:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:45,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:45,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:45,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:45,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:45,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:45,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:45,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:45,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:45,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:45,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:45,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:45,591 INFO L134 CoverageAnalysis]: Checked inductivity of 11815 backedges. 7691 proven. 1160 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2021-12-07 01:36:45,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:45,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96590602] [2021-12-07 01:36:45,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96590602] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:36:45,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63612434] [2021-12-07 01:36:45,591 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 01:36:45,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:45,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:45,592 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:45,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-07 01:36:45,732 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2021-12-07 01:36:45,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:36:45,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-07 01:36:45,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 11815 backedges. 5622 proven. 2141 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2021-12-07 01:36:46,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:36:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 11815 backedges. 5622 proven. 2141 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2021-12-07 01:36:47,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63612434] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:36:47,456 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:36:47,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 25, 25] total 96 [2021-12-07 01:36:47,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893852412] [2021-12-07 01:36:47,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:36:47,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-07 01:36:47,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:47,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-07 01:36:47,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=833, Invalid=8287, Unknown=0, NotChecked=0, Total=9120 [2021-12-07 01:36:47,459 INFO L87 Difference]: Start difference. First operand 407 states and 435 transitions. Second operand has 96 states, 96 states have (on average 2.1666666666666665) internal successors, (208), 82 states have internal predecessors, (208), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-07 01:36:53,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:53,805 INFO L93 Difference]: Finished difference Result 969 states and 1072 transitions. [2021-12-07 01:36:53,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2021-12-07 01:36:53,806 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.1666666666666665) internal successors, (208), 82 states have internal predecessors, (208), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 393 [2021-12-07 01:36:53,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:53,808 INFO L225 Difference]: With dead ends: 969 [2021-12-07 01:36:53,808 INFO L226 Difference]: Without dead ends: 625 [2021-12-07 01:36:53,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1115 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41091 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=19149, Invalid=105107, Unknown=0, NotChecked=0, Total=124256 [2021-12-07 01:36:53,815 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 916 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 2101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:53,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 681 Invalid, 2101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1772 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 01:36:53,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-12-07 01:36:53,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 503. [2021-12-07 01:36:53,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 485 states have (on average 1.0762886597938144) internal successors, (522), 485 states have internal predecessors, (522), 3 states have call successors, (3), 2 states have call predecessors, (3), 14 states have return successors, (15), 15 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-07 01:36:53,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 540 transitions. [2021-12-07 01:36:53,842 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 540 transitions. Word has length 393 [2021-12-07 01:36:53,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:53,842 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 540 transitions. [2021-12-07 01:36:53,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.1666666666666665) internal successors, (208), 82 states have internal predecessors, (208), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-07 01:36:53,843 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 540 transitions. [2021-12-07 01:36:53,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2021-12-07 01:36:53,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:53,846 INFO L514 BasicCegarLoop]: trace histogram [111, 111, 111, 15, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:53,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-07 01:36:54,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:54,047 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:36:54,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:54,049 INFO L85 PathProgramCache]: Analyzing trace with hash -356037717, now seen corresponding path program 13 times [2021-12-07 01:36:54,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:54,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127095761] [2021-12-07 01:36:54,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:54,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:54,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:36:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:54,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:54,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:54,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:54,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:54,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:54,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:54,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:54,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:54,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:54,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:55,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:55,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:55,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:36:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:55,127 INFO L134 CoverageAnalysis]: Checked inductivity of 20885 backedges. 13438 proven. 1579 refuted. 0 times theorem prover too weak. 5868 trivial. 0 not checked. [2021-12-07 01:36:55,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:55,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127095761] [2021-12-07 01:36:55,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127095761] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:36:55,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257761431] [2021-12-07 01:36:55,128 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 01:36:55,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:55,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:55,128 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:55,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-07 01:36:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:55,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-07 01:36:55,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:55,640 INFO L134 CoverageAnalysis]: Checked inductivity of 20885 backedges. 13495 proven. 1520 refuted. 0 times theorem prover too weak. 5870 trivial. 0 not checked. [2021-12-07 01:36:55,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:36:59,751 INFO L134 CoverageAnalysis]: Checked inductivity of 20885 backedges. 13548 proven. 1467 refuted. 0 times theorem prover too weak. 5870 trivial. 0 not checked. [2021-12-07 01:36:59,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257761431] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:36:59,752 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:36:59,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 49, 49] total 55 [2021-12-07 01:36:59,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026726324] [2021-12-07 01:36:59,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:36:59,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-12-07 01:36:59,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:59,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-12-07 01:36:59,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=2646, Unknown=0, NotChecked=0, Total=2970 [2021-12-07 01:36:59,755 INFO L87 Difference]: Start difference. First operand 503 states and 540 transitions. Second operand has 55 states, 55 states have (on average 2.4363636363636365) internal successors, (134), 44 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-07 01:37:01,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:37:01,592 INFO L93 Difference]: Finished difference Result 769 states and 842 transitions. [2021-12-07 01:37:01,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-12-07 01:37:01,592 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.4363636363636365) internal successors, (134), 44 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) Word has length 492 [2021-12-07 01:37:01,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:37:01,595 INFO L225 Difference]: With dead ends: 769 [2021-12-07 01:37:01,595 INFO L226 Difference]: Without dead ends: 506 [2021-12-07 01:37:01,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1173 GetRequests, 1013 SyntacticMatches, 2 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5899 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4089, Invalid=21351, Unknown=0, NotChecked=0, Total=25440 [2021-12-07 01:37:01,597 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 74 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:37:01,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 806 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 01:37:01,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-12-07 01:37:01,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2021-12-07 01:37:01,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 488 states have (on average 1.069672131147541) internal successors, (522), 488 states have internal predecessors, (522), 3 states have call successors, (3), 2 states have call predecessors, (3), 14 states have return successors, (15), 15 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-07 01:37:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 540 transitions. [2021-12-07 01:37:01,624 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 540 transitions. Word has length 492 [2021-12-07 01:37:01,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:37:01,625 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 540 transitions. [2021-12-07 01:37:01,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.4363636363636365) internal successors, (134), 44 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-07 01:37:01,625 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 540 transitions. [2021-12-07 01:37:01,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2021-12-07 01:37:01,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:37:01,633 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 112, 17, 16, 16, 16, 16, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1] [2021-12-07 01:37:01,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-07 01:37:01,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-07 01:37:01,835 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:37:01,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:37:01,836 INFO L85 PathProgramCache]: Analyzing trace with hash 237207140, now seen corresponding path program 14 times [2021-12-07 01:37:01,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:37:01,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30165566] [2021-12-07 01:37:01,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:37:01,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:37:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:02,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:37:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:02,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:02,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:02,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:02,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:02,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:02,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:02,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:02,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:02,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:02,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:02,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:02,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:02,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:02,931 INFO L134 CoverageAnalysis]: Checked inductivity of 21381 backedges. 10119 proven. 6875 refuted. 0 times theorem prover too weak. 4387 trivial. 0 not checked. [2021-12-07 01:37:02,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:37:02,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30165566] [2021-12-07 01:37:02,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30165566] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:37:02,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949334702] [2021-12-07 01:37:02,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:37:02,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:37:02,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:37:02,932 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:37:02,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-07 01:37:03,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:37:03,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:37:03,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-07 01:37:03,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:37:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 21381 backedges. 10152 proven. 6842 refuted. 0 times theorem prover too weak. 4387 trivial. 0 not checked. [2021-12-07 01:37:03,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:37:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 21381 backedges. 10152 proven. 6842 refuted. 0 times theorem prover too weak. 4387 trivial. 0 not checked. [2021-12-07 01:37:09,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949334702] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:37:09,126 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:37:09,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 59] total 63 [2021-12-07 01:37:09,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984470031] [2021-12-07 01:37:09,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:37:09,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-12-07 01:37:09,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:37:09,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-12-07 01:37:09,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=445, Invalid=3461, Unknown=0, NotChecked=0, Total=3906 [2021-12-07 01:37:09,128 INFO L87 Difference]: Start difference. First operand 506 states and 540 transitions. Second operand has 63 states, 63 states have (on average 2.3174603174603177) internal successors, (146), 51 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-07 01:37:10,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:37:10,492 INFO L93 Difference]: Finished difference Result 811 states and 880 transitions. [2021-12-07 01:37:10,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2021-12-07 01:37:10,493 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.3174603174603177) internal successors, (146), 51 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) Word has length 505 [2021-12-07 01:37:10,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:37:10,495 INFO L225 Difference]: With dead ends: 811 [2021-12-07 01:37:10,495 INFO L226 Difference]: Without dead ends: 545 [2021-12-07 01:37:10,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1253 GetRequests, 1048 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19097 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=7627, Invalid=35015, Unknown=0, NotChecked=0, Total=42642 [2021-12-07 01:37:10,499 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 410 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:37:10,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 251 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:37:10,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-12-07 01:37:10,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2021-12-07 01:37:10,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 526 states have (on average 1.064638783269962) internal successors, (560), 526 states have internal predecessors, (560), 3 states have call successors, (3), 2 states have call predecessors, (3), 15 states have return successors, (16), 16 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-07 01:37:10,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 579 transitions. [2021-12-07 01:37:10,529 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 579 transitions. Word has length 505 [2021-12-07 01:37:10,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:37:10,529 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 579 transitions. [2021-12-07 01:37:10,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.3174603174603177) internal successors, (146), 51 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-07 01:37:10,530 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 579 transitions. [2021-12-07 01:37:10,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2021-12-07 01:37:10,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:37:10,543 INFO L514 BasicCegarLoop]: trace histogram [122, 122, 122, 18, 17, 17, 17, 17, 15, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1] [2021-12-07 01:37:10,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-07 01:37:10,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-07 01:37:10,743 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:37:10,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:37:10,744 INFO L85 PathProgramCache]: Analyzing trace with hash 259538881, now seen corresponding path program 15 times [2021-12-07 01:37:10,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:37:10,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277591018] [2021-12-07 01:37:10,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:37:10,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:37:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:10,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:37:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:11,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:11,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:11,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:11,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:11,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:11,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:11,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:11,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:11,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:11,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:11,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:11,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:11,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:11,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:11,981 INFO L134 CoverageAnalysis]: Checked inductivity of 25303 backedges. 16970 proven. 2089 refuted. 0 times theorem prover too weak. 6244 trivial. 0 not checked. [2021-12-07 01:37:11,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:37:11,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277591018] [2021-12-07 01:37:11,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277591018] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:37:11,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753517978] [2021-12-07 01:37:11,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:37:11,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:37:11,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:37:11,982 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:37:11,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-07 01:37:12,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-12-07 01:37:12,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:37:12,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-07 01:37:12,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:37:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 25303 backedges. 12241 proven. 5293 refuted. 0 times theorem prover too weak. 7769 trivial. 0 not checked. [2021-12-07 01:37:13,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:37:15,205 INFO L134 CoverageAnalysis]: Checked inductivity of 25303 backedges. 12241 proven. 5293 refuted. 0 times theorem prover too weak. 7769 trivial. 0 not checked. [2021-12-07 01:37:15,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753517978] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:37:15,205 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:37:15,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 32, 32] total 120 [2021-12-07 01:37:15,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166979977] [2021-12-07 01:37:15,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:37:15,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2021-12-07 01:37:15,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:37:15,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-12-07 01:37:15,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1238, Invalid=13042, Unknown=0, NotChecked=0, Total=14280 [2021-12-07 01:37:15,208 INFO L87 Difference]: Start difference. First operand 545 states and 579 transitions. Second operand has 120 states, 120 states have (on average 2.15) internal successors, (258), 102 states have internal predecessors, (258), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-07 01:37:28,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:37:28,225 INFO L93 Difference]: Finished difference Result 1529 states and 1691 transitions. [2021-12-07 01:37:28,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 411 states. [2021-12-07 01:37:28,226 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.15) internal successors, (258), 102 states have internal predecessors, (258), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) Word has length 546 [2021-12-07 01:37:28,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:37:28,229 INFO L225 Difference]: With dead ends: 1529 [2021-12-07 01:37:28,229 INFO L226 Difference]: Without dead ends: 1050 [2021-12-07 01:37:28,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1586 GetRequests, 1063 SyntacticMatches, 0 SemanticMatches, 523 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99796 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=42145, Invalid=232955, Unknown=0, NotChecked=0, Total=275100 [2021-12-07 01:37:28,244 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 1773 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 2398 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1773 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 2967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 2398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:37:28,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1773 Valid, 682 Invalid, 2967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 2398 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 01:37:28,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2021-12-07 01:37:28,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 716. [2021-12-07 01:37:28,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 694 states have (on average 1.0734870317002883) internal successors, (745), 694 states have internal predecessors, (745), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 19 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-07 01:37:28,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 767 transitions. [2021-12-07 01:37:28,289 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 767 transitions. Word has length 546 [2021-12-07 01:37:28,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:37:28,290 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 767 transitions. [2021-12-07 01:37:28,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 2.15) internal successors, (258), 102 states have internal predecessors, (258), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-07 01:37:28,290 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 767 transitions. [2021-12-07 01:37:28,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2021-12-07 01:37:28,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:37:28,297 INFO L514 BasicCegarLoop]: trace histogram [174, 174, 174, 19, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1] [2021-12-07 01:37:28,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-07 01:37:28,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:37:28,497 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:37:28,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:37:28,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1060068548, now seen corresponding path program 16 times [2021-12-07 01:37:28,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:37:28,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255994002] [2021-12-07 01:37:28,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:37:28,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:37:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:28,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:37:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:29,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:29,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:29,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:29,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:30,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:30,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:30,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:30,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:30,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:30,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:30,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:30,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:30,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:30,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:30,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:30,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:30,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:30,392 INFO L134 CoverageAnalysis]: Checked inductivity of 49987 backedges. 29585 proven. 593 refuted. 0 times theorem prover too weak. 19809 trivial. 0 not checked. [2021-12-07 01:37:30,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:37:30,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255994002] [2021-12-07 01:37:30,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255994002] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:37:30,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099747597] [2021-12-07 01:37:30,393 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:37:30,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:37:30,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:37:30,394 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:37:30,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-07 01:37:30,694 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:37:30,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:37:30,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-07 01:37:30,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:37:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 49987 backedges. 31312 proven. 2628 refuted. 0 times theorem prover too weak. 16047 trivial. 0 not checked. [2021-12-07 01:37:31,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:37:40,403 INFO L134 CoverageAnalysis]: Checked inductivity of 49987 backedges. 31388 proven. 2552 refuted. 0 times theorem prover too weak. 16047 trivial. 0 not checked. [2021-12-07 01:37:40,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099747597] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:37:40,403 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:37:40,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 59, 59] total 80 [2021-12-07 01:37:40,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927814671] [2021-12-07 01:37:40,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:37:40,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-12-07 01:37:40,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:37:40,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-12-07 01:37:40,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=5755, Unknown=0, NotChecked=0, Total=6320 [2021-12-07 01:37:40,406 INFO L87 Difference]: Start difference. First operand 716 states and 767 transitions. Second operand has 80 states, 80 states have (on average 2.2625) internal successors, (181), 69 states have internal predecessors, (181), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-07 01:37:44,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:37:44,540 INFO L93 Difference]: Finished difference Result 1117 states and 1219 transitions. [2021-12-07 01:37:44,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2021-12-07 01:37:44,540 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.2625) internal successors, (181), 69 states have internal predecessors, (181), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) Word has length 725 [2021-12-07 01:37:44,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:37:44,543 INFO L225 Difference]: With dead ends: 1117 [2021-12-07 01:37:44,543 INFO L226 Difference]: Without dead ends: 722 [2021-12-07 01:37:44,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1713 GetRequests, 1457 SyntacticMatches, 3 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19000 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=9239, Invalid=55531, Unknown=0, NotChecked=0, Total=64770 [2021-12-07 01:37:44,547 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 122 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 5433 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 5448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 5433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:37:44,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 731 Invalid, 5448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 5433 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-07 01:37:44,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2021-12-07 01:37:44,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2021-12-07 01:37:44,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 700 states have (on average 1.0671428571428572) internal successors, (747), 700 states have internal predecessors, (747), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 19 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-07 01:37:44,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 769 transitions. [2021-12-07 01:37:44,603 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 769 transitions. Word has length 725 [2021-12-07 01:37:44,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:37:44,604 INFO L470 AbstractCegarLoop]: Abstraction has 722 states and 769 transitions. [2021-12-07 01:37:44,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.2625) internal successors, (181), 69 states have internal predecessors, (181), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-07 01:37:44,604 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 769 transitions. [2021-12-07 01:37:44,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2021-12-07 01:37:44,609 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:37:44,609 INFO L514 BasicCegarLoop]: trace histogram [176, 176, 176, 19, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1] [2021-12-07 01:37:44,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-07 01:37:44,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:37:44,810 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:37:44,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:37:44,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1041214274, now seen corresponding path program 17 times [2021-12-07 01:37:44,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:37:44,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617471433] [2021-12-07 01:37:44,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:37:44,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:37:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:45,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:37:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:45,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:45,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:45,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:46,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:46,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:46,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:46,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:46,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:46,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:46,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:46,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:46,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:46,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:46,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:46,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:47,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:47,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:47,096 INFO L134 CoverageAnalysis]: Checked inductivity of 51070 backedges. 34566 proven. 3418 refuted. 0 times theorem prover too weak. 13086 trivial. 0 not checked. [2021-12-07 01:37:47,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:37:47,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617471433] [2021-12-07 01:37:47,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617471433] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:37:47,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578480089] [2021-12-07 01:37:47,097 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 01:37:47,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:37:47,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:37:47,098 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:37:47,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-07 01:37:47,533 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-12-07 01:37:47,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:37:47,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-07 01:37:47,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:37:48,406 INFO L134 CoverageAnalysis]: Checked inductivity of 51070 backedges. 30560 proven. 701 refuted. 0 times theorem prover too weak. 19809 trivial. 0 not checked. [2021-12-07 01:37:48,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:37:50,162 INFO L134 CoverageAnalysis]: Checked inductivity of 51070 backedges. 30594 proven. 667 refuted. 0 times theorem prover too weak. 19809 trivial. 0 not checked. [2021-12-07 01:37:50,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578480089] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:37:50,163 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:37:50,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 53, 53] total 114 [2021-12-07 01:37:50,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915094651] [2021-12-07 01:37:50,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:37:50,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2021-12-07 01:37:50,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:37:50,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-12-07 01:37:50,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=11882, Unknown=0, NotChecked=0, Total=12882 [2021-12-07 01:37:50,165 INFO L87 Difference]: Start difference. First operand 722 states and 769 transitions. Second operand has 114 states, 114 states have (on average 2.0701754385964914) internal successors, (236), 100 states have internal predecessors, (236), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-07 01:37:58,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:37:58,264 INFO L93 Difference]: Finished difference Result 1081 states and 1173 transitions. [2021-12-07 01:37:58,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2021-12-07 01:37:58,265 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.0701754385964914) internal successors, (236), 100 states have internal predecessors, (236), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 731 [2021-12-07 01:37:58,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:37:58,268 INFO L225 Difference]: With dead ends: 1081 [2021-12-07 01:37:58,268 INFO L226 Difference]: Without dead ends: 725 [2021-12-07 01:37:58,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1785 GetRequests, 1455 SyntacticMatches, 2 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24715 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=15141, Invalid=93429, Unknown=0, NotChecked=0, Total=108570 [2021-12-07 01:37:58,276 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 241 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 7099 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 7163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 7099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:37:58,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 844 Invalid, 7163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 7099 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-07 01:37:58,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-12-07 01:37:58,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 725. [2021-12-07 01:37:58,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 703 states have (on average 1.0611664295874823) internal successors, (746), 703 states have internal predecessors, (746), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 19 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-07 01:37:58,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 768 transitions. [2021-12-07 01:37:58,325 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 768 transitions. Word has length 731 [2021-12-07 01:37:58,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:37:58,326 INFO L470 AbstractCegarLoop]: Abstraction has 725 states and 768 transitions. [2021-12-07 01:37:58,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 2.0701754385964914) internal successors, (236), 100 states have internal predecessors, (236), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-07 01:37:58,326 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 768 transitions. [2021-12-07 01:37:58,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2021-12-07 01:37:58,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:37:58,332 INFO L514 BasicCegarLoop]: trace histogram [177, 177, 177, 21, 20, 20, 20, 20, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1] [2021-12-07 01:37:58,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-07 01:37:58,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-07 01:37:58,533 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:37:58,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:37:58,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1725113589, now seen corresponding path program 18 times [2021-12-07 01:37:58,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:37:58,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740201170] [2021-12-07 01:37:58,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:37:58,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:37:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:58,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:37:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:59,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:59,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:59,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:59,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:37:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:00,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:00,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:00,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:00,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:00,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:00,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:00,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:00,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:00,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:00,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:00,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:00,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:00,900 INFO L134 CoverageAnalysis]: Checked inductivity of 51805 backedges. 24640 proven. 17087 refuted. 0 times theorem prover too weak. 10078 trivial. 0 not checked. [2021-12-07 01:38:00,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:38:00,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740201170] [2021-12-07 01:38:00,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740201170] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:38:00,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832846247] [2021-12-07 01:38:00,901 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 01:38:00,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:38:00,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:38:00,901 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:38:00,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-07 01:38:01,351 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2021-12-07 01:38:01,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:38:01,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 1684 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-07 01:38:01,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:38:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 51805 backedges. 24105 proven. 16069 refuted. 0 times theorem prover too weak. 11631 trivial. 0 not checked. [2021-12-07 01:38:02,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:38:06,912 INFO L134 CoverageAnalysis]: Checked inductivity of 51805 backedges. 24105 proven. 16069 refuted. 0 times theorem prover too weak. 11631 trivial. 0 not checked. [2021-12-07 01:38:06,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832846247] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:38:06,912 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:38:06,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 42, 42] total 151 [2021-12-07 01:38:06,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80396369] [2021-12-07 01:38:06,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:38:06,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2021-12-07 01:38:06,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:38:06,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2021-12-07 01:38:06,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2353, Invalid=20297, Unknown=0, NotChecked=0, Total=22650 [2021-12-07 01:38:06,916 INFO L87 Difference]: Start difference. First operand 725 states and 768 transitions. Second operand has 151 states, 151 states have (on average 2.165562913907285) internal successors, (327), 128 states have internal predecessors, (327), 1 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (25), 25 states have call predecessors, (25), 1 states have call successors, (25) [2021-12-07 01:38:25,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:38:25,499 INFO L93 Difference]: Finished difference Result 2698 states and 2986 transitions. [2021-12-07 01:38:25,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 661 states. [2021-12-07 01:38:25,500 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 2.165562913907285) internal successors, (327), 128 states have internal predecessors, (327), 1 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (25), 25 states have call predecessors, (25), 1 states have call successors, (25) Word has length 744 [2021-12-07 01:38:25,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:38:25,505 INFO L225 Difference]: With dead ends: 2698 [2021-12-07 01:38:25,505 INFO L226 Difference]: Without dead ends: 1903 [2021-12-07 01:38:25,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2201 GetRequests, 1451 SyntacticMatches, 0 SemanticMatches, 750 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294913 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=128139, Invalid=436613, Unknown=0, NotChecked=0, Total=564752 [2021-12-07 01:38:25,533 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 3742 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 1462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3742 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 2262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1462 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:38:25,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3742 Valid, 313 Invalid, 2262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1462 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 01:38:25,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2021-12-07 01:38:25,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1118. [2021-12-07 01:38:25,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 1090 states have (on average 1.0779816513761469) internal successors, (1175), 1090 states have internal predecessors, (1175), 3 states have call successors, (3), 2 states have call predecessors, (3), 24 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-07 01:38:25,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1203 transitions. [2021-12-07 01:38:25,617 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1203 transitions. Word has length 744 [2021-12-07 01:38:25,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:38:25,617 INFO L470 AbstractCegarLoop]: Abstraction has 1118 states and 1203 transitions. [2021-12-07 01:38:25,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 151 states have (on average 2.165562913907285) internal successors, (327), 128 states have internal predecessors, (327), 1 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (25), 25 states have call predecessors, (25), 1 states have call successors, (25) [2021-12-07 01:38:25,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1203 transitions. [2021-12-07 01:38:25,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1149 [2021-12-07 01:38:25,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:38:25,628 INFO L514 BasicCegarLoop]: trace histogram [293, 293, 293, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2021-12-07 01:38:25,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-07 01:38:25,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-07 01:38:25,828 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:38:25,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:38:25,829 INFO L85 PathProgramCache]: Analyzing trace with hash -705867861, now seen corresponding path program 19 times [2021-12-07 01:38:25,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:38:25,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479671542] [2021-12-07 01:38:25,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:38:25,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:38:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:26,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:38:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:27,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:28,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:28,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:29,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:29,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:38:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:30,945 INFO L134 CoverageAnalysis]: Checked inductivity of 138427 backedges. 78662 proven. 818 refuted. 0 times theorem prover too weak. 58947 trivial. 0 not checked. [2021-12-07 01:38:30,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:38:30,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479671542] [2021-12-07 01:38:30,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479671542] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:38:30,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347785367] [2021-12-07 01:38:30,945 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 01:38:30,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:38:30,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:38:30,946 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:38:30,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-07 01:38:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:38:31,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 2616 conjuncts, 69 conjunts are in the unsatisfiable core [2021-12-07 01:38:31,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:38:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 138427 backedges. 76418 proven. 4172 refuted. 0 times theorem prover too weak. 57837 trivial. 0 not checked. [2021-12-07 01:38:32,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:38:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 138427 backedges. 76521 proven. 4069 refuted. 0 times theorem prover too weak. 57837 trivial. 0 not checked. [2021-12-07 01:38:52,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347785367] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:38:52,687 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:38:52,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 69, 69] total 94 [2021-12-07 01:38:52,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434274006] [2021-12-07 01:38:52,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:38:52,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-12-07 01:38:52,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:38:52,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-12-07 01:38:52,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=758, Invalid=7984, Unknown=0, NotChecked=0, Total=8742 [2021-12-07 01:38:52,691 INFO L87 Difference]: Start difference. First operand 1118 states and 1203 transitions. Second operand has 94 states, 94 states have (on average 2.223404255319149) internal successors, (209), 81 states have internal predecessors, (209), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-07 01:38:59,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:38:59,349 INFO L93 Difference]: Finished difference Result 1828 states and 1999 transitions. [2021-12-07 01:38:59,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2021-12-07 01:38:59,350 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.223404255319149) internal successors, (209), 81 states have internal predecessors, (209), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) Word has length 1148 [2021-12-07 01:38:59,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:38:59,353 INFO L225 Difference]: With dead ends: 1828 [2021-12-07 01:38:59,353 INFO L226 Difference]: Without dead ends: 1127 [2021-12-07 01:38:59,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2639 GetRequests, 2311 SyntacticMatches, 3 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32174 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=14936, Invalid=91666, Unknown=0, NotChecked=0, Total=106602 [2021-12-07 01:38:59,362 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 146 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 7306 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 7322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 7306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-07 01:38:59,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 766 Invalid, 7322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 7306 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-07 01:38:59,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2021-12-07 01:38:59,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1127. [2021-12-07 01:38:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1099 states have (on average 1.0709736123748863) internal successors, (1177), 1099 states have internal predecessors, (1177), 3 states have call successors, (3), 2 states have call predecessors, (3), 24 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-07 01:38:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1205 transitions. [2021-12-07 01:38:59,457 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1205 transitions. Word has length 1148 [2021-12-07 01:38:59,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:38:59,458 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1205 transitions. [2021-12-07 01:38:59,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.223404255319149) internal successors, (209), 81 states have internal predecessors, (209), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-07 01:38:59,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1205 transitions. [2021-12-07 01:38:59,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1161 [2021-12-07 01:38:59,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:38:59,468 INFO L514 BasicCegarLoop]: trace histogram [297, 297, 297, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2021-12-07 01:38:59,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-07 01:38:59,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-07 01:38:59,670 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:38:59,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:38:59,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1181872097, now seen corresponding path program 20 times [2021-12-07 01:38:59,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:38:59,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766098402] [2021-12-07 01:38:59,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:38:59,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:39:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:00,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:39:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:01,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:02,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:03,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:03,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:03,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:04,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:04,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:04,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:04,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:04,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:04,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:04,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:04,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:04,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:04,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:04,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:04,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:04,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:04,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:04,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:04,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:04,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 142057 backedges. 81429 proven. 944 refuted. 0 times theorem prover too weak. 59684 trivial. 0 not checked. [2021-12-07 01:39:04,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:39:04,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766098402] [2021-12-07 01:39:04,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766098402] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:39:04,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581395729] [2021-12-07 01:39:04,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:39:04,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:39:04,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:39:04,899 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:39:04,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-07 01:39:05,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:39:05,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:39:05,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 2644 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-07 01:39:05,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:39:07,084 INFO L134 CoverageAnalysis]: Checked inductivity of 142057 backedges. 85168 proven. 5130 refuted. 0 times theorem prover too weak. 51759 trivial. 0 not checked. [2021-12-07 01:39:07,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:39:29,903 INFO L134 CoverageAnalysis]: Checked inductivity of 142057 backedges. 85286 proven. 5012 refuted. 0 times theorem prover too weak. 51759 trivial. 0 not checked. [2021-12-07 01:39:29,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581395729] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:39:29,903 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:39:29,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 74, 74] total 101 [2021-12-07 01:39:29,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319233298] [2021-12-07 01:39:29,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:39:29,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-12-07 01:39:29,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:39:29,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-12-07 01:39:29,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=9235, Unknown=0, NotChecked=0, Total=10100 [2021-12-07 01:39:29,907 INFO L87 Difference]: Start difference. First operand 1127 states and 1205 transitions. Second operand has 101 states, 101 states have (on average 2.207920792079208) internal successors, (223), 87 states have internal predecessors, (223), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-07 01:39:37,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:39:37,965 INFO L93 Difference]: Finished difference Result 1798 states and 1955 transitions. [2021-12-07 01:39:37,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 282 states. [2021-12-07 01:39:37,965 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.207920792079208) internal successors, (223), 87 states have internal predecessors, (223), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 1160 [2021-12-07 01:39:37,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:39:37,969 INFO L225 Difference]: With dead ends: 1798 [2021-12-07 01:39:37,969 INFO L226 Difference]: Without dead ends: 1136 [2021-12-07 01:39:37,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2699 GetRequests, 2332 SyntacticMatches, 3 SemanticMatches, 364 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40786 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=18584, Invalid=115006, Unknown=0, NotChecked=0, Total=133590 [2021-12-07 01:39:37,977 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 148 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 9748 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 9764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 9748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:39:37,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 1092 Invalid, 9764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 9748 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-07 01:39:37,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2021-12-07 01:39:38,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1136. [2021-12-07 01:39:38,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1108 states have (on average 1.0649819494584838) internal successors, (1180), 1108 states have internal predecessors, (1180), 3 states have call successors, (3), 2 states have call predecessors, (3), 24 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-07 01:39:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1208 transitions. [2021-12-07 01:39:38,060 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1208 transitions. Word has length 1160 [2021-12-07 01:39:38,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:39:38,061 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1208 transitions. [2021-12-07 01:39:38,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.207920792079208) internal successors, (223), 87 states have internal predecessors, (223), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-07 01:39:38,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1208 transitions. [2021-12-07 01:39:38,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1170 [2021-12-07 01:39:38,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:39:38,071 INFO L514 BasicCegarLoop]: trace histogram [300, 300, 300, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2021-12-07 01:39:38,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-07 01:39:38,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-07 01:39:38,272 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:39:38,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:39:38,274 INFO L85 PathProgramCache]: Analyzing trace with hash -367810876, now seen corresponding path program 21 times [2021-12-07 01:39:38,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:39:38,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106772595] [2021-12-07 01:39:38,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:39:38,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:39:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:39,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:39:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:40,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:40,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:41,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:41,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:42,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:42,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:43,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:43,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:43,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:43,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:43,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:43,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:43,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:43,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:43,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:43,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:43,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:43,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:43,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:43,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:43,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:43,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:39:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:43,702 INFO L134 CoverageAnalysis]: Checked inductivity of 144811 backedges. 83675 proven. 1079 refuted. 0 times theorem prover too weak. 60057 trivial. 0 not checked. [2021-12-07 01:39:43,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:39:43,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106772595] [2021-12-07 01:39:43,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106772595] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:39:43,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765684917] [2021-12-07 01:39:43,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:39:43,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:39:43,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:39:43,703 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:39:43,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-07 01:39:44,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2021-12-07 01:39:44,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:39:44,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 51 conjunts are in the unsatisfiable core [2021-12-07 01:39:44,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:39:46,595 INFO L134 CoverageAnalysis]: Checked inductivity of 144811 backedges. 71239 proven. 36297 refuted. 0 times theorem prover too weak. 37275 trivial. 0 not checked. [2021-12-07 01:39:46,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:39:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 144811 backedges. 71239 proven. 36297 refuted. 0 times theorem prover too weak. 37275 trivial. 0 not checked. [2021-12-07 01:39:53,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765684917] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:39:53,982 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:39:53,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 51, 51] total 165 [2021-12-07 01:39:53,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204770049] [2021-12-07 01:39:53,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:39:53,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 165 states [2021-12-07 01:39:53,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:39:53,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2021-12-07 01:39:53,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2406, Invalid=24654, Unknown=0, NotChecked=0, Total=27060 [2021-12-07 01:39:53,987 INFO L87 Difference]: Start difference. First operand 1136 states and 1208 transitions. Second operand has 165 states, 165 states have (on average 1.903030303030303) internal successors, (314), 152 states have internal predecessors, (314), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-07 01:40:23,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:40:23,957 INFO L93 Difference]: Finished difference Result 4999 states and 5626 transitions. [2021-12-07 01:40:23,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 738 states. [2021-12-07 01:40:23,957 INFO L78 Accepts]: Start accepts. Automaton has has 165 states, 165 states have (on average 1.903030303030303) internal successors, (314), 152 states have internal predecessors, (314), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) Word has length 1169 [2021-12-07 01:40:23,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:40:23,967 INFO L225 Difference]: With dead ends: 4999 [2021-12-07 01:40:23,967 INFO L226 Difference]: Without dead ends: 3805 [2021-12-07 01:40:24,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3189 GetRequests, 2293 SyntacticMatches, 0 SemanticMatches, 896 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311752 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=72834, Invalid=732672, Unknown=0, NotChecked=0, Total=805506 [2021-12-07 01:40:24,033 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 8432 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 4277 mSolverCounterSat, 2083 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8432 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 6360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2083 IncrementalHoareTripleChecker+Valid, 4277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:40:24,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8432 Valid, 1068 Invalid, 6360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2083 Valid, 4277 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-07 01:40:24,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2021-12-07 01:40:24,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 1583. [2021-12-07 01:40:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1550 states have (on average 1.0787096774193548) internal successors, (1672), 1550 states have internal predecessors, (1672), 3 states have call successors, (3), 2 states have call predecessors, (3), 29 states have return successors, (30), 30 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-07 01:40:24,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 1705 transitions. [2021-12-07 01:40:24,188 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 1705 transitions. Word has length 1169 [2021-12-07 01:40:24,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:40:24,189 INFO L470 AbstractCegarLoop]: Abstraction has 1583 states and 1705 transitions. [2021-12-07 01:40:24,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 165 states, 165 states have (on average 1.903030303030303) internal successors, (314), 152 states have internal predecessors, (314), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-07 01:40:24,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 1705 transitions. [2021-12-07 01:40:24,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1578 [2021-12-07 01:40:24,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:40:24,206 INFO L514 BasicCegarLoop]: trace histogram [418, 418, 418, 31, 30, 30, 30, 30, 28, 28, 28, 28, 27, 27, 1, 1, 1, 1, 1, 1] [2021-12-07 01:40:24,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-12-07 01:40:24,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-07 01:40:24,408 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:40:24,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:40:24,409 INFO L85 PathProgramCache]: Analyzing trace with hash 2047626966, now seen corresponding path program 22 times [2021-12-07 01:40:24,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:40:24,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260473329] [2021-12-07 01:40:24,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:40:24,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:40:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:26,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:40:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:27,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:28,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:29,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:30,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:31,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:32,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:32,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:33,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:33,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:33,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:34,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:34,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:34,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:34,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:34,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:35,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:35,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:35,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:35,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:35,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:35,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:35,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:35,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:35,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:35,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:35,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:35,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:40:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:40:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 277639 backedges. 114961 proven. 22230 refuted. 0 times theorem prover too weak. 140448 trivial. 0 not checked. [2021-12-07 01:40:35,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:40:35,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260473329] [2021-12-07 01:40:35,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260473329] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:40:35,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121793199] [2021-12-07 01:40:35,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:40:35,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:40:35,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:40:35,849 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:40:35,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-07 01:40:36,908 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:40:36,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:40:36,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 3601 conjuncts, 79 conjunts are in the unsatisfiable core [2021-12-07 01:40:36,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:40:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 277639 backedges. 115006 proven. 22185 refuted. 0 times theorem prover too weak. 140448 trivial. 0 not checked. [2021-12-07 01:40:37,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:41:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 277639 backedges. 115006 proven. 22185 refuted. 0 times theorem prover too weak. 140448 trivial. 0 not checked. [2021-12-07 01:41:10,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121793199] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:41:10,648 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:41:10,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79, 79] total 83 [2021-12-07 01:41:10,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271757896] [2021-12-07 01:41:10,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:41:10,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-12-07 01:41:10,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:41:10,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-12-07 01:41:10,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=751, Invalid=6055, Unknown=0, NotChecked=0, Total=6806 [2021-12-07 01:41:10,652 INFO L87 Difference]: Start difference. First operand 1583 states and 1705 transitions. Second operand has 83 states, 83 states have (on average 2.289156626506024) internal successors, (190), 67 states have internal predecessors, (190), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-07 01:41:13,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:13,410 INFO L93 Difference]: Finished difference Result 2647 states and 2889 transitions. [2021-12-07 01:41:13,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 292 states. [2021-12-07 01:41:13,411 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.289156626506024) internal successors, (190), 67 states have internal predecessors, (190), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) Word has length 1577 [2021-12-07 01:41:13,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:13,416 INFO L225 Difference]: With dead ends: 2647 [2021-12-07 01:41:13,416 INFO L226 Difference]: Without dead ends: 1583 [2021-12-07 01:41:13,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3571 GetRequests, 3234 SyntacticMatches, 0 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56755 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=21531, Invalid=93051, Unknown=0, NotChecked=0, Total=114582 [2021-12-07 01:41:13,424 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 907 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:13,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 297 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:41:13,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2021-12-07 01:41:13,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1583. [2021-12-07 01:41:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1550 states have (on average 1.0780645161290323) internal successors, (1671), 1550 states have internal predecessors, (1671), 3 states have call successors, (3), 2 states have call predecessors, (3), 29 states have return successors, (30), 30 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-07 01:41:13,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 1704 transitions. [2021-12-07 01:41:13,573 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 1704 transitions. Word has length 1577 [2021-12-07 01:41:13,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:13,573 INFO L470 AbstractCegarLoop]: Abstraction has 1583 states and 1704 transitions. [2021-12-07 01:41:13,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.289156626506024) internal successors, (190), 67 states have internal predecessors, (190), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-07 01:41:13,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 1704 transitions. [2021-12-07 01:41:13,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1634 [2021-12-07 01:41:13,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:13,591 INFO L514 BasicCegarLoop]: trace histogram [433, 433, 433, 32, 31, 31, 31, 31, 29, 29, 29, 29, 28, 28, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:13,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-07 01:41:13,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:41:13,792 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:41:13,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:13,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1321863488, now seen corresponding path program 23 times [2021-12-07 01:41:13,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:41:13,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999337609] [2021-12-07 01:41:13,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:13,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:41:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:15,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:41:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:17,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:18,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:19,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:21,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:21,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:22,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:23,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 297936 backedges. 166978 proven. 1223 refuted. 0 times theorem prover too weak. 129735 trivial. 0 not checked. [2021-12-07 01:41:24,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:41:24,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999337609] [2021-12-07 01:41:24,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999337609] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:41:24,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077269345] [2021-12-07 01:41:24,974 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 01:41:24,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:41:24,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:41:24,975 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:41:24,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-07 01:41:26,559 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) [2021-12-07 01:41:26,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:41:26,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 2736 conjuncts, 69 conjunts are in the unsatisfiable core [2021-12-07 01:41:26,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:27,524 INFO L134 CoverageAnalysis]: Checked inductivity of 297936 backedges. 148766 proven. 1223 refuted. 0 times theorem prover too weak. 147947 trivial. 0 not checked. [2021-12-07 01:41:27,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:41:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 297936 backedges. 148812 proven. 1177 refuted. 0 times theorem prover too weak. 147947 trivial. 0 not checked. [2021-12-07 01:41:31,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077269345] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:41:31,968 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:41:31,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 100 [2021-12-07 01:41:31,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021385313] [2021-12-07 01:41:31,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:41:31,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-12-07 01:41:31,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:41:31,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-12-07 01:41:31,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1190, Invalid=8710, Unknown=0, NotChecked=0, Total=9900 [2021-12-07 01:41:31,973 INFO L87 Difference]: Start difference. First operand 1583 states and 1704 transitions. Second operand has 100 states, 100 states have (on average 1.75) internal successors, (175), 99 states have internal predecessors, (175), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-07 01:41:33,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:33,675 INFO L93 Difference]: Finished difference Result 2605 states and 2849 transitions. [2021-12-07 01:41:33,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-12-07 01:41:33,675 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.75) internal successors, (175), 99 states have internal predecessors, (175), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 1633 [2021-12-07 01:41:33,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:33,680 INFO L225 Difference]: With dead ends: 2605 [2021-12-07 01:41:33,680 INFO L226 Difference]: Without dead ends: 1598 [2021-12-07 01:41:33,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3465 GetRequests, 3299 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6445 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4988, Invalid=22402, Unknown=0, NotChecked=0, Total=27390 [2021-12-07 01:41:33,684 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 342 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 2186 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:33,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 738 Invalid, 2234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2186 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:41:33,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-12-07 01:41:33,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1598. [2021-12-07 01:41:33,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1565 states have (on average 1.0728434504792332) internal successors, (1679), 1565 states have internal predecessors, (1679), 3 states have call successors, (3), 2 states have call predecessors, (3), 29 states have return successors, (30), 30 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-07 01:41:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 1712 transitions. [2021-12-07 01:41:33,839 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 1712 transitions. Word has length 1633 [2021-12-07 01:41:33,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:33,839 INFO L470 AbstractCegarLoop]: Abstraction has 1598 states and 1712 transitions. [2021-12-07 01:41:33,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.75) internal successors, (175), 99 states have internal predecessors, (175), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-07 01:41:33,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 1712 transitions. [2021-12-07 01:41:33,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1649 [2021-12-07 01:41:33,857 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:33,857 INFO L514 BasicCegarLoop]: trace histogram [438, 438, 438, 32, 31, 31, 31, 31, 29, 29, 29, 29, 28, 28, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:33,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-12-07 01:41:34,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-12-07 01:41:34,059 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:41:34,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:34,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1812828027, now seen corresponding path program 24 times [2021-12-07 01:41:34,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:41:34,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438241544] [2021-12-07 01:41:34,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:34,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:41:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:35,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:41:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:37,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:39,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:40,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:41,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:42,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:43,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:43,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:44,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:44,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:41:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 304606 backedges. 171770 proven. 1376 refuted. 0 times theorem prover too weak. 131460 trivial. 0 not checked. [2021-12-07 01:41:45,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:41:45,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438241544] [2021-12-07 01:41:45,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438241544] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:41:45,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812181775] [2021-12-07 01:41:45,759 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 01:41:45,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:41:45,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:41:45,760 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:41:45,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-07 01:41:47,419 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 51 check-sat command(s) [2021-12-07 01:41:47,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:41:47,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 3280 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-07 01:41:47,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:49,848 INFO L134 CoverageAnalysis]: Checked inductivity of 304606 backedges. 150699 proven. 73813 refuted. 0 times theorem prover too weak. 80094 trivial. 0 not checked. [2021-12-07 01:41:49,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:42:01,415 INFO L134 CoverageAnalysis]: Checked inductivity of 304606 backedges. 150699 proven. 73813 refuted. 0 times theorem prover too weak. 80094 trivial. 0 not checked. [2021-12-07 01:42:01,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812181775] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:42:01,416 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:42:01,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 58, 58] total 187 [2021-12-07 01:42:01,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355679939] [2021-12-07 01:42:01,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:42:01,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 187 states [2021-12-07 01:42:01,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:42:01,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2021-12-07 01:42:01,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3048, Invalid=31734, Unknown=0, NotChecked=0, Total=34782 [2021-12-07 01:42:01,421 INFO L87 Difference]: Start difference. First operand 1598 states and 1712 transitions. Second operand has 187 states, 187 states have (on average 1.893048128342246) internal successors, (354), 172 states have internal predecessors, (354), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-07 01:42:45,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:42:45,395 INFO L93 Difference]: Finished difference Result 7171 states and 8012 transitions. [2021-12-07 01:42:45,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 939 states. [2021-12-07 01:42:45,396 INFO L78 Accepts]: Start accepts. Automaton has has 187 states, 187 states have (on average 1.893048128342246) internal successors, (354), 172 states have internal predecessors, (354), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) Word has length 1648 [2021-12-07 01:42:45,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:42:45,409 INFO L225 Difference]: With dead ends: 7171 [2021-12-07 01:42:45,410 INFO L226 Difference]: Without dead ends: 5395 [2021-12-07 01:42:45,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4367 GetRequests, 3248 SyntacticMatches, 0 SemanticMatches, 1119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498970 ImplicationChecksByTransitivity, 43.8s TimeCoverageRelationStatistics Valid=106689, Invalid=1148831, Unknown=0, NotChecked=0, Total=1255520 [2021-12-07 01:42:45,472 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 10791 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 5517 mSolverCounterSat, 2867 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10791 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 8384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2867 IncrementalHoareTripleChecker+Valid, 5517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:42:45,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10791 Valid, 1241 Invalid, 8384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2867 Valid, 5517 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-07 01:42:45,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5395 states. [2021-12-07 01:42:45,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5395 to 1997. [2021-12-07 01:42:45,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 1960 states have (on average 1.079591836734694) internal successors, (2116), 1960 states have internal predecessors, (2116), 3 states have call successors, (3), 2 states have call predecessors, (3), 33 states have return successors, (34), 34 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-07 01:42:45,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 2153 transitions. [2021-12-07 01:42:45,747 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 2153 transitions. Word has length 1648 [2021-12-07 01:42:45,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:42:45,747 INFO L470 AbstractCegarLoop]: Abstraction has 1997 states and 2153 transitions. [2021-12-07 01:42:45,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 187 states, 187 states have (on average 1.893048128342246) internal successors, (354), 172 states have internal predecessors, (354), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-07 01:42:45,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 2153 transitions. [2021-12-07 01:42:45,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1925 [2021-12-07 01:42:45,819 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:42:45,820 INFO L514 BasicCegarLoop]: trace histogram [526, 526, 526, 32, 31, 31, 31, 31, 31, 31, 31, 31, 30, 30, 1, 1, 1, 1, 1, 1] [2021-12-07 01:42:45,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-07 01:42:46,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:42:46,021 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:42:46,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:42:46,024 INFO L85 PathProgramCache]: Analyzing trace with hash 275202857, now seen corresponding path program 25 times [2021-12-07 01:42:46,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:42:46,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167525820] [2021-12-07 01:42:46,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:42:46,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:42:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:42:48,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:42:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:42:51,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:42:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:42:52,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:42:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:42:54,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:42:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:42:55,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:42:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:42:57,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:42:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:42:58,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:42:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:42:58,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:42:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:42:59,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:42:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:00,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:00,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:01,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:01,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:02,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:02,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:02,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:02,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:03,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:03,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:03,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:03,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:03,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:03,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:03,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:03,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:03,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:04,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:04,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:04,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:04,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:43:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:04,236 INFO L134 CoverageAnalysis]: Checked inductivity of 435678 backedges. 169446 proven. 28460 refuted. 0 times theorem prover too weak. 237772 trivial. 0 not checked. [2021-12-07 01:43:04,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:43:04,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167525820] [2021-12-07 01:43:04,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167525820] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:43:04,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391437602] [2021-12-07 01:43:04,236 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 01:43:04,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:04,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:43:04,237 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:43:04,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-07 01:43:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:05,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 4408 conjuncts, 84 conjunts are in the unsatisfiable core [2021-12-07 01:43:05,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 435678 backedges. 169494 proven. 28412 refuted. 0 times theorem prover too weak. 237772 trivial. 0 not checked. [2021-12-07 01:43:07,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 435678 backedges. 169494 proven. 28412 refuted. 0 times theorem prover too weak. 237772 trivial. 0 not checked. [2021-12-07 01:43:52,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391437602] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:43:52,302 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:43:52,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84, 84] total 88 [2021-12-07 01:43:52,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369648843] [2021-12-07 01:43:52,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:52,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-12-07 01:43:52,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:43:52,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-12-07 01:43:52,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=6816, Unknown=0, NotChecked=0, Total=7656 [2021-12-07 01:43:52,306 INFO L87 Difference]: Start difference. First operand 1997 states and 2153 transitions. Second operand has 88 states, 88 states have (on average 2.284090909090909) internal successors, (201), 71 states have internal predecessors, (201), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) [2021-12-07 01:43:55,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:55,798 INFO L93 Difference]: Finished difference Result 3418 states and 3728 transitions. [2021-12-07 01:43:55,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 327 states. [2021-12-07 01:43:55,799 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.284090909090909) internal successors, (201), 71 states have internal predecessors, (201), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) Word has length 1924 [2021-12-07 01:43:55,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:55,805 INFO L225 Difference]: With dead ends: 3418 [2021-12-07 01:43:55,805 INFO L226 Difference]: Without dead ends: 1997 [2021-12-07 01:43:55,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4312 GetRequests, 3937 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71582 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=26922, Invalid=114830, Unknown=0, NotChecked=0, Total=141752 [2021-12-07 01:43:55,821 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 995 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:55,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 316 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 01:43:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2021-12-07 01:43:56,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1997. [2021-12-07 01:43:56,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 1960 states have (on average 1.0790816326530612) internal successors, (2115), 1960 states have internal predecessors, (2115), 3 states have call successors, (3), 2 states have call predecessors, (3), 33 states have return successors, (34), 34 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-07 01:43:56,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 2152 transitions. [2021-12-07 01:43:56,083 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 2152 transitions. Word has length 1924 [2021-12-07 01:43:56,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:56,084 INFO L470 AbstractCegarLoop]: Abstraction has 1997 states and 2152 transitions. [2021-12-07 01:43:56,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.284090909090909) internal successors, (201), 71 states have internal predecessors, (201), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) [2021-12-07 01:43:56,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 2152 transitions. [2021-12-07 01:43:56,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1994 [2021-12-07 01:43:56,108 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:56,109 INFO L514 BasicCegarLoop]: trace histogram [542, 542, 542, 35, 34, 34, 34, 34, 32, 32, 32, 32, 31, 31, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:56,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-12-07 01:43:56,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:43:56,309 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:43:56,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:56,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1230227892, now seen corresponding path program 26 times [2021-12-07 01:43:56,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:43:56,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151736087] [2021-12-07 01:43:56,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:56,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:43:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:59,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 01:44:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:01,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:03,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:05,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:07,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:08,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:09,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:10,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:11,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:12,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:12,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:13,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:13,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:13,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:14,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:14,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:15,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:15,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:15,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:15,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:15,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:15,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:15,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:15,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:15,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:16,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:16,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:16,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:16,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:16,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:16,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:16,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:44:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:44:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 462995 backedges. 189621 proven. 35921 refuted. 0 times theorem prover too weak. 237453 trivial. 0 not checked. [2021-12-07 01:44:16,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:44:16,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151736087] [2021-12-07 01:44:16,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151736087] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:44:16,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028159822] [2021-12-07 01:44:16,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:44:16,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:44:16,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:44:16,472 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:44:16,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-07 01:44:18,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:44:18,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:44:18,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 4561 conjuncts, 89 conjunts are in the unsatisfiable core [2021-12-07 01:44:18,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:44:19,838 INFO L134 CoverageAnalysis]: Checked inductivity of 462995 backedges. 189672 proven. 35870 refuted. 0 times theorem prover too weak. 237453 trivial. 0 not checked. [2021-12-07 01:44:19,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:45:13,494 INFO L134 CoverageAnalysis]: Checked inductivity of 462995 backedges. 189672 proven. 35870 refuted. 0 times theorem prover too weak. 237453 trivial. 0 not checked. [2021-12-07 01:45:13,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028159822] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:45:13,495 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:45:13,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89, 89] total 93 [2021-12-07 01:45:13,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448719911] [2021-12-07 01:45:13,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:45:13,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-12-07 01:45:13,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:13,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-12-07 01:45:13,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=934, Invalid=7622, Unknown=0, NotChecked=0, Total=8556 [2021-12-07 01:45:13,499 INFO L87 Difference]: Start difference. First operand 1997 states and 2152 transitions. Second operand has 93 states, 93 states have (on average 2.2795698924731185) internal successors, (212), 75 states have internal predecessors, (212), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-07 01:45:17,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:17,315 INFO L93 Difference]: Finished difference Result 3358 states and 3666 transitions. [2021-12-07 01:45:17,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 364 states. [2021-12-07 01:45:17,315 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.2795698924731185) internal successors, (212), 75 states have internal predecessors, (212), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) Word has length 1993 [2021-12-07 01:45:17,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:17,321 INFO L225 Difference]: With dead ends: 3358 [2021-12-07 01:45:17,321 INFO L226 Difference]: Without dead ends: 1997 [2021-12-07 01:45:17,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4493 GetRequests, 4078 SyntacticMatches, 0 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89155 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=33278, Invalid=140194, Unknown=0, NotChecked=0, Total=173472 [2021-12-07 01:45:17,335 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1077 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:17,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1077 Valid, 340 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 01:45:17,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2021-12-07 01:45:17,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1997. [2021-12-07 01:45:17,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 1960 states have (on average 1.0785714285714285) internal successors, (2114), 1960 states have internal predecessors, (2114), 3 states have call successors, (3), 2 states have call predecessors, (3), 33 states have return successors, (34), 34 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-07 01:45:17,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 2151 transitions. [2021-12-07 01:45:17,599 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 2151 transitions. Word has length 1993 [2021-12-07 01:45:17,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:17,600 INFO L470 AbstractCegarLoop]: Abstraction has 1997 states and 2151 transitions. [2021-12-07 01:45:17,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.2795698924731185) internal successors, (212), 75 states have internal predecessors, (212), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-07 01:45:17,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 2151 transitions. [2021-12-07 01:45:17,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2046 [2021-12-07 01:45:17,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:17,636 INFO L514 BasicCegarLoop]: trace histogram [559, 559, 559, 34, 33, 33, 33, 33, 33, 33, 33, 33, 32, 32, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:17,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-12-07 01:45:17,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-12-07 01:45:17,836 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:45:17,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:17,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1453838780, now seen corresponding path program 27 times [2021-12-07 01:45:17,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:17,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272328103] [2021-12-07 01:45:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:17,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:21,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:45:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:23,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:25,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:27,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:29,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:31,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:32,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:33,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:34,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:35,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:36,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:36,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:36,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:36,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:36,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:36,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:36,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:37,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:37,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:37,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:37,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:37,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:37,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:37,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:37,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:37,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:37,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:37,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:37,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:37,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:37,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:37,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:45:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 492172 backedges. 272947 proven. 1538 refuted. 0 times theorem prover too weak. 217687 trivial. 0 not checked. [2021-12-07 01:45:37,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:37,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272328103] [2021-12-07 01:45:37,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272328103] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:45:37,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402011242] [2021-12-07 01:45:37,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:45:37,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:45:37,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:45:37,357 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:45:37,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-07 01:45:39,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2021-12-07 01:45:39,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:45:39,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 2463 conjuncts, 63 conjunts are in the unsatisfiable core [2021-12-07 01:45:39,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:45:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 492172 backedges. 244059 proven. 121065 refuted. 0 times theorem prover too weak. 127048 trivial. 0 not checked. [2021-12-07 01:45:42,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:45:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 492172 backedges. 244059 proven. 121065 refuted. 0 times theorem prover too weak. 127048 trivial. 0 not checked. [2021-12-07 01:45:59,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402011242] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:45:59,103 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:45:59,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 63, 63] total 201 [2021-12-07 01:45:59,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163754606] [2021-12-07 01:45:59,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:45:59,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 201 states [2021-12-07 01:45:59,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:59,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2021-12-07 01:45:59,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3469, Invalid=36731, Unknown=0, NotChecked=0, Total=40200 [2021-12-07 01:45:59,111 INFO L87 Difference]: Start difference. First operand 1997 states and 2151 transitions. Second operand has 201 states, 201 states have (on average 1.900497512437811) internal successors, (382), 184 states have internal predecessors, (382), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) [2021-12-07 01:46:56,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:46:56,863 INFO L93 Difference]: Finished difference Result 8429 states and 9446 transitions. [2021-12-07 01:46:56,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1108 states. [2021-12-07 01:46:56,863 INFO L78 Accepts]: Start accepts. Automaton has has 201 states, 201 states have (on average 1.900497512437811) internal successors, (382), 184 states have internal predecessors, (382), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) Word has length 2045 [2021-12-07 01:46:56,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:46:56,874 INFO L225 Difference]: With dead ends: 8429 [2021-12-07 01:46:56,874 INFO L226 Difference]: Without dead ends: 6218 [2021-12-07 01:46:56,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5343 GetRequests, 4041 SyntacticMatches, 0 SemanticMatches, 1302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689141 ImplicationChecksByTransitivity, 57.0s TimeCoverageRelationStatistics Valid=137796, Invalid=1561316, Unknown=0, NotChecked=0, Total=1699112 [2021-12-07 01:46:56,959 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 9681 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 6563 mSolverCounterSat, 2536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9681 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 9099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2536 IncrementalHoareTripleChecker+Valid, 6563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:46:56,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9681 Valid, 1626 Invalid, 9099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2536 Valid, 6563 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-07 01:46:56,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6218 states. [2021-12-07 01:46:57,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6218 to 2312. [2021-12-07 01:46:57,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2272 states have (on average 1.0805457746478873) internal successors, (2455), 2272 states have internal predecessors, (2455), 3 states have call successors, (3), 2 states have call predecessors, (3), 36 states have return successors, (37), 37 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-07 01:46:57,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 2495 transitions. [2021-12-07 01:46:57,405 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 2495 transitions. Word has length 2045 [2021-12-07 01:46:57,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:46:57,405 INFO L470 AbstractCegarLoop]: Abstraction has 2312 states and 2495 transitions. [2021-12-07 01:46:57,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 201 states, 201 states have (on average 1.900497512437811) internal successors, (382), 184 states have internal predecessors, (382), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) [2021-12-07 01:46:57,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 2495 transitions. [2021-12-07 01:46:57,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2305 [2021-12-07 01:46:57,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:46:57,438 INFO L514 BasicCegarLoop]: trace histogram [638, 638, 638, 36, 35, 35, 35, 35, 35, 35, 35, 35, 34, 34, 1, 1, 1, 1, 1, 1] [2021-12-07 01:46:57,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-12-07 01:46:57,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:46:57,639 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-07 01:46:57,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:46:57,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1190885861, now seen corresponding path program 28 times [2021-12-07 01:46:57,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:46:57,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725615055] [2021-12-07 01:46:57,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:46:57,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:46:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:01,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 01:47:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:04,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:07,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:09,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:12,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:14,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:15,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:17,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:18,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:19,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:20,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:21,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:21,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:22,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:23,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:23,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:24,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:24,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:24,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:25,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:25,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:25,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:25,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:25,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:25,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:25,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:25,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:26,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:26,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:26,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:26,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:26,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:26,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:26,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:26,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:47:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 638520 backedges. 253467 proven. 44766 refuted. 0 times theorem prover too weak. 340287 trivial. 0 not checked. [2021-12-07 01:47:26,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:47:26,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725615055] [2021-12-07 01:47:26,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725615055] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:47:26,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264787606] [2021-12-07 01:47:26,573 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:47:26,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:47:26,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:47:26,574 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:47:26,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec8f11b0-b2f2-43b6-8499-249f0dfd5a7b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-07 01:47:29,238 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:47:29,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:47:29,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 5284 conjuncts, 80 conjunts are in the unsatisfiable core [2021-12-07 01:47:29,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:47:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 638520 backedges. 129045 proven. 6218 refuted. 0 times theorem prover too weak. 503257 trivial. 0 not checked. [2021-12-07 01:47:33,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:47:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 638520 backedges. 129045 proven. 6218 refuted. 0 times theorem prover too weak. 503257 trivial. 0 not checked. [2021-12-07 01:47:40,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264787606] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:47:40,167 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:47:40,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 80, 80] total 253 [2021-12-07 01:47:40,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143315919] [2021-12-07 01:47:40,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:47:40,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 253 states [2021-12-07 01:47:40,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:47:40,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 253 interpolants. [2021-12-07 01:47:40,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8604, Invalid=55152, Unknown=0, NotChecked=0, Total=63756 [2021-12-07 01:47:40,174 INFO L87 Difference]: Start difference. First operand 2312 states and 2495 transitions. Second operand has 253 states, 253 states have (on average 1.849802371541502) internal successors, (468), 232 states have internal predecessors, (468), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23)