./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Primes.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/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_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Primes.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/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 32bit --witnessprinter.graph.data.programhash 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:33:24,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:33:24,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:33:24,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:33:24,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:33:24,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:33:24,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:33:24,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:33:24,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:33:24,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:33:24,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:33:24,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:33:24,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:33:24,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:33:24,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:33:24,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:33:24,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:33:24,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:33:24,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:33:24,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:33:24,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:33:24,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:33:24,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:33:24,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:33:24,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:33:24,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:33:24,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:33:24,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:33:24,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:33:24,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:33:24,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:33:24,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:33:24,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:33:24,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:33:24,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:33:24,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:33:24,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:33:24,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:33:24,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:33:24,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:33:24,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:33:24,519 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-07 00:33:24,536 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:33:24,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:33:24,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:33:24,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:33:24,538 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:33:24,538 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:33:24,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:33:24,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:33:24,538 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:33:24,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:33:24,539 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:33:24,539 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 00:33:24,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:33:24,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:33:24,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:33:24,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:33:24,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:33:24,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:33:24,540 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-07 00:33:24,540 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:33:24,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:33:24,540 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:33:24,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:33:24,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:33:24,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:33:24,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:33:24,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:33:24,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:33:24,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:33:24,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:33:24,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:33:24,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:33:24,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:33:24,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:33:24,542 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_4e8dba94-dd02-465f-96c4-6bf9e2559c55/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e [2021-12-07 00:33:24,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:33:24,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:33:24,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:33:24,756 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:33:24,756 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:33:24,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/recursive/Primes.c [2021-12-07 00:33:24,796 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/data/b35800046/5a54277db29745c9b0cb85e4865970ed/FLAG64d5520ac [2021-12-07 00:33:25,166 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:33:25,167 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/sv-benchmarks/c/recursive/Primes.c [2021-12-07 00:33:25,172 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/data/b35800046/5a54277db29745c9b0cb85e4865970ed/FLAG64d5520ac [2021-12-07 00:33:25,182 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/data/b35800046/5a54277db29745c9b0cb85e4865970ed [2021-12-07 00:33:25,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:33:25,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:33:25,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:33:25,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:33:25,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:33:25,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:33:25" (1/1) ... [2021-12-07 00:33:25,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc33157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:25, skipping insertion in model container [2021-12-07 00:33:25,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:33:25" (1/1) ... [2021-12-07 00:33:25,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:33:25,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:33:25,317 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/sv-benchmarks/c/recursive/Primes.c[2190,2203] [2021-12-07 00:33:25,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:33:25,326 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:33:25,345 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/sv-benchmarks/c/recursive/Primes.c[2190,2203] [2021-12-07 00:33:25,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:33:25,357 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:33:25,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:25 WrapperNode [2021-12-07 00:33:25,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:33:25,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:33:25,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:33:25,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:33:25,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:25" (1/1) ... [2021-12-07 00:33:25,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:25" (1/1) ... [2021-12-07 00:33:25,386 INFO L137 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2021-12-07 00:33:25,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:33:25,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:33:25,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:33:25,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:33:25,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:25" (1/1) ... [2021-12-07 00:33:25,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:25" (1/1) ... [2021-12-07 00:33:25,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:25" (1/1) ... [2021-12-07 00:33:25,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:25" (1/1) ... [2021-12-07 00:33:25,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:25" (1/1) ... [2021-12-07 00:33:25,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:25" (1/1) ... [2021-12-07 00:33:25,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:25" (1/1) ... [2021-12-07 00:33:25,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:33:25,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:33:25,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:33:25,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:33:25,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:25" (1/1) ... [2021-12-07 00:33:25,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:33:25,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:25,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:33:25,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:33:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure multiple_of [2021-12-07 00:33:25,478 INFO L138 BoogieDeclarations]: Found implementation of procedure multiple_of [2021-12-07 00:33:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:33:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2021-12-07 00:33:25,479 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2021-12-07 00:33:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure is_prime_ [2021-12-07 00:33:25,479 INFO L138 BoogieDeclarations]: Found implementation of procedure is_prime_ [2021-12-07 00:33:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:33:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:33:25,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:33:25,543 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:33:25,544 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:33:25,717 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:33:25,725 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:33:25,725 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-07 00:33:25,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:33:25 BoogieIcfgContainer [2021-12-07 00:33:25,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:33:25,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:33:25,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:33:25,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:33:25,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:33:25" (1/3) ... [2021-12-07 00:33:25,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1343eb83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:33:25, skipping insertion in model container [2021-12-07 00:33:25,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:33:25" (2/3) ... [2021-12-07 00:33:25,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1343eb83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:33:25, skipping insertion in model container [2021-12-07 00:33:25,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:33:25" (3/3) ... [2021-12-07 00:33:25,734 INFO L111 eAbstractionObserver]: Analyzing ICFG Primes.c [2021-12-07 00:33:25,741 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:33:25,741 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-12-07 00:33:25,776 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:33:25,782 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 00:33:25,782 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-12-07 00:33:25,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 70 states have internal predecessors, (87), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-07 00:33:25,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-07 00:33:25,798 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:25,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-07 00:33:25,799 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:25,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:25,803 INFO L85 PathProgramCache]: Analyzing trace with hash 2957412, now seen corresponding path program 1 times [2021-12-07 00:33:25,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:25,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143091623] [2021-12-07 00:33:25,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:25,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:25,937 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 00:33:25,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:25,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143091623] [2021-12-07 00:33:25,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143091623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:25,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:25,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:33:25,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551392155] [2021-12-07 00:33:25,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:25,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:33:25,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:25,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:33:25,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:33:25,976 INFO L87 Difference]: Start difference. First operand has 83 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 70 states have internal predecessors, (87), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:26,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:26,011 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2021-12-07 00:33:26,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:33:26,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-12-07 00:33:26,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:26,021 INFO L225 Difference]: With dead ends: 89 [2021-12-07 00:33:26,021 INFO L226 Difference]: Without dead ends: 76 [2021-12-07 00:33:26,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:33:26,027 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 16 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 188 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 00:33:26,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 188 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:33:26,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-12-07 00:33:26,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-12-07 00:33:26,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 64 states have internal predecessors, (76), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-07 00:33:26,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2021-12-07 00:33:26,063 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 4 [2021-12-07 00:33:26,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:26,064 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2021-12-07 00:33:26,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:26,064 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2021-12-07 00:33:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-07 00:33:26,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:26,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-07 00:33:26,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:33:26,065 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:26,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:26,066 INFO L85 PathProgramCache]: Analyzing trace with hash 91679879, now seen corresponding path program 1 times [2021-12-07 00:33:26,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:26,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581873347] [2021-12-07 00:33:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:26,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:26,091 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 00:33:26,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:26,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581873347] [2021-12-07 00:33:26,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581873347] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:26,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:26,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:33:26,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325906827] [2021-12-07 00:33:26,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:26,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:33:26,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:26,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:33:26,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:33:26,095 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:26,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:26,107 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2021-12-07 00:33:26,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:33:26,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-07 00:33:26,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:26,108 INFO L225 Difference]: With dead ends: 76 [2021-12-07 00:33:26,108 INFO L226 Difference]: Without dead ends: 75 [2021-12-07 00:33:26,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:33:26,110 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 6 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:26,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 173 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:33:26,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-07 00:33:26,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-12-07 00:33:26,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.530612244897959) internal successors, (75), 63 states have internal predecessors, (75), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-07 00:33:26,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2021-12-07 00:33:26,120 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 5 [2021-12-07 00:33:26,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:26,120 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2021-12-07 00:33:26,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2021-12-07 00:33:26,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-07 00:33:26,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:26,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:26,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:33:26,121 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:26,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:26,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1790314255, now seen corresponding path program 1 times [2021-12-07 00:33:26,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:26,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855334613] [2021-12-07 00:33:26,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:26,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:26,166 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 00:33:26,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:26,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855334613] [2021-12-07 00:33:26,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855334613] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:26,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:26,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:33:26,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660161857] [2021-12-07 00:33:26,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:26,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:33:26,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:26,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:33:26,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:33:26,168 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:26,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:26,225 INFO L93 Difference]: Finished difference Result 139 states and 178 transitions. [2021-12-07 00:33:26,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:33:26,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-07 00:33:26,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:26,229 INFO L225 Difference]: With dead ends: 139 [2021-12-07 00:33:26,229 INFO L226 Difference]: Without dead ends: 70 [2021-12-07 00:33:26,231 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 00:33:26,232 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 43 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:26,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 249 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:33:26,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-07 00:33:26,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2021-12-07 00:33:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 57 states have internal predecessors, (67), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-07 00:33:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2021-12-07 00:33:26,244 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 15 [2021-12-07 00:33:26,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:26,244 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2021-12-07 00:33:26,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:26,245 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2021-12-07 00:33:26,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-07 00:33:26,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:26,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:26,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:33:26,246 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:26,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:26,253 INFO L85 PathProgramCache]: Analyzing trace with hash -334825923, now seen corresponding path program 1 times [2021-12-07 00:33:26,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:26,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553834673] [2021-12-07 00:33:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:26,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:26,297 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 00:33:26,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:26,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553834673] [2021-12-07 00:33:26,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553834673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:26,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:26,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:33:26,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620371007] [2021-12-07 00:33:26,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:26,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:33:26,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:26,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:33:26,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:33:26,300 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:26,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:26,356 INFO L93 Difference]: Finished difference Result 145 states and 178 transitions. [2021-12-07 00:33:26,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:33:26,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-07 00:33:26,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:26,358 INFO L225 Difference]: With dead ends: 145 [2021-12-07 00:33:26,358 INFO L226 Difference]: Without dead ends: 83 [2021-12-07 00:33:26,359 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 00:33:26,361 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 31 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:26,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 276 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:33:26,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-12-07 00:33:26,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2021-12-07 00:33:26,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 66 states have internal predecessors, (78), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-07 00:33:26,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 95 transitions. [2021-12-07 00:33:26,372 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 95 transitions. Word has length 16 [2021-12-07 00:33:26,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:26,372 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 95 transitions. [2021-12-07 00:33:26,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:26,372 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 95 transitions. [2021-12-07 00:33:26,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-07 00:33:26,373 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:26,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:26,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:33:26,374 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:26,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:26,374 INFO L85 PathProgramCache]: Analyzing trace with hash 355054241, now seen corresponding path program 1 times [2021-12-07 00:33:26,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:26,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119682561] [2021-12-07 00:33:26,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:26,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:26,420 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 00:33:26,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:26,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119682561] [2021-12-07 00:33:26,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119682561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:26,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:26,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:33:26,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816677159] [2021-12-07 00:33:26,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:26,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:33:26,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:26,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:33:26,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:33:26,422 INFO L87 Difference]: Start difference. First operand 79 states and 95 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:26,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:26,497 INFO L93 Difference]: Finished difference Result 107 states and 129 transitions. [2021-12-07 00:33:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:33:26,497 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-07 00:33:26,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:26,499 INFO L225 Difference]: With dead ends: 107 [2021-12-07 00:33:26,499 INFO L226 Difference]: Without dead ends: 106 [2021-12-07 00:33:26,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:33:26,500 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 44 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:26,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 314 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:33:26,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-07 00:33:26,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2021-12-07 00:33:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.4) internal successors, (105), 86 states have internal predecessors, (105), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-07 00:33:26,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2021-12-07 00:33:26,513 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 18 [2021-12-07 00:33:26,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:26,513 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2021-12-07 00:33:26,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:26,514 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2021-12-07 00:33:26,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-07 00:33:26,514 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:26,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:26,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 00:33:26,515 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:26,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:26,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1880405543, now seen corresponding path program 1 times [2021-12-07 00:33:26,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:26,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564461873] [2021-12-07 00:33:26,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:26,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:26,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:33:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:26,585 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 00:33:26,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:26,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564461873] [2021-12-07 00:33:26,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564461873] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:26,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:26,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:33:26,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461875770] [2021-12-07 00:33:26,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:26,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:33:26,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:26,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:33:26,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:33:26,587 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (2), 2 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 00:33:26,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:26,616 INFO L93 Difference]: Finished difference Result 136 states and 165 transitions. [2021-12-07 00:33:26,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:33:26,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (2), 2 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 19 [2021-12-07 00:33:26,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:26,618 INFO L225 Difference]: With dead ends: 136 [2021-12-07 00:33:26,618 INFO L226 Difference]: Without dead ends: 106 [2021-12-07 00:33:26,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:33:26,620 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 4 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:26,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 465 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:33:26,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-07 00:33:26,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2021-12-07 00:33:26,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 86 states have internal predecessors, (103), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-07 00:33:26,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 126 transitions. [2021-12-07 00:33:26,632 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 126 transitions. Word has length 19 [2021-12-07 00:33:26,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:26,633 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 126 transitions. [2021-12-07 00:33:26,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (2), 2 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 00:33:26,633 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 126 transitions. [2021-12-07 00:33:26,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-07 00:33:26,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:26,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:26,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:33:26,634 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting multiple_ofErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:26,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:26,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1878220355, now seen corresponding path program 1 times [2021-12-07 00:33:26,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:26,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990567656] [2021-12-07 00:33:26,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:26,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:26,668 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 00:33:26,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:26,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990567656] [2021-12-07 00:33:26,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990567656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:26,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:26,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:33:26,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297713469] [2021-12-07 00:33:26,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:26,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:33:26,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:26,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:33:26,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:33:26,670 INFO L87 Difference]: Start difference. First operand 104 states and 126 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:26,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:26,731 INFO L93 Difference]: Finished difference Result 106 states and 126 transitions. [2021-12-07 00:33:26,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:33:26,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-07 00:33:26,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:26,733 INFO L225 Difference]: With dead ends: 106 [2021-12-07 00:33:26,733 INFO L226 Difference]: Without dead ends: 105 [2021-12-07 00:33:26,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:33:26,734 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 42 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:26,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 283 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:33:26,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-07 00:33:26,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2021-12-07 00:33:26,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 86 states have internal predecessors, (101), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-07 00:33:26,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2021-12-07 00:33:26,742 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 19 [2021-12-07 00:33:26,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:26,742 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2021-12-07 00:33:26,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:26,742 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2021-12-07 00:33:26,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-07 00:33:26,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:26,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:26,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:33:26,743 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:26,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:26,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1361525461, now seen corresponding path program 1 times [2021-12-07 00:33:26,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:26,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973906314] [2021-12-07 00:33:26,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:26,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:26,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:33:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:26,777 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 00:33:26,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:26,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973906314] [2021-12-07 00:33:26,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973906314] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:26,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:26,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:33:26,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790470300] [2021-12-07 00:33:26,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:26,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:33:26,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:26,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:33:26,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:33:26,779 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 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 00:33:26,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:26,808 INFO L93 Difference]: Finished difference Result 143 states and 173 transitions. [2021-12-07 00:33:26,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:33:26,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 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 20 [2021-12-07 00:33:26,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:26,810 INFO L225 Difference]: With dead ends: 143 [2021-12-07 00:33:26,810 INFO L226 Difference]: Without dead ends: 119 [2021-12-07 00:33:26,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 00:33:26,811 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 28 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:26,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 300 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:33:26,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-07 00:33:26,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 114. [2021-12-07 00:33:26,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 84 states have (on average 1.3333333333333333) internal successors, (112), 94 states have internal predecessors, (112), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-12-07 00:33:26,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions. [2021-12-07 00:33:26,819 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 20 [2021-12-07 00:33:26,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:26,819 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 137 transitions. [2021-12-07 00:33:26,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 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 00:33:26,819 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions. [2021-12-07 00:33:26,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-07 00:33:26,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:26,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:26,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:33:26,820 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:26,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:26,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1538837383, now seen corresponding path program 1 times [2021-12-07 00:33:26,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:26,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518170830] [2021-12-07 00:33:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:26,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:26,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:33:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:26,849 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 00:33:26,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:26,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518170830] [2021-12-07 00:33:26,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518170830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:26,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:26,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:33:26,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769878501] [2021-12-07 00:33:26,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:26,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:33:26,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:26,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:33:26,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:33:26,851 INFO L87 Difference]: Start difference. First operand 114 states and 137 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 2 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 00:33:26,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:26,889 INFO L93 Difference]: Finished difference Result 137 states and 167 transitions. [2021-12-07 00:33:26,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:33:26,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 2 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 22 [2021-12-07 00:33:26,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:26,890 INFO L225 Difference]: With dead ends: 137 [2021-12-07 00:33:26,890 INFO L226 Difference]: Without dead ends: 135 [2021-12-07 00:33:26,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 00:33:26,891 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 41 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:26,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 269 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:33:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-12-07 00:33:26,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2021-12-07 00:33:26,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 97 states have (on average 1.3402061855670102) internal successors, (130), 106 states have internal predecessors, (130), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-07 00:33:26,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 159 transitions. [2021-12-07 00:33:26,902 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 159 transitions. Word has length 22 [2021-12-07 00:33:26,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:26,902 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 159 transitions. [2021-12-07 00:33:26,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 2 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 00:33:26,903 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 159 transitions. [2021-12-07 00:33:26,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-07 00:33:26,903 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:26,903 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:26,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:33:26,904 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:26,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:26,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1613355843, now seen corresponding path program 1 times [2021-12-07 00:33:26,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:26,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444859268] [2021-12-07 00:33:26,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:26,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:26,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:26,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444859268] [2021-12-07 00:33:26,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444859268] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:26,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820318865] [2021-12-07 00:33:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:26,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:26,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:26,947 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:26,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:33:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:26,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-07 00:33:26,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:27,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:27,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:27,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820318865] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:33:27,150 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:33:27,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-12-07 00:33:27,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613273038] [2021-12-07 00:33:27,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:27,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-07 00:33:27,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:27,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-07 00:33:27,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:33:27,152 INFO L87 Difference]: Start difference. First operand 129 states and 159 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 8 states have internal predecessors, (37), 5 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:27,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:27,309 INFO L93 Difference]: Finished difference Result 252 states and 314 transitions. [2021-12-07 00:33:27,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 00:33:27,310 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 8 states have internal predecessors, (37), 5 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-07 00:33:27,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:27,311 INFO L225 Difference]: With dead ends: 252 [2021-12-07 00:33:27,311 INFO L226 Difference]: Without dead ends: 143 [2021-12-07 00:33:27,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-12-07 00:33:27,313 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 111 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:27,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 516 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:33:27,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-07 00:33:27,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 140. [2021-12-07 00:33:27,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 106 states have (on average 1.330188679245283) internal successors, (141), 115 states have internal predecessors, (141), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-07 00:33:27,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 172 transitions. [2021-12-07 00:33:27,323 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 172 transitions. Word has length 24 [2021-12-07 00:33:27,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:27,323 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 172 transitions. [2021-12-07 00:33:27,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 8 states have internal predecessors, (37), 5 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:27,323 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 172 transitions. [2021-12-07 00:33:27,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-07 00:33:27,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:27,324 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:27,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:33:27,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-07 00:33:27,525 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:27,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:27,526 INFO L85 PathProgramCache]: Analyzing trace with hash 48447777, now seen corresponding path program 1 times [2021-12-07 00:33:27,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:27,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260705638] [2021-12-07 00:33:27,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:27,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:27,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 00:33:27,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:27,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260705638] [2021-12-07 00:33:27,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260705638] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:27,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133626814] [2021-12-07 00:33:27,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:27,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:27,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:27,571 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:27,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:33:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:27,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-07 00:33:27,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:27,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:27,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:33:27,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133626814] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:27,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:33:27,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 15 [2021-12-07 00:33:27,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444337038] [2021-12-07 00:33:27,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:27,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:33:27,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:27,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:33:27,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:33:27,732 INFO L87 Difference]: Start difference. First operand 140 states and 172 transitions. Second operand has 10 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:27,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:27,853 INFO L93 Difference]: Finished difference Result 163 states and 199 transitions. [2021-12-07 00:33:27,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:33:27,853 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-07 00:33:27,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:27,855 INFO L225 Difference]: With dead ends: 163 [2021-12-07 00:33:27,855 INFO L226 Difference]: Without dead ends: 161 [2021-12-07 00:33:27,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-12-07 00:33:27,856 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 90 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:27,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 359 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:33:27,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-07 00:33:27,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2021-12-07 00:33:27,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 118 states have (on average 1.3135593220338984) internal successors, (155), 127 states have internal predecessors, (155), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-07 00:33:27,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 190 transitions. [2021-12-07 00:33:27,863 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 190 transitions. Word has length 26 [2021-12-07 00:33:27,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:27,863 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 190 transitions. [2021-12-07 00:33:27,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:27,864 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 190 transitions. [2021-12-07 00:33:27,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-07 00:33:27,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:27,864 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:27,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 00:33:28,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:28,067 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:28,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:28,068 INFO L85 PathProgramCache]: Analyzing trace with hash 2143137265, now seen corresponding path program 1 times [2021-12-07 00:33:28,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:28,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024027116] [2021-12-07 00:33:28,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:28,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:28,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:33:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:28,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:28,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024027116] [2021-12-07 00:33:28,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024027116] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:28,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:28,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:33:28,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069765479] [2021-12-07 00:33:28,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:28,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:33:28,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:28,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:33:28,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:33:28,180 INFO L87 Difference]: Start difference. First operand 155 states and 190 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:33:28,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:28,228 INFO L93 Difference]: Finished difference Result 181 states and 225 transitions. [2021-12-07 00:33:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:33:28,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-12-07 00:33:28,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:28,230 INFO L225 Difference]: With dead ends: 181 [2021-12-07 00:33:28,230 INFO L226 Difference]: Without dead ends: 179 [2021-12-07 00:33:28,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:33:28,231 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 40 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:28,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 264 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:33:28,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-12-07 00:33:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 170. [2021-12-07 00:33:28,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 131 states have (on average 1.3053435114503817) internal successors, (171), 139 states have internal predecessors, (171), 20 states have call successors, (20), 11 states have call predecessors, (20), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-07 00:33:28,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 210 transitions. [2021-12-07 00:33:28,240 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 210 transitions. Word has length 27 [2021-12-07 00:33:28,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:28,240 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 210 transitions. [2021-12-07 00:33:28,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:33:28,240 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 210 transitions. [2021-12-07 00:33:28,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-07 00:33:28,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:28,241 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:28,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 00:33:28,241 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting multiple_ofErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:28,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:28,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1501881149, now seen corresponding path program 1 times [2021-12-07 00:33:28,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:28,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441186825] [2021-12-07 00:33:28,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:28,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:28,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:28,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:28,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441186825] [2021-12-07 00:33:28,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441186825] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:28,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535390528] [2021-12-07 00:33:28,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:28,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:28,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:28,291 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:28,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 00:33:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:28,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-07 00:33:28,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:28,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:28,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535390528] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:33:28,630 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:33:28,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2021-12-07 00:33:28,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907008765] [2021-12-07 00:33:28,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:28,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-07 00:33:28,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:28,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-07 00:33:28,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2021-12-07 00:33:28,632 INFO L87 Difference]: Start difference. First operand 170 states and 210 transitions. Second operand has 23 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 14 states have internal predecessors, (65), 8 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:29,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:29,240 INFO L93 Difference]: Finished difference Result 214 states and 267 transitions. [2021-12-07 00:33:29,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-07 00:33:29,241 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 14 states have internal predecessors, (65), 8 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-07 00:33:29,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:29,242 INFO L225 Difference]: With dead ends: 214 [2021-12-07 00:33:29,242 INFO L226 Difference]: Without dead ends: 211 [2021-12-07 00:33:29,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=305, Invalid=1587, Unknown=0, NotChecked=0, Total=1892 [2021-12-07 00:33:29,244 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 315 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:29,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 917 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 00:33:29,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-12-07 00:33:29,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 198. [2021-12-07 00:33:29,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 155 states have (on average 1.2774193548387096) internal successors, (198), 161 states have internal predecessors, (198), 24 states have call successors, (24), 13 states have call predecessors, (24), 12 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-07 00:33:29,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 245 transitions. [2021-12-07 00:33:29,253 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 245 transitions. Word has length 27 [2021-12-07 00:33:29,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:29,253 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 245 transitions. [2021-12-07 00:33:29,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 14 states have internal predecessors, (65), 8 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:29,254 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 245 transitions. [2021-12-07 00:33:29,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-07 00:33:29,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:29,254 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:29,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 00:33:29,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:29,456 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:29,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:29,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1537468884, now seen corresponding path program 1 times [2021-12-07 00:33:29,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:29,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203939149] [2021-12-07 00:33:29,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:29,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:29,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:33:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:29,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:29,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:29,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203939149] [2021-12-07 00:33:29,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203939149] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:29,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901750589] [2021-12-07 00:33:29,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:29,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:29,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:29,618 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:29,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 00:33:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:29,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:33:29,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:29,703 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:33:29,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:29,738 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:33:29,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901750589] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:33:29,738 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:33:29,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2021-12-07 00:33:29,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150908556] [2021-12-07 00:33:29,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:29,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:33:29,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:29,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:33:29,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:33:29,739 INFO L87 Difference]: Start difference. First operand 198 states and 245 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:33:29,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:29,782 INFO L93 Difference]: Finished difference Result 212 states and 260 transitions. [2021-12-07 00:33:29,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:33:29,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-12-07 00:33:29,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:29,784 INFO L225 Difference]: With dead ends: 212 [2021-12-07 00:33:29,784 INFO L226 Difference]: Without dead ends: 164 [2021-12-07 00:33:29,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:33:29,785 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 57 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:29,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 455 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:33:29,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-12-07 00:33:29,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2021-12-07 00:33:29,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.2301587301587302) internal successors, (155), 130 states have internal predecessors, (155), 19 states have call successors, (19), 11 states have call predecessors, (19), 10 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-07 00:33:29,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 192 transitions. [2021-12-07 00:33:29,796 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 192 transitions. Word has length 32 [2021-12-07 00:33:29,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:29,796 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 192 transitions. [2021-12-07 00:33:29,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 7 states have internal predecessors, (41), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:33:29,797 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 192 transitions. [2021-12-07 00:33:29,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-07 00:33:29,797 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:29,797 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:29,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 00:33:29,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:29,998 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:29,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:29,999 INFO L85 PathProgramCache]: Analyzing trace with hash -118239160, now seen corresponding path program 1 times [2021-12-07 00:33:29,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:29,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299419782] [2021-12-07 00:33:29,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:29,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:30,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:33:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:30,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:33:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:33:30,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:30,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299419782] [2021-12-07 00:33:30,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299419782] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:30,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422465855] [2021-12-07 00:33:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:30,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:30,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:30,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:30,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 00:33:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:30,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 00:33:30,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:30,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:30,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:30,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422465855] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:33:30,158 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:33:30,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2021-12-07 00:33:30,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199362936] [2021-12-07 00:33:30,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:30,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-07 00:33:30,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:30,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-07 00:33:30,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:33:30,159 INFO L87 Difference]: Start difference. First operand 160 states and 192 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-07 00:33:30,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:30,238 INFO L93 Difference]: Finished difference Result 174 states and 210 transitions. [2021-12-07 00:33:30,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:33:30,239 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2021-12-07 00:33:30,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:30,240 INFO L225 Difference]: With dead ends: 174 [2021-12-07 00:33:30,240 INFO L226 Difference]: Without dead ends: 162 [2021-12-07 00:33:30,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:33:30,241 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 48 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:30,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 600 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:33:30,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-12-07 00:33:30,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2021-12-07 00:33:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.2222222222222223) internal successors, (154), 130 states have internal predecessors, (154), 19 states have call successors, (19), 11 states have call predecessors, (19), 10 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-07 00:33:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 191 transitions. [2021-12-07 00:33:30,248 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 191 transitions. Word has length 31 [2021-12-07 00:33:30,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:30,248 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 191 transitions. [2021-12-07 00:33:30,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-07 00:33:30,248 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 191 transitions. [2021-12-07 00:33:30,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-07 00:33:30,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:30,249 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:30,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 00:33:30,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-07 00:33:30,449 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:30,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:30,450 INFO L85 PathProgramCache]: Analyzing trace with hash -959786179, now seen corresponding path program 2 times [2021-12-07 00:33:30,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:30,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930930017] [2021-12-07 00:33:30,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:30,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:30,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:30,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930930017] [2021-12-07 00:33:30,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930930017] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:30,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127306832] [2021-12-07 00:33:30,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:33:30,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:30,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:30,509 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:30,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 00:33:30,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:33:30,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:33:30,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-07 00:33:30,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:30,657 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:30,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:30,791 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:30,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127306832] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:33:30,792 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:33:30,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2021-12-07 00:33:30,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347060733] [2021-12-07 00:33:30,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:30,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-07 00:33:30,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:30,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-07 00:33:30,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2021-12-07 00:33:30,793 INFO L87 Difference]: Start difference. First operand 160 states and 191 transitions. Second operand has 26 states, 25 states have (on average 2.92) internal successors, (73), 15 states have internal predecessors, (73), 11 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:31,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:31,146 INFO L93 Difference]: Finished difference Result 218 states and 268 transitions. [2021-12-07 00:33:31,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-07 00:33:31,146 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.92) internal successors, (73), 15 states have internal predecessors, (73), 11 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-07 00:33:31,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:31,148 INFO L225 Difference]: With dead ends: 218 [2021-12-07 00:33:31,148 INFO L226 Difference]: Without dead ends: 217 [2021-12-07 00:33:31,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=204, Invalid=1202, Unknown=0, NotChecked=0, Total=1406 [2021-12-07 00:33:31,149 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 297 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:31,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 573 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:33:31,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-07 00:33:31,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 205. [2021-12-07 00:33:31,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 162 states have (on average 1.2098765432098766) internal successors, (196), 166 states have internal predecessors, (196), 25 states have call successors, (25), 14 states have call predecessors, (25), 13 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-07 00:33:31,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 245 transitions. [2021-12-07 00:33:31,160 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 245 transitions. Word has length 32 [2021-12-07 00:33:31,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:31,160 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 245 transitions. [2021-12-07 00:33:31,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.92) internal successors, (73), 15 states have internal predecessors, (73), 11 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:31,161 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 245 transitions. [2021-12-07 00:33:31,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-07 00:33:31,161 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:31,161 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:31,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 00:33:31,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-07 00:33:31,363 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:31,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:31,365 INFO L85 PathProgramCache]: Analyzing trace with hash 644683350, now seen corresponding path program 1 times [2021-12-07 00:33:31,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:31,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821960055] [2021-12-07 00:33:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:31,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:31,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:33:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:31,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:33:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:31,436 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 00:33:31,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:31,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821960055] [2021-12-07 00:33:31,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821960055] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:31,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451664096] [2021-12-07 00:33:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:31,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:31,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:31,438 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:31,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 00:33:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:31,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:33:31,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:31,506 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 00:33:31,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:31,554 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 00:33:31,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451664096] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:33:31,555 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:33:31,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-12-07 00:33:31,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396059365] [2021-12-07 00:33:31,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:31,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-07 00:33:31,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:31,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-07 00:33:31,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:33:31,556 INFO L87 Difference]: Start difference. First operand 205 states and 245 transitions. Second operand has 13 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-07 00:33:31,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:31,600 INFO L93 Difference]: Finished difference Result 215 states and 257 transitions. [2021-12-07 00:33:31,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:33:31,600 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2021-12-07 00:33:31,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:31,601 INFO L225 Difference]: With dead ends: 215 [2021-12-07 00:33:31,601 INFO L226 Difference]: Without dead ends: 214 [2021-12-07 00:33:31,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:33:31,602 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 41 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:31,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 466 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:33:31,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-12-07 00:33:31,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 211. [2021-12-07 00:33:31,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 167 states have (on average 1.2035928143712575) internal successors, (201), 170 states have internal predecessors, (201), 25 states have call successors, (25), 14 states have call predecessors, (25), 14 states have return successors, (26), 26 states have call predecessors, (26), 24 states have call successors, (26) [2021-12-07 00:33:31,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 252 transitions. [2021-12-07 00:33:31,611 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 252 transitions. Word has length 32 [2021-12-07 00:33:31,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:31,611 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 252 transitions. [2021-12-07 00:33:31,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-07 00:33:31,611 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 252 transitions. [2021-12-07 00:33:31,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-07 00:33:31,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:31,611 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:31,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 00:33:31,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-07 00:33:31,813 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:31,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:31,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1489652536, now seen corresponding path program 1 times [2021-12-07 00:33:31,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:31,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687111367] [2021-12-07 00:33:31,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:31,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:31,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:33:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:31,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:33:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:31,893 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 00:33:31,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:31,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687111367] [2021-12-07 00:33:31,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687111367] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:31,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489789453] [2021-12-07 00:33:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:31,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:31,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:31,894 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:31,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 00:33:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:31,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:33:31,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:31,968 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 00:33:31,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:32,029 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 00:33:32,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489789453] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:33:32,030 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:33:32,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-12-07 00:33:32,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639075315] [2021-12-07 00:33:32,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:32,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-07 00:33:32,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:32,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-07 00:33:32,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:33:32,031 INFO L87 Difference]: Start difference. First operand 211 states and 252 transitions. Second operand has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-07 00:33:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:32,088 INFO L93 Difference]: Finished difference Result 213 states and 255 transitions. [2021-12-07 00:33:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:33:32,089 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2021-12-07 00:33:32,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:32,090 INFO L225 Difference]: With dead ends: 213 [2021-12-07 00:33:32,090 INFO L226 Difference]: Without dead ends: 208 [2021-12-07 00:33:32,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:33:32,091 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 30 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:32,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 567 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:33:32,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-07 00:33:32,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2021-12-07 00:33:32,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 164 states have (on average 1.1951219512195121) internal successors, (196), 167 states have internal predecessors, (196), 25 states have call successors, (25), 14 states have call predecessors, (25), 14 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) [2021-12-07 00:33:32,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 246 transitions. [2021-12-07 00:33:32,105 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 246 transitions. Word has length 33 [2021-12-07 00:33:32,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:32,105 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 246 transitions. [2021-12-07 00:33:32,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-07 00:33:32,106 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 246 transitions. [2021-12-07 00:33:32,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-07 00:33:32,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:32,107 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:32,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 00:33:32,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-07 00:33:32,308 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:32,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:32,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1095335930, now seen corresponding path program 1 times [2021-12-07 00:33:32,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:32,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717204006] [2021-12-07 00:33:32,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:32,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-07 00:33:32,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:32,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717204006] [2021-12-07 00:33:32,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717204006] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:32,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719711528] [2021-12-07 00:33:32,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:32,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:32,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:32,343 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:32,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 00:33:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:32,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:33:32,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:32,452 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-07 00:33:32,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:32,493 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-07 00:33:32,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719711528] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:33:32,493 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:33:32,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-07 00:33:32,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194987955] [2021-12-07 00:33:32,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:32,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:33:32,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:32,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:33:32,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:33:32,494 INFO L87 Difference]: Start difference. First operand 207 states and 246 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:32,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:32,552 INFO L93 Difference]: Finished difference Result 427 states and 527 transitions. [2021-12-07 00:33:32,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:33:32,552 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-12-07 00:33:32,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:32,554 INFO L225 Difference]: With dead ends: 427 [2021-12-07 00:33:32,554 INFO L226 Difference]: Without dead ends: 240 [2021-12-07 00:33:32,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:33:32,555 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 36 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:32,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 398 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:33:32,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-12-07 00:33:32,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 214. [2021-12-07 00:33:32,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 170 states have (on average 1.1823529411764706) internal successors, (201), 173 states have internal predecessors, (201), 25 states have call successors, (25), 15 states have call predecessors, (25), 15 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) [2021-12-07 00:33:32,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 251 transitions. [2021-12-07 00:33:32,565 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 251 transitions. Word has length 38 [2021-12-07 00:33:32,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:32,565 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 251 transitions. [2021-12-07 00:33:32,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:32,565 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 251 transitions. [2021-12-07 00:33:32,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-07 00:33:32,566 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:32,566 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:32,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-07 00:33:32,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:32,767 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:32,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:32,767 INFO L85 PathProgramCache]: Analyzing trace with hash -350622166, now seen corresponding path program 1 times [2021-12-07 00:33:32,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:32,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484816397] [2021-12-07 00:33:32,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:32,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:32,831 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:32,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:32,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484816397] [2021-12-07 00:33:32,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484816397] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:32,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839339889] [2021-12-07 00:33:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:32,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:32,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:32,832 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:32,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 00:33:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:32,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-07 00:33:32,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:32,966 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-07 00:33:32,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:33:32,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839339889] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:32,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:33:32,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2021-12-07 00:33:32,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927719860] [2021-12-07 00:33:32,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:32,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:33:32,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:32,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:33:32,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:33:32,967 INFO L87 Difference]: Start difference. First operand 214 states and 251 transitions. Second operand has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (4), 3 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 00:33:33,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:33,066 INFO L93 Difference]: Finished difference Result 227 states and 265 transitions. [2021-12-07 00:33:33,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:33:33,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (4), 3 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 40 [2021-12-07 00:33:33,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:33,068 INFO L225 Difference]: With dead ends: 227 [2021-12-07 00:33:33,068 INFO L226 Difference]: Without dead ends: 226 [2021-12-07 00:33:33,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2021-12-07 00:33:33,069 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 59 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:33,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 344 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:33:33,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-12-07 00:33:33,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 213. [2021-12-07 00:33:33,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 170 states have (on average 1.1588235294117648) internal successors, (197), 172 states have internal predecessors, (197), 25 states have call successors, (25), 15 states have call predecessors, (25), 15 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) [2021-12-07 00:33:33,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 247 transitions. [2021-12-07 00:33:33,078 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 247 transitions. Word has length 40 [2021-12-07 00:33:33,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:33,078 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 247 transitions. [2021-12-07 00:33:33,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (4), 3 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 00:33:33,078 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 247 transitions. [2021-12-07 00:33:33,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-07 00:33:33,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:33,079 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:33,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-07 00:33:33,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:33,281 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:33,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:33,282 INFO L85 PathProgramCache]: Analyzing trace with hash 287216546, now seen corresponding path program 1 times [2021-12-07 00:33:33,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:33,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245171907] [2021-12-07 00:33:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:33,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:33,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:33:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:33,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:33:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:33,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:33,371 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:33:33,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:33,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245171907] [2021-12-07 00:33:33,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245171907] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:33,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323777150] [2021-12-07 00:33:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:33,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:33,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:33,373 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:33,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-07 00:33:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:33,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-07 00:33:33,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:33:33,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:33,582 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:33:33,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323777150] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:33:33,583 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:33:33,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2021-12-07 00:33:33,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596621282] [2021-12-07 00:33:33,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:33,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-07 00:33:33,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:33,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-07 00:33:33,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-12-07 00:33:33,584 INFO L87 Difference]: Start difference. First operand 213 states and 247 transitions. Second operand has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-07 00:33:33,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:33,687 INFO L93 Difference]: Finished difference Result 228 states and 265 transitions. [2021-12-07 00:33:33,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:33:33,687 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 44 [2021-12-07 00:33:33,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:33,689 INFO L225 Difference]: With dead ends: 228 [2021-12-07 00:33:33,689 INFO L226 Difference]: Without dead ends: 223 [2021-12-07 00:33:33,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2021-12-07 00:33:33,690 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 80 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:33,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 791 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:33:33,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-12-07 00:33:33,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2021-12-07 00:33:33,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 178 states have (on average 1.151685393258427) internal successors, (205), 180 states have internal predecessors, (205), 25 states have call successors, (25), 15 states have call predecessors, (25), 17 states have return successors, (27), 27 states have call predecessors, (27), 24 states have call successors, (27) [2021-12-07 00:33:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 257 transitions. [2021-12-07 00:33:33,705 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 257 transitions. Word has length 44 [2021-12-07 00:33:33,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:33,705 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 257 transitions. [2021-12-07 00:33:33,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-07 00:33:33,705 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 257 transitions. [2021-12-07 00:33:33,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-07 00:33:33,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:33,706 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:33,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-07 00:33:33,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:33,906 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:33,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:33,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1599875706, now seen corresponding path program 2 times [2021-12-07 00:33:33,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:33,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281931903] [2021-12-07 00:33:33,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:33,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:33,971 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:33:33,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:33,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281931903] [2021-12-07 00:33:33,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281931903] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:33,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817919291] [2021-12-07 00:33:33,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:33:33,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:33,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:33,973 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:33,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-07 00:33:33,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:33:33,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:33:33,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-07 00:33:33,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-07 00:33:34,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:34,263 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-07 00:33:34,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817919291] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:33:34,263 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:33:34,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2021-12-07 00:33:34,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696369384] [2021-12-07 00:33:34,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:34,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-07 00:33:34,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:34,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-07 00:33:34,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2021-12-07 00:33:34,264 INFO L87 Difference]: Start difference. First operand 223 states and 257 transitions. Second operand has 34 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 20 states have internal predecessors, (98), 16 states have call successors, (16), 14 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:35,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:35,700 INFO L93 Difference]: Finished difference Result 506 states and 603 transitions. [2021-12-07 00:33:35,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-12-07 00:33:35,701 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 20 states have internal predecessors, (98), 16 states have call successors, (16), 14 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-12-07 00:33:35,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:35,703 INFO L225 Difference]: With dead ends: 506 [2021-12-07 00:33:35,703 INFO L226 Difference]: Without dead ends: 504 [2021-12-07 00:33:35,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1525 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1367, Invalid=6115, Unknown=0, NotChecked=0, Total=7482 [2021-12-07 00:33:35,706 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 635 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 2468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:35,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 1102 Invalid, 2468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:33:35,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-12-07 00:33:35,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 452. [2021-12-07 00:33:35,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 364 states have (on average 1.120879120879121) internal successors, (408), 364 states have internal predecessors, (408), 53 states have call successors, (53), 32 states have call predecessors, (53), 34 states have return successors, (55), 55 states have call predecessors, (55), 52 states have call successors, (55) [2021-12-07 00:33:35,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 516 transitions. [2021-12-07 00:33:35,724 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 516 transitions. Word has length 46 [2021-12-07 00:33:35,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:35,724 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 516 transitions. [2021-12-07 00:33:35,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 20 states have internal predecessors, (98), 16 states have call successors, (16), 14 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:35,724 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 516 transitions. [2021-12-07 00:33:35,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 00:33:35,725 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:35,725 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:35,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-07 00:33:35,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-07 00:33:35,926 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:35,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:35,926 INFO L85 PathProgramCache]: Analyzing trace with hash -2078564830, now seen corresponding path program 2 times [2021-12-07 00:33:35,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:35,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737352660] [2021-12-07 00:33:35,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:35,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:35,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:33:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:35,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:33:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:35,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:36,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:36,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:36,045 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 00:33:36,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:36,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737352660] [2021-12-07 00:33:36,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737352660] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:36,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557358054] [2021-12-07 00:33:36,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:33:36,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:36,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:36,046 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:36,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-07 00:33:36,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:33:36,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:33:36,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-07 00:33:36,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:36,234 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 00:33:36,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 00:33:36,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557358054] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:33:36,613 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:33:36,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 31 [2021-12-07 00:33:36,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94729219] [2021-12-07 00:33:36,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:36,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-07 00:33:36,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:36,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-07 00:33:36,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2021-12-07 00:33:36,615 INFO L87 Difference]: Start difference. First operand 452 states and 516 transitions. Second operand has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 30 states have internal predecessors, (103), 10 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) [2021-12-07 00:33:36,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:36,864 INFO L93 Difference]: Finished difference Result 481 states and 552 transitions. [2021-12-07 00:33:36,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-07 00:33:36,865 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 30 states have internal predecessors, (103), 10 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) Word has length 68 [2021-12-07 00:33:36,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:36,867 INFO L225 Difference]: With dead ends: 481 [2021-12-07 00:33:36,867 INFO L226 Difference]: Without dead ends: 472 [2021-12-07 00:33:36,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=414, Invalid=1748, Unknown=0, NotChecked=0, Total=2162 [2021-12-07 00:33:36,868 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 176 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:36,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 646 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:33:36,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-12-07 00:33:36,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2021-12-07 00:33:36,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 380 states have (on average 1.1157894736842104) internal successors, (424), 380 states have internal predecessors, (424), 53 states have call successors, (53), 32 states have call predecessors, (53), 38 states have return successors, (59), 59 states have call predecessors, (59), 52 states have call successors, (59) [2021-12-07 00:33:36,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 536 transitions. [2021-12-07 00:33:36,883 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 536 transitions. Word has length 68 [2021-12-07 00:33:36,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:36,884 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 536 transitions. [2021-12-07 00:33:36,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 30 states have internal predecessors, (103), 10 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) [2021-12-07 00:33:36,884 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 536 transitions. [2021-12-07 00:33:36,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-07 00:33:36,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:36,886 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:36,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-07 00:33:37,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-07 00:33:37,087 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:37,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:37,089 INFO L85 PathProgramCache]: Analyzing trace with hash 879219490, now seen corresponding path program 3 times [2021-12-07 00:33:37,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:37,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658418078] [2021-12-07 00:33:37,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:37,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:37,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:33:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:37,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:33:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:37,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:37,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:37,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:37,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:37,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:37,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:37,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-12-07 00:33:37,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:37,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658418078] [2021-12-07 00:33:37,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658418078] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:37,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017874091] [2021-12-07 00:33:37,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:33:37,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:37,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:37,420 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:37,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-07 00:33:37,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-12-07 00:33:37,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:33:37,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-07 00:33:37,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:37,802 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-12-07 00:33:37,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:41,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017874091] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:41,122 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:33:41,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2021-12-07 00:33:41,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811672027] [2021-12-07 00:33:41,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:41,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-07 00:33:41,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:41,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-07 00:33:41,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1112, Unknown=1, NotChecked=0, Total=1260 [2021-12-07 00:33:41,124 INFO L87 Difference]: Start difference. First operand 472 states and 536 transitions. Second operand has 31 states, 30 states have (on average 3.0) internal successors, (90), 30 states have internal predecessors, (90), 5 states have call successors, (5), 2 states have call predecessors, (5), 9 states have return successors, (17), 17 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-07 00:33:41,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:41,715 INFO L93 Difference]: Finished difference Result 481 states and 546 transitions. [2021-12-07 00:33:41,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-07 00:33:41,716 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.0) internal successors, (90), 30 states have internal predecessors, (90), 5 states have call successors, (5), 2 states have call predecessors, (5), 9 states have return successors, (17), 17 states have call predecessors, (17), 4 states have call successors, (17) Word has length 116 [2021-12-07 00:33:41,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:41,718 INFO L225 Difference]: With dead ends: 481 [2021-12-07 00:33:41,718 INFO L226 Difference]: Without dead ends: 478 [2021-12-07 00:33:41,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 123 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=354, Invalid=2401, Unknown=1, NotChecked=0, Total=2756 [2021-12-07 00:33:41,720 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 105 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:41,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 1143 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 00:33:41,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-12-07 00:33:41,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 477. [2021-12-07 00:33:41,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 384 states have (on average 1.1145833333333333) internal successors, (428), 384 states have internal predecessors, (428), 53 states have call successors, (53), 32 states have call predecessors, (53), 39 states have return successors, (60), 60 states have call predecessors, (60), 52 states have call successors, (60) [2021-12-07 00:33:41,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 541 transitions. [2021-12-07 00:33:41,736 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 541 transitions. Word has length 116 [2021-12-07 00:33:41,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:41,736 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 541 transitions. [2021-12-07 00:33:41,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.0) internal successors, (90), 30 states have internal predecessors, (90), 5 states have call successors, (5), 2 states have call predecessors, (5), 9 states have return successors, (17), 17 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-07 00:33:41,736 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 541 transitions. [2021-12-07 00:33:41,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-07 00:33:41,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:41,738 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:41,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-07 00:33:41,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-07 00:33:41,939 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:41,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:41,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1601731370, now seen corresponding path program 4 times [2021-12-07 00:33:41,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:41,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246223203] [2021-12-07 00:33:41,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:41,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:41,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:33:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:42,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 00:33:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:42,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:42,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:42,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:42,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:42,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:42,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:42,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:42,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-12-07 00:33:42,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:42,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246223203] [2021-12-07 00:33:42,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246223203] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:42,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074472286] [2021-12-07 00:33:42,328 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 00:33:42,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:42,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:42,329 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:42,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-07 00:33:42,397 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 00:33:42,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:33:42,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-07 00:33:42,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-12-07 00:33:42,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:43,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074472286] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:43,724 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:33:43,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 33 [2021-12-07 00:33:43,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281757013] [2021-12-07 00:33:43,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:43,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-07 00:33:43,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:43,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-07 00:33:43,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2021-12-07 00:33:43,726 INFO L87 Difference]: Start difference. First operand 477 states and 541 transitions. Second operand has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 33 states have internal predecessors, (97), 5 states have call successors, (6), 2 states have call predecessors, (6), 10 states have return successors, (19), 19 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-07 00:33:44,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:44,382 INFO L93 Difference]: Finished difference Result 486 states and 551 transitions. [2021-12-07 00:33:44,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-07 00:33:44,383 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 33 states have internal predecessors, (97), 5 states have call successors, (6), 2 states have call predecessors, (6), 10 states have return successors, (19), 19 states have call predecessors, (19), 4 states have call successors, (19) Word has length 142 [2021-12-07 00:33:44,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:44,385 INFO L225 Difference]: With dead ends: 486 [2021-12-07 00:33:44,385 INFO L226 Difference]: Without dead ends: 483 [2021-12-07 00:33:44,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 150 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=303, Invalid=2667, Unknown=0, NotChecked=0, Total=2970 [2021-12-07 00:33:44,386 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 115 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:44,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 1458 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 00:33:44,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-12-07 00:33:44,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 482. [2021-12-07 00:33:44,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 388 states have (on average 1.1134020618556701) internal successors, (432), 388 states have internal predecessors, (432), 53 states have call successors, (53), 32 states have call predecessors, (53), 40 states have return successors, (61), 61 states have call predecessors, (61), 52 states have call successors, (61) [2021-12-07 00:33:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 546 transitions. [2021-12-07 00:33:44,402 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 546 transitions. Word has length 142 [2021-12-07 00:33:44,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:44,402 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 546 transitions. [2021-12-07 00:33:44,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 33 states have internal predecessors, (97), 5 states have call successors, (6), 2 states have call predecessors, (6), 10 states have return successors, (19), 19 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-07 00:33:44,402 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 546 transitions. [2021-12-07 00:33:44,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-07 00:33:44,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:44,404 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:44,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-07 00:33:44,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-07 00:33:44,605 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:44,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:44,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1195834786, now seen corresponding path program 5 times [2021-12-07 00:33:44,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:44,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867935862] [2021-12-07 00:33:44,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:44,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:44,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:33:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:44,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:33:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:44,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:44,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:44,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:44,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:44,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:44,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:44,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:44,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:45,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:45,045 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2021-12-07 00:33:45,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:45,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867935862] [2021-12-07 00:33:45,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867935862] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:45,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107917196] [2021-12-07 00:33:45,045 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 00:33:45,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:45,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:45,046 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:45,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-07 00:33:45,122 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-12-07 00:33:45,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:33:45,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-07 00:33:45,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:45,597 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2021-12-07 00:33:45,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:46,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107917196] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:46,783 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:33:46,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 36 [2021-12-07 00:33:46,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147693336] [2021-12-07 00:33:46,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:46,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-07 00:33:46,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:46,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-07 00:33:46,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2021-12-07 00:33:46,786 INFO L87 Difference]: Start difference. First operand 482 states and 546 transitions. Second operand has 37 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 5 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (21), 21 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-07 00:33:47,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:47,555 INFO L93 Difference]: Finished difference Result 491 states and 556 transitions. [2021-12-07 00:33:47,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-07 00:33:47,555 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 5 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (21), 21 states have call predecessors, (21), 4 states have call successors, (21) Word has length 140 [2021-12-07 00:33:47,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:47,558 INFO L225 Difference]: With dead ends: 491 [2021-12-07 00:33:47,558 INFO L226 Difference]: Without dead ends: 488 [2021-12-07 00:33:47,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 144 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=334, Invalid=3206, Unknown=0, NotChecked=0, Total=3540 [2021-12-07 00:33:47,560 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 159 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:47,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 1364 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 00:33:47,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-12-07 00:33:47,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2021-12-07 00:33:47,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 392 states have (on average 1.1122448979591837) internal successors, (436), 392 states have internal predecessors, (436), 53 states have call successors, (53), 32 states have call predecessors, (53), 41 states have return successors, (62), 62 states have call predecessors, (62), 52 states have call successors, (62) [2021-12-07 00:33:47,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 551 transitions. [2021-12-07 00:33:47,582 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 551 transitions. Word has length 140 [2021-12-07 00:33:47,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:47,582 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 551 transitions. [2021-12-07 00:33:47,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.888888888888889) internal successors, (104), 36 states have internal predecessors, (104), 5 states have call successors, (5), 2 states have call predecessors, (5), 11 states have return successors, (21), 21 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-07 00:33:47,582 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 551 transitions. [2021-12-07 00:33:47,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-07 00:33:47,585 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:47,585 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:47,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-07 00:33:47,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:47,786 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:47,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:47,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1178697302, now seen corresponding path program 6 times [2021-12-07 00:33:47,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:47,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946564994] [2021-12-07 00:33:47,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:47,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:47,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:33:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:47,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 00:33:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:47,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:47,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:47,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:48,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:48,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:48,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:48,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:48,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:48,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:48,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 0 proven. 517 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-12-07 00:33:48,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:48,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946564994] [2021-12-07 00:33:48,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946564994] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:48,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893551965] [2021-12-07 00:33:48,314 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 00:33:48,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:48,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:48,314 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:48,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-07 00:33:48,419 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-12-07 00:33:48,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:33:48,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 50 conjunts are in the unsatisfiable core [2021-12-07 00:33:48,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 0 proven. 517 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-12-07 00:33:49,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:50,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893551965] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:50,428 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:33:50,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 39 [2021-12-07 00:33:50,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753370029] [2021-12-07 00:33:50,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:50,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-07 00:33:50,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:50,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-07 00:33:50,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1594, Unknown=0, NotChecked=0, Total=1722 [2021-12-07 00:33:50,430 INFO L87 Difference]: Start difference. First operand 487 states and 551 transitions. Second operand has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 39 states have internal predecessors, (111), 5 states have call successors, (6), 2 states have call predecessors, (6), 12 states have return successors, (23), 23 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-07 00:33:51,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:51,247 INFO L93 Difference]: Finished difference Result 496 states and 561 transitions. [2021-12-07 00:33:51,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-07 00:33:51,247 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 39 states have internal predecessors, (111), 5 states have call successors, (6), 2 states have call predecessors, (6), 12 states have return successors, (23), 23 states have call predecessors, (23), 4 states have call successors, (23) Word has length 166 [2021-12-07 00:33:51,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:51,249 INFO L225 Difference]: With dead ends: 496 [2021-12-07 00:33:51,249 INFO L226 Difference]: Without dead ends: 493 [2021-12-07 00:33:51,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 174 SyntacticMatches, 9 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=365, Invalid=3795, Unknown=0, NotChecked=0, Total=4160 [2021-12-07 00:33:51,251 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 174 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:51,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 1322 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 00:33:51,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-12-07 00:33:51,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 492. [2021-12-07 00:33:51,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 396 states have (on average 1.1111111111111112) internal successors, (440), 396 states have internal predecessors, (440), 53 states have call successors, (53), 32 states have call predecessors, (53), 42 states have return successors, (63), 63 states have call predecessors, (63), 52 states have call successors, (63) [2021-12-07 00:33:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 556 transitions. [2021-12-07 00:33:51,266 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 556 transitions. Word has length 166 [2021-12-07 00:33:51,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:51,266 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 556 transitions. [2021-12-07 00:33:51,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 39 states have internal predecessors, (111), 5 states have call successors, (6), 2 states have call predecessors, (6), 12 states have return successors, (23), 23 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-07 00:33:51,266 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 556 transitions. [2021-12-07 00:33:51,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-07 00:33:51,268 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:51,268 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:51,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-07 00:33:51,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-07 00:33:51,470 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:51,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:51,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1895725022, now seen corresponding path program 7 times [2021-12-07 00:33:51,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:51,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291739858] [2021-12-07 00:33:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:51,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:51,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:33:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:51,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:33:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:51,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:51,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:51,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:51,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:51,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:51,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:51,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:51,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:52,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:52,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:52,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 0 proven. 433 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-07 00:33:52,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:52,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291739858] [2021-12-07 00:33:52,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291739858] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:52,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86360293] [2021-12-07 00:33:52,116 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 00:33:52,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:52,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:52,117 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:52,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-07 00:33:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:52,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 50 conjunts are in the unsatisfiable core [2021-12-07 00:33:52,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:52,920 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 0 proven. 433 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-07 00:33:52,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:54,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86360293] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:54,717 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:33:54,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 42 [2021-12-07 00:33:54,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810079726] [2021-12-07 00:33:54,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:54,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-07 00:33:54,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:54,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-07 00:33:54,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1842, Unknown=0, NotChecked=0, Total=1980 [2021-12-07 00:33:54,719 INFO L87 Difference]: Start difference. First operand 492 states and 556 transitions. Second operand has 43 states, 42 states have (on average 2.8095238095238093) internal successors, (118), 42 states have internal predecessors, (118), 5 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (25), 25 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-07 00:33:55,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:55,718 INFO L93 Difference]: Finished difference Result 501 states and 566 transitions. [2021-12-07 00:33:55,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-07 00:33:55,719 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.8095238095238093) internal successors, (118), 42 states have internal predecessors, (118), 5 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (25), 25 states have call predecessors, (25), 4 states have call successors, (25) Word has length 164 [2021-12-07 00:33:55,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:55,721 INFO L225 Difference]: With dead ends: 501 [2021-12-07 00:33:55,721 INFO L226 Difference]: Without dead ends: 498 [2021-12-07 00:33:55,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 168 SyntacticMatches, 10 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=396, Invalid=4434, Unknown=0, NotChecked=0, Total=4830 [2021-12-07 00:33:55,723 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 187 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:55,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 1671 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 00:33:55,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-12-07 00:33:55,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 497. [2021-12-07 00:33:55,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 400 states have (on average 1.11) internal successors, (444), 400 states have internal predecessors, (444), 53 states have call successors, (53), 32 states have call predecessors, (53), 43 states have return successors, (64), 64 states have call predecessors, (64), 52 states have call successors, (64) [2021-12-07 00:33:55,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 561 transitions. [2021-12-07 00:33:55,737 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 561 transitions. Word has length 164 [2021-12-07 00:33:55,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:55,738 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 561 transitions. [2021-12-07 00:33:55,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.8095238095238093) internal successors, (118), 42 states have internal predecessors, (118), 5 states have call successors, (5), 2 states have call predecessors, (5), 13 states have return successors, (25), 25 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-07 00:33:55,738 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 561 transitions. [2021-12-07 00:33:55,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-07 00:33:55,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:55,740 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:55,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-07 00:33:55,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-07 00:33:55,940 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:33:55,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:55,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1407733590, now seen corresponding path program 8 times [2021-12-07 00:33:55,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:55,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231121190] [2021-12-07 00:33:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:55,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:33:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:33:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:33:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,600 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 0 proven. 502 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2021-12-07 00:33:56,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:56,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231121190] [2021-12-07 00:33:56,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231121190] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:56,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585863924] [2021-12-07 00:33:56,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:33:56,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:56,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:56,601 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:56,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-07 00:33:56,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:33:56,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:33:56,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-07 00:33:56,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 0 proven. 502 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2021-12-07 00:33:57,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:59,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585863924] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:59,632 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:33:59,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 45 [2021-12-07 00:33:59,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706322967] [2021-12-07 00:33:59,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:59,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-07 00:33:59,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:59,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-07 00:33:59,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2108, Unknown=0, NotChecked=0, Total=2256 [2021-12-07 00:33:59,634 INFO L87 Difference]: Start difference. First operand 497 states and 561 transitions. Second operand has 46 states, 45 states have (on average 2.7777777777777777) internal successors, (125), 45 states have internal predecessors, (125), 5 states have call successors, (5), 2 states have call predecessors, (5), 14 states have return successors, (27), 27 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-07 00:34:00,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:34:00,909 INFO L93 Difference]: Finished difference Result 506 states and 571 transitions. [2021-12-07 00:34:00,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-07 00:34:00,909 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.7777777777777777) internal successors, (125), 45 states have internal predecessors, (125), 5 states have call successors, (5), 2 states have call predecessors, (5), 14 states have return successors, (27), 27 states have call predecessors, (27), 4 states have call successors, (27) Word has length 176 [2021-12-07 00:34:00,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:34:00,911 INFO L225 Difference]: With dead ends: 506 [2021-12-07 00:34:00,911 INFO L226 Difference]: Without dead ends: 503 [2021-12-07 00:34:00,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 180 SyntacticMatches, 11 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=427, Invalid=5123, Unknown=0, NotChecked=0, Total=5550 [2021-12-07 00:34:00,914 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 199 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:34:00,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 1897 Invalid, 2113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:34:00,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-12-07 00:34:00,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 502. [2021-12-07 00:34:00,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 404 states have (on average 1.108910891089109) internal successors, (448), 404 states have internal predecessors, (448), 53 states have call successors, (53), 32 states have call predecessors, (53), 44 states have return successors, (65), 65 states have call predecessors, (65), 52 states have call successors, (65) [2021-12-07 00:34:00,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 566 transitions. [2021-12-07 00:34:00,928 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 566 transitions. Word has length 176 [2021-12-07 00:34:00,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:34:00,929 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 566 transitions. [2021-12-07 00:34:00,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.7777777777777777) internal successors, (125), 45 states have internal predecessors, (125), 5 states have call successors, (5), 2 states have call predecessors, (5), 14 states have return successors, (27), 27 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-07 00:34:00,929 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 566 transitions. [2021-12-07 00:34:00,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-07 00:34:00,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:00,931 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:34:00,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-07 00:34:01,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-07 00:34:01,132 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:34:01,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:01,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1969189538, now seen corresponding path program 9 times [2021-12-07 00:34:01,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:01,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940661802] [2021-12-07 00:34:01,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:01,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:01,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:34:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:01,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:34:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:01,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:01,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:01,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:01,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:01,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:01,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:01,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:01,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:01,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:01,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:01,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:01,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:01,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:01,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2021-12-07 00:34:01,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:01,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940661802] [2021-12-07 00:34:01,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940661802] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:34:01,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479740414] [2021-12-07 00:34:01,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:34:01,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:01,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:34:01,749 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:34:01,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-07 00:34:01,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-12-07 00:34:01,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:34:01,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-07 00:34:01,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:34:02,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2021-12-07 00:34:02,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:34:05,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479740414] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:34:05,315 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:34:05,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 48 [2021-12-07 00:34:05,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861921042] [2021-12-07 00:34:05,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:34:05,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-07 00:34:05,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:05,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-07 00:34:05,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2392, Unknown=0, NotChecked=0, Total=2550 [2021-12-07 00:34:05,317 INFO L87 Difference]: Start difference. First operand 502 states and 566 transitions. Second operand has 49 states, 48 states have (on average 2.75) internal successors, (132), 48 states have internal predecessors, (132), 5 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (29), 29 states have call predecessors, (29), 4 states have call successors, (29) [2021-12-07 00:34:06,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:34:06,667 INFO L93 Difference]: Finished difference Result 511 states and 576 transitions. [2021-12-07 00:34:06,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-07 00:34:06,667 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.75) internal successors, (132), 48 states have internal predecessors, (132), 5 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (29), 29 states have call predecessors, (29), 4 states have call successors, (29) Word has length 188 [2021-12-07 00:34:06,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:34:06,669 INFO L225 Difference]: With dead ends: 511 [2021-12-07 00:34:06,669 INFO L226 Difference]: Without dead ends: 508 [2021-12-07 00:34:06,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 192 SyntacticMatches, 12 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=458, Invalid=5862, Unknown=0, NotChecked=0, Total=6320 [2021-12-07 00:34:06,671 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 213 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:34:06,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 2153 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:34:06,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-12-07 00:34:06,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2021-12-07 00:34:06,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 408 states have (on average 1.107843137254902) internal successors, (452), 408 states have internal predecessors, (452), 53 states have call successors, (53), 32 states have call predecessors, (53), 45 states have return successors, (66), 66 states have call predecessors, (66), 52 states have call successors, (66) [2021-12-07 00:34:06,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 571 transitions. [2021-12-07 00:34:06,686 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 571 transitions. Word has length 188 [2021-12-07 00:34:06,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:34:06,686 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 571 transitions. [2021-12-07 00:34:06,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.75) internal successors, (132), 48 states have internal predecessors, (132), 5 states have call successors, (5), 2 states have call predecessors, (5), 15 states have return successors, (29), 29 states have call predecessors, (29), 4 states have call successors, (29) [2021-12-07 00:34:06,686 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 571 transitions. [2021-12-07 00:34:06,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-12-07 00:34:06,688 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:06,688 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:34:06,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-07 00:34:06,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:06,889 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:34:06,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:06,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1413173590, now seen corresponding path program 10 times [2021-12-07 00:34:06,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:06,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233892213] [2021-12-07 00:34:06,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:06,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:06,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:34:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:06,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 00:34:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:07,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:07,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:07,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:07,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:07,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:07,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:07,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:07,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:07,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:07,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:07,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:07,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:07,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:07,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:07,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 0 proven. 859 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2021-12-07 00:34:07,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:07,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233892213] [2021-12-07 00:34:07,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233892213] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:34:07,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110592290] [2021-12-07 00:34:07,572 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 00:34:07,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:07,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:34:07,573 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:34:07,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-07 00:34:07,715 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 00:34:07,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:34:07,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 66 conjunts are in the unsatisfiable core [2021-12-07 00:34:07,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:34:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 0 proven. 859 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2021-12-07 00:34:08,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:34:18,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110592290] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:34:18,244 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:34:18,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 51 [2021-12-07 00:34:18,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375433730] [2021-12-07 00:34:18,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:34:18,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-07 00:34:18,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:18,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-07 00:34:18,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=2940, Unknown=0, NotChecked=0, Total=3192 [2021-12-07 00:34:18,246 INFO L87 Difference]: Start difference. First operand 507 states and 571 transitions. Second operand has 52 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 51 states have internal predecessors, (139), 5 states have call successors, (6), 2 states have call predecessors, (6), 16 states have return successors, (31), 31 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-07 00:34:19,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:34:19,811 INFO L93 Difference]: Finished difference Result 516 states and 581 transitions. [2021-12-07 00:34:19,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-07 00:34:19,812 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 51 states have internal predecessors, (139), 5 states have call successors, (6), 2 states have call predecessors, (6), 16 states have return successors, (31), 31 states have call predecessors, (31), 4 states have call successors, (31) Word has length 214 [2021-12-07 00:34:19,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:34:19,814 INFO L225 Difference]: With dead ends: 516 [2021-12-07 00:34:19,814 INFO L226 Difference]: Without dead ends: 513 [2021-12-07 00:34:19,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 225 SyntacticMatches, 13 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=634, Invalid=7022, Unknown=0, NotChecked=0, Total=7656 [2021-12-07 00:34:19,815 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 226 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:34:19,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 2540 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-07 00:34:19,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-12-07 00:34:19,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 512. [2021-12-07 00:34:19,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 412 states have (on average 1.1067961165048543) internal successors, (456), 412 states have internal predecessors, (456), 53 states have call successors, (53), 32 states have call predecessors, (53), 46 states have return successors, (67), 67 states have call predecessors, (67), 52 states have call successors, (67) [2021-12-07 00:34:19,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 576 transitions. [2021-12-07 00:34:19,829 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 576 transitions. Word has length 214 [2021-12-07 00:34:19,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:34:19,829 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 576 transitions. [2021-12-07 00:34:19,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.7254901960784315) internal successors, (139), 51 states have internal predecessors, (139), 5 states have call successors, (6), 2 states have call predecessors, (6), 16 states have return successors, (31), 31 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-07 00:34:19,830 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 576 transitions. [2021-12-07 00:34:19,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-07 00:34:19,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:19,831 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:34:19,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-07 00:34:20,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-12-07 00:34:20,032 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:34:20,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:20,033 INFO L85 PathProgramCache]: Analyzing trace with hash 665208226, now seen corresponding path program 11 times [2021-12-07 00:34:20,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:20,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817154157] [2021-12-07 00:34:20,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:20,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:20,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:34:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:20,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 00:34:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:20,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:20,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:20,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:20,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:20,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:20,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:20,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:20,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:20,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:20,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:20,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:20,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:20,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:20,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:20,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 957 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2021-12-07 00:34:20,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:20,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817154157] [2021-12-07 00:34:20,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817154157] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:34:20,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295283194] [2021-12-07 00:34:20,795 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 00:34:20,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:20,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:34:20,796 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:34:20,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-07 00:34:20,997 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-12-07 00:34:20,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:34:21,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-07 00:34:21,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:34:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 957 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2021-12-07 00:34:22,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:34:39,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295283194] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:34:39,698 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:34:39,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 54 [2021-12-07 00:34:39,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629616087] [2021-12-07 00:34:39,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:34:39,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-12-07 00:34:39,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:39,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-12-07 00:34:39,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=3271, Unknown=2, NotChecked=0, Total=3540 [2021-12-07 00:34:39,700 INFO L87 Difference]: Start difference. First operand 512 states and 576 transitions. Second operand has 55 states, 54 states have (on average 2.7037037037037037) internal successors, (146), 54 states have internal predecessors, (146), 5 states have call successors, (6), 2 states have call predecessors, (6), 17 states have return successors, (33), 33 states have call predecessors, (33), 4 states have call successors, (33) [2021-12-07 00:34:41,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:34:41,384 INFO L93 Difference]: Finished difference Result 521 states and 586 transitions. [2021-12-07 00:34:41,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-07 00:34:41,384 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.7037037037037037) internal successors, (146), 54 states have internal predecessors, (146), 5 states have call successors, (6), 2 states have call predecessors, (6), 17 states have return successors, (33), 33 states have call predecessors, (33), 4 states have call successors, (33) Word has length 226 [2021-12-07 00:34:41,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:34:41,386 INFO L225 Difference]: With dead ends: 521 [2021-12-07 00:34:41,386 INFO L226 Difference]: Without dead ends: 518 [2021-12-07 00:34:41,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 237 SyntacticMatches, 14 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=674, Invalid=7880, Unknown=2, NotChecked=0, Total=8556 [2021-12-07 00:34:41,387 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 238 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 2936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:34:41,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 2765 Invalid, 2936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2789 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-07 00:34:41,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-12-07 00:34:41,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 517. [2021-12-07 00:34:41,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 416 states have (on average 1.1057692307692308) internal successors, (460), 416 states have internal predecessors, (460), 53 states have call successors, (53), 32 states have call predecessors, (53), 47 states have return successors, (68), 68 states have call predecessors, (68), 52 states have call successors, (68) [2021-12-07 00:34:41,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 581 transitions. [2021-12-07 00:34:41,401 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 581 transitions. Word has length 226 [2021-12-07 00:34:41,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:34:41,402 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 581 transitions. [2021-12-07 00:34:41,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.7037037037037037) internal successors, (146), 54 states have internal predecessors, (146), 5 states have call successors, (6), 2 states have call predecessors, (6), 17 states have return successors, (33), 33 states have call predecessors, (33), 4 states have call successors, (33) [2021-12-07 00:34:41,402 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 581 transitions. [2021-12-07 00:34:41,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-07 00:34:41,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:41,404 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:34:41,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-07 00:34:41,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-12-07 00:34:41,604 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:34:41,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:41,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2113299030, now seen corresponding path program 12 times [2021-12-07 00:34:41,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:41,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017216264] [2021-12-07 00:34:41,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:41,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:41,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:34:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:41,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:34:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:41,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:41,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:41,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:41,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:41,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:41,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:41,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:42,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:42,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:42,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:42,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:42,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:42,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:42,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:42,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:42,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:42,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1684 backedges. 0 proven. 828 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2021-12-07 00:34:42,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:42,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017216264] [2021-12-07 00:34:42,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017216264] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:34:42,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120880568] [2021-12-07 00:34:42,407 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 00:34:42,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:42,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:34:42,408 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:34:42,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-07 00:34:42,688 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-12-07 00:34:42,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:34:42,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-07 00:34:42,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:34:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1684 backedges. 0 proven. 828 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2021-12-07 00:34:43,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:34:48,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120880568] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:34:48,415 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:34:48,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 57 [2021-12-07 00:34:48,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966310569] [2021-12-07 00:34:48,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:34:48,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-12-07 00:34:48,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:48,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-12-07 00:34:48,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3352, Unknown=0, NotChecked=0, Total=3540 [2021-12-07 00:34:48,417 INFO L87 Difference]: Start difference. First operand 517 states and 581 transitions. Second operand has 58 states, 57 states have (on average 2.6842105263157894) internal successors, (153), 57 states have internal predecessors, (153), 5 states have call successors, (5), 2 states have call predecessors, (5), 18 states have return successors, (35), 35 states have call predecessors, (35), 4 states have call successors, (35) [2021-12-07 00:34:50,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:34:50,309 INFO L93 Difference]: Finished difference Result 526 states and 591 transitions. [2021-12-07 00:34:50,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-07 00:34:50,310 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.6842105263157894) internal successors, (153), 57 states have internal predecessors, (153), 5 states have call successors, (5), 2 states have call predecessors, (5), 18 states have return successors, (35), 35 states have call predecessors, (35), 4 states have call successors, (35) Word has length 224 [2021-12-07 00:34:50,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:34:50,312 INFO L225 Difference]: With dead ends: 526 [2021-12-07 00:34:50,312 INFO L226 Difference]: Without dead ends: 523 [2021-12-07 00:34:50,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 228 SyntacticMatches, 15 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1577 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=551, Invalid=8379, Unknown=0, NotChecked=0, Total=8930 [2021-12-07 00:34:50,313 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 251 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 3182 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 3339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 3182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:34:50,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 2175 Invalid, 3339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 3182 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-07 00:34:50,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-12-07 00:34:50,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 522. [2021-12-07 00:34:50,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 420 states have (on average 1.1047619047619048) internal successors, (464), 420 states have internal predecessors, (464), 53 states have call successors, (53), 32 states have call predecessors, (53), 48 states have return successors, (69), 69 states have call predecessors, (69), 52 states have call successors, (69) [2021-12-07 00:34:50,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 586 transitions. [2021-12-07 00:34:50,327 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 586 transitions. Word has length 224 [2021-12-07 00:34:50,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:34:50,327 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 586 transitions. [2021-12-07 00:34:50,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.6842105263157894) internal successors, (153), 57 states have internal predecessors, (153), 5 states have call successors, (5), 2 states have call predecessors, (5), 18 states have return successors, (35), 35 states have call predecessors, (35), 4 states have call successors, (35) [2021-12-07 00:34:50,327 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 586 transitions. [2021-12-07 00:34:50,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-12-07 00:34:50,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:50,333 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:34:50,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-07 00:34:50,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:50,534 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:34:50,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:50,536 INFO L85 PathProgramCache]: Analyzing trace with hash -89034718, now seen corresponding path program 13 times [2021-12-07 00:34:50,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:50,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938036607] [2021-12-07 00:34:50,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:50,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:34:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 00:34:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2158 backedges. 0 proven. 1168 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-12-07 00:34:51,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:51,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938036607] [2021-12-07 00:34:51,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938036607] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:34:51,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277787919] [2021-12-07 00:34:51,529 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 00:34:51,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:51,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:34:51,529 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:34:51,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-07 00:34:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 78 conjunts are in the unsatisfiable core [2021-12-07 00:34:51,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:34:53,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2158 backedges. 0 proven. 1168 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-12-07 00:34:53,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:34:57,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277787919] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:34:57,950 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:34:57,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 60 [2021-12-07 00:34:57,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500258198] [2021-12-07 00:34:57,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:34:57,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-12-07 00:34:57,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:57,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-12-07 00:34:57,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3708, Unknown=0, NotChecked=0, Total=3906 [2021-12-07 00:34:57,951 INFO L87 Difference]: Start difference. First operand 522 states and 586 transitions. Second operand has 61 states, 60 states have (on average 2.6666666666666665) internal successors, (160), 60 states have internal predecessors, (160), 5 states have call successors, (6), 2 states have call predecessors, (6), 19 states have return successors, (37), 37 states have call predecessors, (37), 4 states have call successors, (37) [2021-12-07 00:35:00,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:00,155 INFO L93 Difference]: Finished difference Result 531 states and 596 transitions. [2021-12-07 00:35:00,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-07 00:35:00,160 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 2.6666666666666665) internal successors, (160), 60 states have internal predecessors, (160), 5 states have call successors, (6), 2 states have call predecessors, (6), 19 states have return successors, (37), 37 states have call predecessors, (37), 4 states have call successors, (37) Word has length 250 [2021-12-07 00:35:00,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:00,162 INFO L225 Difference]: With dead ends: 531 [2021-12-07 00:35:00,162 INFO L226 Difference]: Without dead ends: 528 [2021-12-07 00:35:00,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 258 SyntacticMatches, 16 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=582, Invalid=9318, Unknown=0, NotChecked=0, Total=9900 [2021-12-07 00:35:00,164 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 203 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 3481 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 3609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 3481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:00,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 2818 Invalid, 3609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 3481 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-07 00:35:00,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-12-07 00:35:00,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 527. [2021-12-07 00:35:00,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 424 states have (on average 1.1037735849056605) internal successors, (468), 424 states have internal predecessors, (468), 53 states have call successors, (53), 32 states have call predecessors, (53), 49 states have return successors, (70), 70 states have call predecessors, (70), 52 states have call successors, (70) [2021-12-07 00:35:00,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 591 transitions. [2021-12-07 00:35:00,177 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 591 transitions. Word has length 250 [2021-12-07 00:35:00,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:00,177 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 591 transitions. [2021-12-07 00:35:00,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 2.6666666666666665) internal successors, (160), 60 states have internal predecessors, (160), 5 states have call successors, (6), 2 states have call predecessors, (6), 19 states have return successors, (37), 37 states have call predecessors, (37), 4 states have call successors, (37) [2021-12-07 00:35:00,178 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 591 transitions. [2021-12-07 00:35:00,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-12-07 00:35:00,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:00,179 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:00,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-12-07 00:35:00,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:00,380 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:35:00,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:00,380 INFO L85 PathProgramCache]: Analyzing trace with hash 755475542, now seen corresponding path program 14 times [2021-12-07 00:35:00,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:00,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927248075] [2021-12-07 00:35:00,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:00,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:35:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 00:35:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2391 backedges. 0 proven. 1281 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2021-12-07 00:35:01,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:01,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927248075] [2021-12-07 00:35:01,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927248075] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:01,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690960556] [2021-12-07 00:35:01,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:35:01,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:01,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:01,350 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:01,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-07 00:35:01,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:35:01,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:35:01,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 82 conjunts are in the unsatisfiable core [2021-12-07 00:35:01,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2391 backedges. 0 proven. 1281 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2021-12-07 00:35:03,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:35:09,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690960556] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:09,197 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:35:09,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 63 [2021-12-07 00:35:09,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266132186] [2021-12-07 00:35:09,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:35:09,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-12-07 00:35:09,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:09,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-12-07 00:35:09,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=4082, Unknown=0, NotChecked=0, Total=4290 [2021-12-07 00:35:09,199 INFO L87 Difference]: Start difference. First operand 527 states and 591 transitions. Second operand has 64 states, 63 states have (on average 2.6507936507936507) internal successors, (167), 63 states have internal predecessors, (167), 5 states have call successors, (6), 2 states have call predecessors, (6), 20 states have return successors, (39), 39 states have call predecessors, (39), 4 states have call successors, (39) [2021-12-07 00:35:11,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:11,534 INFO L93 Difference]: Finished difference Result 536 states and 601 transitions. [2021-12-07 00:35:11,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-07 00:35:11,534 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.6507936507936507) internal successors, (167), 63 states have internal predecessors, (167), 5 states have call successors, (6), 2 states have call predecessors, (6), 20 states have return successors, (39), 39 states have call predecessors, (39), 4 states have call successors, (39) Word has length 262 [2021-12-07 00:35:11,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:11,536 INFO L225 Difference]: With dead ends: 536 [2021-12-07 00:35:11,536 INFO L226 Difference]: Without dead ends: 533 [2021-12-07 00:35:11,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 270 SyntacticMatches, 17 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=613, Invalid=10307, Unknown=0, NotChecked=0, Total=10920 [2021-12-07 00:35:11,538 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 215 mSDsluCounter, 2811 mSDsCounter, 0 mSdLazyCounter, 3803 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 3938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 3803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:11,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 2888 Invalid, 3938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 3803 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-07 00:35:11,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-12-07 00:35:11,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 532. [2021-12-07 00:35:11,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 428 states have (on average 1.102803738317757) internal successors, (472), 428 states have internal predecessors, (472), 53 states have call successors, (53), 32 states have call predecessors, (53), 50 states have return successors, (71), 71 states have call predecessors, (71), 52 states have call successors, (71) [2021-12-07 00:35:11,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 596 transitions. [2021-12-07 00:35:11,551 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 596 transitions. Word has length 262 [2021-12-07 00:35:11,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:11,551 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 596 transitions. [2021-12-07 00:35:11,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.6507936507936507) internal successors, (167), 63 states have internal predecessors, (167), 5 states have call successors, (6), 2 states have call predecessors, (6), 20 states have return successors, (39), 39 states have call predecessors, (39), 4 states have call successors, (39) [2021-12-07 00:35:11,552 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 596 transitions. [2021-12-07 00:35:11,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-12-07 00:35:11,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:11,554 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:11,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-07 00:35:11,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-12-07 00:35:11,754 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:35:11,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:11,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2082304546, now seen corresponding path program 15 times [2021-12-07 00:35:11,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:11,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002909223] [2021-12-07 00:35:11,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:11,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:35:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:35:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2341 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2021-12-07 00:35:12,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:12,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002909223] [2021-12-07 00:35:12,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002909223] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:12,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597522668] [2021-12-07 00:35:12,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:35:12,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:12,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:12,819 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:12,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-07 00:35:13,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-12-07 00:35:13,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:35:13,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 82 conjunts are in the unsatisfiable core [2021-12-07 00:35:13,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2341 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2021-12-07 00:35:14,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:35:21,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597522668] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:21,421 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:35:21,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 66 [2021-12-07 00:35:21,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382639021] [2021-12-07 00:35:21,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:35:21,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-12-07 00:35:21,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:21,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-12-07 00:35:21,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=4474, Unknown=0, NotChecked=0, Total=4692 [2021-12-07 00:35:21,423 INFO L87 Difference]: Start difference. First operand 532 states and 596 transitions. Second operand has 67 states, 66 states have (on average 2.6363636363636362) internal successors, (174), 66 states have internal predecessors, (174), 5 states have call successors, (5), 2 states have call predecessors, (5), 21 states have return successors, (41), 41 states have call predecessors, (41), 4 states have call successors, (41) [2021-12-07 00:35:23,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:23,926 INFO L93 Difference]: Finished difference Result 541 states and 606 transitions. [2021-12-07 00:35:23,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-12-07 00:35:23,926 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 2.6363636363636362) internal successors, (174), 66 states have internal predecessors, (174), 5 states have call successors, (5), 2 states have call predecessors, (5), 21 states have return successors, (41), 41 states have call predecessors, (41), 4 states have call successors, (41) Word has length 260 [2021-12-07 00:35:23,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:23,928 INFO L225 Difference]: With dead ends: 541 [2021-12-07 00:35:23,928 INFO L226 Difference]: Without dead ends: 538 [2021-12-07 00:35:23,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 264 SyntacticMatches, 18 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2156 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=644, Invalid=11346, Unknown=0, NotChecked=0, Total=11990 [2021-12-07 00:35:23,929 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 224 mSDsluCounter, 3681 mSDsCounter, 0 mSdLazyCounter, 3957 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 3759 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 3957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:23,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 3759 Invalid, 4100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 3957 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-07 00:35:23,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-12-07 00:35:23,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 537. [2021-12-07 00:35:23,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 432 states have (on average 1.1018518518518519) internal successors, (476), 432 states have internal predecessors, (476), 53 states have call successors, (53), 32 states have call predecessors, (53), 51 states have return successors, (72), 72 states have call predecessors, (72), 52 states have call successors, (72) [2021-12-07 00:35:23,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 601 transitions. [2021-12-07 00:35:23,949 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 601 transitions. Word has length 260 [2021-12-07 00:35:23,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:23,950 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 601 transitions. [2021-12-07 00:35:23,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 2.6363636363636362) internal successors, (174), 66 states have internal predecessors, (174), 5 states have call successors, (5), 2 states have call predecessors, (5), 21 states have return successors, (41), 41 states have call predecessors, (41), 4 states have call successors, (41) [2021-12-07 00:35:23,950 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 601 transitions. [2021-12-07 00:35:23,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-12-07 00:35:23,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:23,953 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 21, 21, 21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:23,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-07 00:35:24,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:24,154 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:35:24,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:24,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1640545750, now seen corresponding path program 16 times [2021-12-07 00:35:24,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:24,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164461552] [2021-12-07 00:35:24,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:24,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:35:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 00:35:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2893 backedges. 0 proven. 1522 refuted. 0 times theorem prover too weak. 1371 trivial. 0 not checked. [2021-12-07 00:35:25,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:25,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164461552] [2021-12-07 00:35:25,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164461552] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:25,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254443333] [2021-12-07 00:35:25,315 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 00:35:25,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:25,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:25,316 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:25,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-07 00:35:25,707 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 00:35:25,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:35:25,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 90 conjunts are in the unsatisfiable core [2021-12-07 00:35:25,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:27,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2893 backedges. 0 proven. 1522 refuted. 0 times theorem prover too weak. 1371 trivial. 0 not checked. [2021-12-07 00:35:27,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:35:34,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254443333] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:34,971 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:35:34,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 69 [2021-12-07 00:35:34,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143425093] [2021-12-07 00:35:34,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:35:34,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-12-07 00:35:34,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:34,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-12-07 00:35:34,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=4884, Unknown=0, NotChecked=0, Total=5112 [2021-12-07 00:35:34,973 INFO L87 Difference]: Start difference. First operand 537 states and 601 transitions. Second operand has 70 states, 69 states have (on average 2.6231884057971016) internal successors, (181), 69 states have internal predecessors, (181), 5 states have call successors, (6), 2 states have call predecessors, (6), 22 states have return successors, (43), 43 states have call predecessors, (43), 4 states have call successors, (43) [2021-12-07 00:35:37,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:37,927 INFO L93 Difference]: Finished difference Result 546 states and 611 transitions. [2021-12-07 00:35:37,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-07 00:35:37,928 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.6231884057971016) internal successors, (181), 69 states have internal predecessors, (181), 5 states have call successors, (6), 2 states have call predecessors, (6), 22 states have return successors, (43), 43 states have call predecessors, (43), 4 states have call successors, (43) Word has length 286 [2021-12-07 00:35:37,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:37,930 INFO L225 Difference]: With dead ends: 546 [2021-12-07 00:35:37,930 INFO L226 Difference]: Without dead ends: 543 [2021-12-07 00:35:37,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 294 SyntacticMatches, 19 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2369 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=675, Invalid=12435, Unknown=0, NotChecked=0, Total=13110 [2021-12-07 00:35:37,931 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 234 mSDsluCounter, 3838 mSDsCounter, 0 mSdLazyCounter, 4648 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 3917 SdHoareTripleChecker+Invalid, 4797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 4648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:37,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 3917 Invalid, 4797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 4648 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-07 00:35:37,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-12-07 00:35:37,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 542. [2021-12-07 00:35:37,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 436 states have (on average 1.1009174311926606) internal successors, (480), 436 states have internal predecessors, (480), 53 states have call successors, (53), 32 states have call predecessors, (53), 52 states have return successors, (73), 73 states have call predecessors, (73), 52 states have call successors, (73) [2021-12-07 00:35:37,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 606 transitions. [2021-12-07 00:35:37,944 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 606 transitions. Word has length 286 [2021-12-07 00:35:37,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:37,944 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 606 transitions. [2021-12-07 00:35:37,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 2.6231884057971016) internal successors, (181), 69 states have internal predecessors, (181), 5 states have call successors, (6), 2 states have call predecessors, (6), 22 states have return successors, (43), 43 states have call predecessors, (43), 4 states have call successors, (43) [2021-12-07 00:35:37,944 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 606 transitions. [2021-12-07 00:35:37,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-12-07 00:35:37,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:37,950 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:37,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-12-07 00:35:38,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-12-07 00:35:38,151 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:35:38,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:38,153 INFO L85 PathProgramCache]: Analyzing trace with hash -134093534, now seen corresponding path program 17 times [2021-12-07 00:35:38,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:38,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352491148] [2021-12-07 00:35:38,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:38,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:38,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:35:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:38,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 00:35:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:38,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:38,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:38,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:38,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:38,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:38,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:38,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:38,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:38,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:38,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:38,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:38,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:38,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:39,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:39,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:39,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:39,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:39,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:39,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:39,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:39,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:39,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3162 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2021-12-07 00:35:39,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:39,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352491148] [2021-12-07 00:35:39,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352491148] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:39,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965018441] [2021-12-07 00:35:39,418 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 00:35:39,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:39,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:39,419 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:39,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-07 00:35:39,883 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-12-07 00:35:39,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:35:39,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 94 conjunts are in the unsatisfiable core [2021-12-07 00:35:39,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3162 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2021-12-07 00:35:41,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:35:50,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965018441] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:50,402 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:35:50,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 72 [2021-12-07 00:35:50,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752600183] [2021-12-07 00:35:50,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:35:50,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-12-07 00:35:50,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:50,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-12-07 00:35:50,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=5312, Unknown=0, NotChecked=0, Total=5550 [2021-12-07 00:35:50,404 INFO L87 Difference]: Start difference. First operand 542 states and 606 transitions. Second operand has 73 states, 72 states have (on average 2.611111111111111) internal successors, (188), 72 states have internal predecessors, (188), 5 states have call successors, (6), 2 states have call predecessors, (6), 23 states have return successors, (45), 45 states have call predecessors, (45), 4 states have call successors, (45) [2021-12-07 00:35:53,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:53,612 INFO L93 Difference]: Finished difference Result 551 states and 616 transitions. [2021-12-07 00:35:53,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-12-07 00:35:53,612 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 2.611111111111111) internal successors, (188), 72 states have internal predecessors, (188), 5 states have call successors, (6), 2 states have call predecessors, (6), 23 states have return successors, (45), 45 states have call predecessors, (45), 4 states have call successors, (45) Word has length 298 [2021-12-07 00:35:53,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:53,614 INFO L225 Difference]: With dead ends: 551 [2021-12-07 00:35:53,614 INFO L226 Difference]: Without dead ends: 548 [2021-12-07 00:35:53,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 306 SyntacticMatches, 20 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2592 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=706, Invalid=13574, Unknown=0, NotChecked=0, Total=14280 [2021-12-07 00:35:53,615 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 316 mSDsluCounter, 2917 mSDsCounter, 0 mSdLazyCounter, 4914 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 5115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 4914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:53,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2997 Invalid, 5115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 4914 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-07 00:35:53,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-12-07 00:35:53,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 547. [2021-12-07 00:35:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 440 states have (on average 1.1) internal successors, (484), 440 states have internal predecessors, (484), 53 states have call successors, (53), 32 states have call predecessors, (53), 53 states have return successors, (74), 74 states have call predecessors, (74), 52 states have call successors, (74) [2021-12-07 00:35:53,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 611 transitions. [2021-12-07 00:35:53,628 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 611 transitions. Word has length 298 [2021-12-07 00:35:53,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:53,629 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 611 transitions. [2021-12-07 00:35:53,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 2.611111111111111) internal successors, (188), 72 states have internal predecessors, (188), 5 states have call successors, (6), 2 states have call predecessors, (6), 23 states have return successors, (45), 45 states have call predecessors, (45), 4 states have call successors, (45) [2021-12-07 00:35:53,629 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 611 transitions. [2021-12-07 00:35:53,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-12-07 00:35:53,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:53,631 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:53,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-12-07 00:35:53,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-12-07 00:35:53,832 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:35:53,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:53,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1392103722, now seen corresponding path program 18 times [2021-12-07 00:35:53,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:53,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743852417] [2021-12-07 00:35:53,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:53,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:53,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:35:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:53,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:35:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:53,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:54,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:54,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:54,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:54,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:54,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:54,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:54,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:54,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:54,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:54,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:54,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:54,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:54,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:54,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:54,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:54,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:54,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3106 backedges. 0 proven. 1467 refuted. 0 times theorem prover too weak. 1639 trivial. 0 not checked. [2021-12-07 00:35:55,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:55,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743852417] [2021-12-07 00:35:55,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743852417] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:55,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728659545] [2021-12-07 00:35:55,261 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 00:35:55,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:55,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:55,261 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:55,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-07 00:35:55,785 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2021-12-07 00:35:55,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:35:55,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 94 conjunts are in the unsatisfiable core [2021-12-07 00:35:55,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:57,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3106 backedges. 0 proven. 1467 refuted. 0 times theorem prover too weak. 1639 trivial. 0 not checked. [2021-12-07 00:35:57,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:36:07,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728659545] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:36:07,473 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:36:07,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 75 [2021-12-07 00:36:07,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633450822] [2021-12-07 00:36:07,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:36:07,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-12-07 00:36:07,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:07,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-12-07 00:36:07,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=5758, Unknown=0, NotChecked=0, Total=6006 [2021-12-07 00:36:07,475 INFO L87 Difference]: Start difference. First operand 547 states and 611 transitions. Second operand has 76 states, 75 states have (on average 2.6) internal successors, (195), 75 states have internal predecessors, (195), 5 states have call successors, (5), 2 states have call predecessors, (5), 24 states have return successors, (47), 47 states have call predecessors, (47), 4 states have call successors, (47) [2021-12-07 00:36:10,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:10,722 INFO L93 Difference]: Finished difference Result 556 states and 621 transitions. [2021-12-07 00:36:10,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-12-07 00:36:10,723 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 2.6) internal successors, (195), 75 states have internal predecessors, (195), 5 states have call successors, (5), 2 states have call predecessors, (5), 24 states have return successors, (47), 47 states have call predecessors, (47), 4 states have call successors, (47) Word has length 296 [2021-12-07 00:36:10,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:10,725 INFO L225 Difference]: With dead ends: 556 [2021-12-07 00:36:10,725 INFO L226 Difference]: Without dead ends: 553 [2021-12-07 00:36:10,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 300 SyntacticMatches, 21 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2825 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=737, Invalid=14763, Unknown=0, NotChecked=0, Total=15500 [2021-12-07 00:36:10,726 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 328 mSDsluCounter, 3636 mSDsCounter, 0 mSdLazyCounter, 5456 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 3717 SdHoareTripleChecker+Invalid, 5667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 5456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:10,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 3717 Invalid, 5667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 5456 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-07 00:36:10,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-12-07 00:36:10,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 552. [2021-12-07 00:36:10,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 444 states have (on average 1.0990990990990992) internal successors, (488), 444 states have internal predecessors, (488), 53 states have call successors, (53), 32 states have call predecessors, (53), 54 states have return successors, (75), 75 states have call predecessors, (75), 52 states have call successors, (75) [2021-12-07 00:36:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 616 transitions. [2021-12-07 00:36:10,739 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 616 transitions. Word has length 296 [2021-12-07 00:36:10,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:10,739 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 616 transitions. [2021-12-07 00:36:10,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 2.6) internal successors, (195), 75 states have internal predecessors, (195), 5 states have call successors, (5), 2 states have call predecessors, (5), 24 states have return successors, (47), 47 states have call predecessors, (47), 4 states have call successors, (47) [2021-12-07 00:36:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 616 transitions. [2021-12-07 00:36:10,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-12-07 00:36:10,741 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:10,741 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:36:10,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-12-07 00:36:10,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-12-07 00:36:10,942 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:36:10,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:10,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1692424414, now seen corresponding path program 19 times [2021-12-07 00:36:10,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:10,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22387000] [2021-12-07 00:36:10,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:10,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:36:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:36:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3385 backedges. 0 proven. 1591 refuted. 0 times theorem prover too weak. 1794 trivial. 0 not checked. [2021-12-07 00:36:12,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:12,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22387000] [2021-12-07 00:36:12,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22387000] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:36:12,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320225614] [2021-12-07 00:36:12,507 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 00:36:12,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:36:12,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:36:12,508 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:36:12,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-07 00:36:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:13,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 98 conjunts are in the unsatisfiable core [2021-12-07 00:36:13,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:36:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3385 backedges. 0 proven. 1591 refuted. 0 times theorem prover too weak. 1794 trivial. 0 not checked. [2021-12-07 00:36:14,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:36:26,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320225614] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:36:26,162 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:36:26,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 78 [2021-12-07 00:36:26,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224768666] [2021-12-07 00:36:26,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:36:26,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-12-07 00:36:26,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:26,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-12-07 00:36:26,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=6222, Unknown=0, NotChecked=0, Total=6480 [2021-12-07 00:36:26,164 INFO L87 Difference]: Start difference. First operand 552 states and 616 transitions. Second operand has 79 states, 78 states have (on average 2.58974358974359) internal successors, (202), 78 states have internal predecessors, (202), 5 states have call successors, (5), 2 states have call predecessors, (5), 25 states have return successors, (49), 49 states have call predecessors, (49), 4 states have call successors, (49) [2021-12-07 00:36:29,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:29,696 INFO L93 Difference]: Finished difference Result 561 states and 626 transitions. [2021-12-07 00:36:29,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-07 00:36:29,697 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 2.58974358974359) internal successors, (202), 78 states have internal predecessors, (202), 5 states have call successors, (5), 2 states have call predecessors, (5), 25 states have return successors, (49), 49 states have call predecessors, (49), 4 states have call successors, (49) Word has length 308 [2021-12-07 00:36:29,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:29,699 INFO L225 Difference]: With dead ends: 561 [2021-12-07 00:36:29,699 INFO L226 Difference]: Without dead ends: 558 [2021-12-07 00:36:29,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 312 SyntacticMatches, 22 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=768, Invalid=16002, Unknown=0, NotChecked=0, Total=16770 [2021-12-07 00:36:29,700 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 265 mSDsluCounter, 4481 mSDsCounter, 0 mSdLazyCounter, 6075 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 4563 SdHoareTripleChecker+Invalid, 6246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 6075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:29,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 4563 Invalid, 6246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 6075 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-07 00:36:29,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-12-07 00:36:29,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 557. [2021-12-07 00:36:29,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 448 states have (on average 1.0982142857142858) internal successors, (492), 448 states have internal predecessors, (492), 53 states have call successors, (53), 32 states have call predecessors, (53), 55 states have return successors, (76), 76 states have call predecessors, (76), 52 states have call successors, (76) [2021-12-07 00:36:29,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 621 transitions. [2021-12-07 00:36:29,713 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 621 transitions. Word has length 308 [2021-12-07 00:36:29,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:29,713 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 621 transitions. [2021-12-07 00:36:29,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 2.58974358974359) internal successors, (202), 78 states have internal predecessors, (202), 5 states have call successors, (5), 2 states have call predecessors, (5), 25 states have return successors, (49), 49 states have call predecessors, (49), 4 states have call successors, (49) [2021-12-07 00:36:29,713 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 621 transitions. [2021-12-07 00:36:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-12-07 00:36:29,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:29,715 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:36:29,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-12-07 00:36:29,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-12-07 00:36:29,917 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:36:29,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:29,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1259730858, now seen corresponding path program 20 times [2021-12-07 00:36:29,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:29,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089237398] [2021-12-07 00:36:29,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:29,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:30,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:36:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:30,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:36:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:30,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:30,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:30,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:30,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:30,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:30,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:30,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:30,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:30,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:30,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:30,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:30,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:30,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:30,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:31,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:31,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:31,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:31,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:31,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:31,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:31,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:31,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:31,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:31,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:31,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3676 backedges. 0 proven. 1720 refuted. 0 times theorem prover too weak. 1956 trivial. 0 not checked. [2021-12-07 00:36:31,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:31,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089237398] [2021-12-07 00:36:31,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089237398] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:36:31,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192529866] [2021-12-07 00:36:31,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:36:31,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:36:31,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:36:31,583 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:36:31,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-07 00:36:32,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:36:32,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:36:32,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 102 conjunts are in the unsatisfiable core [2021-12-07 00:36:32,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:36:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3676 backedges. 0 proven. 1720 refuted. 0 times theorem prover too weak. 1956 trivial. 0 not checked. [2021-12-07 00:36:34,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:36:47,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192529866] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:36:47,082 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:36:47,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 81 [2021-12-07 00:36:47,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545492927] [2021-12-07 00:36:47,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:36:47,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-12-07 00:36:47,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:47,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-12-07 00:36:47,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=6704, Unknown=0, NotChecked=0, Total=6972 [2021-12-07 00:36:47,084 INFO L87 Difference]: Start difference. First operand 557 states and 621 transitions. Second operand has 82 states, 81 states have (on average 2.580246913580247) internal successors, (209), 81 states have internal predecessors, (209), 5 states have call successors, (5), 2 states have call predecessors, (5), 26 states have return successors, (51), 51 states have call predecessors, (51), 4 states have call successors, (51) [2021-12-07 00:36:51,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:51,198 INFO L93 Difference]: Finished difference Result 566 states and 631 transitions. [2021-12-07 00:36:51,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-12-07 00:36:51,198 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 2.580246913580247) internal successors, (209), 81 states have internal predecessors, (209), 5 states have call successors, (5), 2 states have call predecessors, (5), 26 states have return successors, (51), 51 states have call predecessors, (51), 4 states have call successors, (51) Word has length 320 [2021-12-07 00:36:51,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:51,200 INFO L225 Difference]: With dead ends: 566 [2021-12-07 00:36:51,200 INFO L226 Difference]: Without dead ends: 563 [2021-12-07 00:36:51,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 324 SyntacticMatches, 23 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3321 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=799, Invalid=17291, Unknown=0, NotChecked=0, Total=18090 [2021-12-07 00:36:51,201 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 274 mSDsluCounter, 4690 mSDsCounter, 0 mSdLazyCounter, 6332 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 4773 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 6332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:51,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 4773 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 6332 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-07 00:36:51,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-12-07 00:36:51,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 562. [2021-12-07 00:36:51,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 452 states have (on average 1.0973451327433628) internal successors, (496), 452 states have internal predecessors, (496), 53 states have call successors, (53), 32 states have call predecessors, (53), 56 states have return successors, (77), 77 states have call predecessors, (77), 52 states have call successors, (77) [2021-12-07 00:36:51,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 626 transitions. [2021-12-07 00:36:51,214 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 626 transitions. Word has length 320 [2021-12-07 00:36:51,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:51,214 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 626 transitions. [2021-12-07 00:36:51,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 2.580246913580247) internal successors, (209), 81 states have internal predecessors, (209), 5 states have call successors, (5), 2 states have call predecessors, (5), 26 states have return successors, (51), 51 states have call predecessors, (51), 4 states have call successors, (51) [2021-12-07 00:36:51,215 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 626 transitions. [2021-12-07 00:36:51,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-12-07 00:36:51,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:51,217 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:36:51,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-12-07 00:36:51,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-12-07 00:36:51,418 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:36:51,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:51,419 INFO L85 PathProgramCache]: Analyzing trace with hash 918147490, now seen corresponding path program 21 times [2021-12-07 00:36:51,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:51,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500944194] [2021-12-07 00:36:51,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:51,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:51,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:36:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:51,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:36:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:51,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:51,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:51,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:51,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:51,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:51,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:51,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:52,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:52,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:52,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:52,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:52,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:52,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:52,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:52,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:52,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:52,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:52,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:52,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:52,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:52,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:53,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:53,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:53,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:53,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3979 backedges. 0 proven. 1854 refuted. 0 times theorem prover too weak. 2125 trivial. 0 not checked. [2021-12-07 00:36:53,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:53,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500944194] [2021-12-07 00:36:53,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500944194] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:36:53,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065589007] [2021-12-07 00:36:53,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:36:53,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:36:53,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:36:53,237 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:36:53,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-07 00:36:54,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2021-12-07 00:36:54,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:36:54,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 106 conjunts are in the unsatisfiable core [2021-12-07 00:36:54,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:36:56,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3979 backedges. 0 proven. 1854 refuted. 0 times theorem prover too weak. 2125 trivial. 0 not checked. [2021-12-07 00:36:56,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:37:10,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065589007] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:37:10,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:37:10,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 84 [2021-12-07 00:37:10,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388841799] [2021-12-07 00:37:10,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:37:10,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-12-07 00:37:10,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:37:10,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-12-07 00:37:10,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=7204, Unknown=0, NotChecked=0, Total=7482 [2021-12-07 00:37:10,352 INFO L87 Difference]: Start difference. First operand 562 states and 626 transitions. Second operand has 85 states, 84 states have (on average 2.5714285714285716) internal successors, (216), 84 states have internal predecessors, (216), 5 states have call successors, (5), 2 states have call predecessors, (5), 27 states have return successors, (53), 53 states have call predecessors, (53), 4 states have call successors, (53) [2021-12-07 00:37:14,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:37:14,644 INFO L93 Difference]: Finished difference Result 571 states and 636 transitions. [2021-12-07 00:37:14,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-12-07 00:37:14,645 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 84 states have (on average 2.5714285714285716) internal successors, (216), 84 states have internal predecessors, (216), 5 states have call successors, (5), 2 states have call predecessors, (5), 27 states have return successors, (53), 53 states have call predecessors, (53), 4 states have call successors, (53) Word has length 332 [2021-12-07 00:37:14,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:37:14,647 INFO L225 Difference]: With dead ends: 571 [2021-12-07 00:37:14,647 INFO L226 Difference]: Without dead ends: 568 [2021-12-07 00:37:14,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 336 SyntacticMatches, 24 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3584 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=830, Invalid=18630, Unknown=0, NotChecked=0, Total=19460 [2021-12-07 00:37:14,648 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 369 mSDsluCounter, 4655 mSDsCounter, 0 mSdLazyCounter, 7393 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 4739 SdHoareTripleChecker+Invalid, 7631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 7393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:37:14,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 4739 Invalid, 7631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 7393 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-07 00:37:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-12-07 00:37:14,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 567. [2021-12-07 00:37:14,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 456 states have (on average 1.0964912280701755) internal successors, (500), 456 states have internal predecessors, (500), 53 states have call successors, (53), 32 states have call predecessors, (53), 57 states have return successors, (78), 78 states have call predecessors, (78), 52 states have call successors, (78) [2021-12-07 00:37:14,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 631 transitions. [2021-12-07 00:37:14,667 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 631 transitions. Word has length 332 [2021-12-07 00:37:14,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:37:14,667 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 631 transitions. [2021-12-07 00:37:14,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 84 states have (on average 2.5714285714285716) internal successors, (216), 84 states have internal predecessors, (216), 5 states have call successors, (5), 2 states have call predecessors, (5), 27 states have return successors, (53), 53 states have call predecessors, (53), 4 states have call successors, (53) [2021-12-07 00:37:14,668 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 631 transitions. [2021-12-07 00:37:14,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-12-07 00:37:14,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:37:14,671 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:37:14,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-12-07 00:37:14,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:37:14,871 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:37:14,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:37:14,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1218085334, now seen corresponding path program 22 times [2021-12-07 00:37:14,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:37:14,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878576855] [2021-12-07 00:37:14,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:14,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:37:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:14,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:37:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:14,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:37:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:15,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:15,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:15,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:15,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:15,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:15,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:15,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:15,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:15,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:15,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:15,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:15,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:15,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:16,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:16,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:16,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:16,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:16,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:16,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:16,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:16,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:16,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:16,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:16,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:16,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:16,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:16,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 0 proven. 1993 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2021-12-07 00:37:16,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:37:16,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878576855] [2021-12-07 00:37:16,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878576855] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:37:16,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369430885] [2021-12-07 00:37:16,853 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 00:37:16,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:37:16,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:37:16,854 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:37:16,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-12-07 00:37:17,608 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 00:37:17,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:37:17,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 110 conjunts are in the unsatisfiable core [2021-12-07 00:37:17,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:37:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 0 proven. 1993 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2021-12-07 00:37:19,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:37:35,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369430885] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:37:35,555 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:37:35,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 87 [2021-12-07 00:37:35,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178504454] [2021-12-07 00:37:35,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:37:35,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-12-07 00:37:35,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:37:35,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-12-07 00:37:35,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=7722, Unknown=0, NotChecked=0, Total=8010 [2021-12-07 00:37:35,557 INFO L87 Difference]: Start difference. First operand 567 states and 631 transitions. Second operand has 88 states, 87 states have (on average 2.5632183908045976) internal successors, (223), 87 states have internal predecessors, (223), 5 states have call successors, (5), 2 states have call predecessors, (5), 28 states have return successors, (55), 55 states have call predecessors, (55), 4 states have call successors, (55) [2021-12-07 00:37:39,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:37:39,919 INFO L93 Difference]: Finished difference Result 576 states and 641 transitions. [2021-12-07 00:37:39,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-12-07 00:37:39,919 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 2.5632183908045976) internal successors, (223), 87 states have internal predecessors, (223), 5 states have call successors, (5), 2 states have call predecessors, (5), 28 states have return successors, (55), 55 states have call predecessors, (55), 4 states have call successors, (55) Word has length 344 [2021-12-07 00:37:39,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:37:39,921 INFO L225 Difference]: With dead ends: 576 [2021-12-07 00:37:39,921 INFO L226 Difference]: Without dead ends: 573 [2021-12-07 00:37:39,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 348 SyntacticMatches, 25 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3857 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=861, Invalid=20019, Unknown=0, NotChecked=0, Total=20880 [2021-12-07 00:37:39,923 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 295 mSDsluCounter, 5606 mSDsCounter, 0 mSdLazyCounter, 7500 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 5691 SdHoareTripleChecker+Invalid, 7692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 7500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:37:39,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 5691 Invalid, 7692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 7500 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-07 00:37:39,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-12-07 00:37:39,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 572. [2021-12-07 00:37:39,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 460 states have (on average 1.0956521739130434) internal successors, (504), 460 states have internal predecessors, (504), 53 states have call successors, (53), 32 states have call predecessors, (53), 58 states have return successors, (79), 79 states have call predecessors, (79), 52 states have call successors, (79) [2021-12-07 00:37:39,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 636 transitions. [2021-12-07 00:37:39,936 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 636 transitions. Word has length 344 [2021-12-07 00:37:39,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:37:39,937 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 636 transitions. [2021-12-07 00:37:39,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 2.5632183908045976) internal successors, (223), 87 states have internal predecessors, (223), 5 states have call successors, (5), 2 states have call predecessors, (5), 28 states have return successors, (55), 55 states have call predecessors, (55), 4 states have call successors, (55) [2021-12-07 00:37:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 636 transitions. [2021-12-07 00:37:39,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-12-07 00:37:39,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:37:39,942 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:37:39,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-12-07 00:37:40,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:37:40,144 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:37:40,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:37:40,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2104450082, now seen corresponding path program 23 times [2021-12-07 00:37:40,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:37:40,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333867167] [2021-12-07 00:37:40,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:40,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:37:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:40,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:37:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:40,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:37:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:40,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:40,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:40,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:40,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:40,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:40,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:40,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:40,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:40,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:41,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:41,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:41,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:41,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:41,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:41,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:41,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:41,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:41,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:41,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:41,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:41,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:41,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:41,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:42,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:42,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:42,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:42,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:42,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4621 backedges. 0 proven. 2137 refuted. 0 times theorem prover too weak. 2484 trivial. 0 not checked. [2021-12-07 00:37:42,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:37:42,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333867167] [2021-12-07 00:37:42,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333867167] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:37:42,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171913050] [2021-12-07 00:37:42,244 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 00:37:42,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:37:42,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:37:42,245 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:37:42,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-12-07 00:37:43,104 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2021-12-07 00:37:43,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:37:43,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 114 conjunts are in the unsatisfiable core [2021-12-07 00:37:43,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:37:45,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4621 backedges. 0 proven. 2137 refuted. 0 times theorem prover too weak. 2484 trivial. 0 not checked. [2021-12-07 00:37:45,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:38:02,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171913050] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:38:02,924 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:38:02,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 90 [2021-12-07 00:38:02,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939241512] [2021-12-07 00:38:02,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:38:02,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-12-07 00:38:02,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:38:02,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-12-07 00:38:02,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=8258, Unknown=0, NotChecked=0, Total=8556 [2021-12-07 00:38:02,926 INFO L87 Difference]: Start difference. First operand 572 states and 636 transitions. Second operand has 91 states, 90 states have (on average 2.5555555555555554) internal successors, (230), 90 states have internal predecessors, (230), 5 states have call successors, (5), 2 states have call predecessors, (5), 29 states have return successors, (57), 57 states have call predecessors, (57), 4 states have call successors, (57) [2021-12-07 00:38:07,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:07,949 INFO L93 Difference]: Finished difference Result 581 states and 646 transitions. [2021-12-07 00:38:07,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-12-07 00:38:07,949 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 2.5555555555555554) internal successors, (230), 90 states have internal predecessors, (230), 5 states have call successors, (5), 2 states have call predecessors, (5), 29 states have return successors, (57), 57 states have call predecessors, (57), 4 states have call successors, (57) Word has length 356 [2021-12-07 00:38:07,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:07,951 INFO L225 Difference]: With dead ends: 581 [2021-12-07 00:38:07,951 INFO L226 Difference]: Without dead ends: 578 [2021-12-07 00:38:07,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 360 SyntacticMatches, 26 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4140 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=892, Invalid=21458, Unknown=0, NotChecked=0, Total=22350 [2021-12-07 00:38:07,953 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 303 mSDsluCounter, 6094 mSDsCounter, 0 mSdLazyCounter, 8587 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 6180 SdHoareTripleChecker+Invalid, 8786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 8587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:07,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 6180 Invalid, 8786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 8587 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-07 00:38:07,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-12-07 00:38:07,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 577. [2021-12-07 00:38:07,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 464 states have (on average 1.0948275862068966) internal successors, (508), 464 states have internal predecessors, (508), 53 states have call successors, (53), 32 states have call predecessors, (53), 59 states have return successors, (80), 80 states have call predecessors, (80), 52 states have call successors, (80) [2021-12-07 00:38:07,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 641 transitions. [2021-12-07 00:38:07,965 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 641 transitions. Word has length 356 [2021-12-07 00:38:07,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:07,966 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 641 transitions. [2021-12-07 00:38:07,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 2.5555555555555554) internal successors, (230), 90 states have internal predecessors, (230), 5 states have call successors, (5), 2 states have call predecessors, (5), 29 states have return successors, (57), 57 states have call predecessors, (57), 4 states have call successors, (57) [2021-12-07 00:38:07,966 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 641 transitions. [2021-12-07 00:38:07,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2021-12-07 00:38:07,968 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:07,968 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 29, 29, 29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:07,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-12-07 00:38:08,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-12-07 00:38:08,169 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:38:08,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:08,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1771791318, now seen corresponding path program 24 times [2021-12-07 00:38:08,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:38:08,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755185658] [2021-12-07 00:38:08,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:08,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:38:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:08,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:38:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:08,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 00:38:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:08,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:08,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:08,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:08,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:08,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:08,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:08,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:09,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:09,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:09,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:09,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:09,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:09,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:09,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:09,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:09,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:09,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:09,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:09,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:09,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:10,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:10,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:10,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:10,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:10,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:10,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:10,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:10,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5381 backedges. 0 proven. 2686 refuted. 0 times theorem prover too weak. 2695 trivial. 0 not checked. [2021-12-07 00:38:10,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:38:10,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755185658] [2021-12-07 00:38:10,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755185658] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:38:10,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567023594] [2021-12-07 00:38:10,439 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 00:38:10,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:38:10,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:38:10,440 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:38:10,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-07 00:38:11,413 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2021-12-07 00:38:11,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:38:11,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 122 conjunts are in the unsatisfiable core [2021-12-07 00:38:11,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:13,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5381 backedges. 0 proven. 2686 refuted. 0 times theorem prover too weak. 2695 trivial. 0 not checked. [2021-12-07 00:38:13,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:38:33,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567023594] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:38:33,054 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:38:33,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 93 [2021-12-07 00:38:33,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496304510] [2021-12-07 00:38:33,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:38:33,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-12-07 00:38:33,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:38:33,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-12-07 00:38:33,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=8812, Unknown=0, NotChecked=0, Total=9120 [2021-12-07 00:38:33,055 INFO L87 Difference]: Start difference. First operand 577 states and 641 transitions. Second operand has 94 states, 93 states have (on average 2.5483870967741935) internal successors, (237), 93 states have internal predecessors, (237), 5 states have call successors, (6), 2 states have call predecessors, (6), 30 states have return successors, (59), 59 states have call predecessors, (59), 4 states have call successors, (59) [2021-12-07 00:38:38,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:38,055 INFO L93 Difference]: Finished difference Result 586 states and 651 transitions. [2021-12-07 00:38:38,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-12-07 00:38:38,056 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.5483870967741935) internal successors, (237), 93 states have internal predecessors, (237), 5 states have call successors, (6), 2 states have call predecessors, (6), 30 states have return successors, (59), 59 states have call predecessors, (59), 4 states have call successors, (59) Word has length 382 [2021-12-07 00:38:38,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:38,058 INFO L225 Difference]: With dead ends: 586 [2021-12-07 00:38:38,058 INFO L226 Difference]: Without dead ends: 583 [2021-12-07 00:38:38,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 390 SyntacticMatches, 27 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4433 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=923, Invalid=22947, Unknown=0, NotChecked=0, Total=23870 [2021-12-07 00:38:38,060 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 315 mSDsluCounter, 5561 mSDsCounter, 0 mSdLazyCounter, 8611 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 5648 SdHoareTripleChecker+Invalid, 8816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 8611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:38,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 5648 Invalid, 8816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 8611 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-07 00:38:38,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-12-07 00:38:38,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 582. [2021-12-07 00:38:38,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 468 states have (on average 1.0940170940170941) internal successors, (512), 468 states have internal predecessors, (512), 53 states have call successors, (53), 32 states have call predecessors, (53), 60 states have return successors, (81), 81 states have call predecessors, (81), 52 states have call successors, (81) [2021-12-07 00:38:38,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 646 transitions. [2021-12-07 00:38:38,073 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 646 transitions. Word has length 382 [2021-12-07 00:38:38,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:38,073 INFO L470 AbstractCegarLoop]: Abstraction has 582 states and 646 transitions. [2021-12-07 00:38:38,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.5483870967741935) internal successors, (237), 93 states have internal predecessors, (237), 5 states have call successors, (6), 2 states have call predecessors, (6), 30 states have return successors, (59), 59 states have call predecessors, (59), 4 states have call successors, (59) [2021-12-07 00:38:38,073 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 646 transitions. [2021-12-07 00:38:38,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-12-07 00:38:38,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:38,075 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:38,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-12-07 00:38:38,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-12-07 00:38:38,276 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:38:38,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:38,276 INFO L85 PathProgramCache]: Analyzing trace with hash 151537314, now seen corresponding path program 25 times [2021-12-07 00:38:38,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:38:38,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25887701] [2021-12-07 00:38:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:38,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:38:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:38,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:38:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:38,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:38:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:38,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:38,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:38,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:38,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:38,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:38,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:39,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:39,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:39,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:39,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:39,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:39,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:39,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:39,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:39,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:39,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:39,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:39,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:39,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:39,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:40,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:40,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:40,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:40,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:40,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:40,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:40,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:40,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:40,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5311 backedges. 0 proven. 2440 refuted. 0 times theorem prover too weak. 2871 trivial. 0 not checked. [2021-12-07 00:38:40,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:38:40,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25887701] [2021-12-07 00:38:40,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25887701] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:38:40,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595443491] [2021-12-07 00:38:40,652 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 00:38:40,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:38:40,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:38:40,652 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:38:40,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-12-07 00:38:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:41,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 122 conjunts are in the unsatisfiable core [2021-12-07 00:38:41,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:44,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5311 backedges. 0 proven. 2440 refuted. 0 times theorem prover too weak. 2871 trivial. 0 not checked. [2021-12-07 00:38:44,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:39:05,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595443491] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:39:05,498 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:39:05,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 96 [2021-12-07 00:39:05,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382067780] [2021-12-07 00:39:05,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:39:05,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-12-07 00:39:05,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:39:05,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-12-07 00:39:05,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=9384, Unknown=0, NotChecked=0, Total=9702 [2021-12-07 00:39:05,500 INFO L87 Difference]: Start difference. First operand 582 states and 646 transitions. Second operand has 97 states, 96 states have (on average 2.5416666666666665) internal successors, (244), 96 states have internal predecessors, (244), 5 states have call successors, (5), 2 states have call predecessors, (5), 31 states have return successors, (61), 61 states have call predecessors, (61), 4 states have call successors, (61) [2021-12-07 00:39:11,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:39:11,220 INFO L93 Difference]: Finished difference Result 591 states and 656 transitions. [2021-12-07 00:39:11,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-12-07 00:39:11,220 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 2.5416666666666665) internal successors, (244), 96 states have internal predecessors, (244), 5 states have call successors, (5), 2 states have call predecessors, (5), 31 states have return successors, (61), 61 states have call predecessors, (61), 4 states have call successors, (61) Word has length 380 [2021-12-07 00:39:11,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:39:11,222 INFO L225 Difference]: With dead ends: 591 [2021-12-07 00:39:11,222 INFO L226 Difference]: Without dead ends: 588 [2021-12-07 00:39:11,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 384 SyntacticMatches, 28 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4736 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=954, Invalid=24486, Unknown=0, NotChecked=0, Total=25440 [2021-12-07 00:39:11,224 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 324 mSDsluCounter, 6597 mSDsCounter, 0 mSdLazyCounter, 9650 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 6685 SdHoareTripleChecker+Invalid, 9863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 9650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:39:11,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 6685 Invalid, 9863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 9650 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-07 00:39:11,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-12-07 00:39:11,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 587. [2021-12-07 00:39:11,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 472 states have (on average 1.0932203389830508) internal successors, (516), 472 states have internal predecessors, (516), 53 states have call successors, (53), 32 states have call predecessors, (53), 61 states have return successors, (82), 82 states have call predecessors, (82), 52 states have call successors, (82) [2021-12-07 00:39:11,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 651 transitions. [2021-12-07 00:39:11,236 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 651 transitions. Word has length 380 [2021-12-07 00:39:11,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:39:11,237 INFO L470 AbstractCegarLoop]: Abstraction has 587 states and 651 transitions. [2021-12-07 00:39:11,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 2.5416666666666665) internal successors, (244), 96 states have internal predecessors, (244), 5 states have call successors, (5), 2 states have call predecessors, (5), 31 states have return successors, (61), 61 states have call predecessors, (61), 4 states have call successors, (61) [2021-12-07 00:39:11,237 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 651 transitions. [2021-12-07 00:39:11,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-12-07 00:39:11,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:39:11,239 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:39:11,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-12-07 00:39:11,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-12-07 00:39:11,441 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:39:11,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:39:11,442 INFO L85 PathProgramCache]: Analyzing trace with hash -499034922, now seen corresponding path program 26 times [2021-12-07 00:39:11,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:39:11,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184839639] [2021-12-07 00:39:11,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:39:11,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:39:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:11,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:39:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:11,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:39:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:11,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:11,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:11,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:11,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:12,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:12,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:12,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:12,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:12,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:12,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:12,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:12,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:12,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:12,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:12,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5674 backedges. 0 proven. 2599 refuted. 0 times theorem prover too weak. 3075 trivial. 0 not checked. [2021-12-07 00:39:14,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:39:14,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184839639] [2021-12-07 00:39:14,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184839639] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:39:14,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267343821] [2021-12-07 00:39:14,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:39:14,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:39:14,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:39:14,022 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:39:14,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-12-07 00:39:15,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:39:15,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:39:15,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 126 conjunts are in the unsatisfiable core [2021-12-07 00:39:15,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:39:18,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5674 backedges. 0 proven. 2599 refuted. 0 times theorem prover too weak. 3075 trivial. 0 not checked. [2021-12-07 00:39:18,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:39:40,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267343821] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:39:40,893 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:39:40,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 99 [2021-12-07 00:39:40,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123923025] [2021-12-07 00:39:40,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:39:40,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-12-07 00:39:40,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:39:40,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-12-07 00:39:40,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=9974, Unknown=0, NotChecked=0, Total=10302 [2021-12-07 00:39:40,895 INFO L87 Difference]: Start difference. First operand 587 states and 651 transitions. Second operand has 100 states, 99 states have (on average 2.5353535353535355) internal successors, (251), 99 states have internal predecessors, (251), 5 states have call successors, (5), 2 states have call predecessors, (5), 32 states have return successors, (63), 63 states have call predecessors, (63), 4 states have call successors, (63) [2021-12-07 00:39:47,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:39:47,071 INFO L93 Difference]: Finished difference Result 596 states and 661 transitions. [2021-12-07 00:39:47,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-12-07 00:39:47,071 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 2.5353535353535355) internal successors, (251), 99 states have internal predecessors, (251), 5 states have call successors, (5), 2 states have call predecessors, (5), 32 states have return successors, (63), 63 states have call predecessors, (63), 4 states have call successors, (63) Word has length 392 [2021-12-07 00:39:47,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:39:47,073 INFO L225 Difference]: With dead ends: 596 [2021-12-07 00:39:47,073 INFO L226 Difference]: Without dead ends: 593 [2021-12-07 00:39:47,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 396 SyntacticMatches, 29 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=985, Invalid=26075, Unknown=0, NotChecked=0, Total=27060 [2021-12-07 00:39:47,075 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 434 mSDsluCounter, 5573 mSDsCounter, 0 mSdLazyCounter, 9925 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 5662 SdHoareTripleChecker+Invalid, 10208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 9925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:39:47,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 5662 Invalid, 10208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 9925 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-07 00:39:47,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-12-07 00:39:47,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 592. [2021-12-07 00:39:47,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 476 states have (on average 1.0924369747899159) internal successors, (520), 476 states have internal predecessors, (520), 53 states have call successors, (53), 32 states have call predecessors, (53), 62 states have return successors, (83), 83 states have call predecessors, (83), 52 states have call successors, (83) [2021-12-07 00:39:47,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 656 transitions. [2021-12-07 00:39:47,088 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 656 transitions. Word has length 392 [2021-12-07 00:39:47,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:39:47,088 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 656 transitions. [2021-12-07 00:39:47,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 2.5353535353535355) internal successors, (251), 99 states have internal predecessors, (251), 5 states have call successors, (5), 2 states have call predecessors, (5), 32 states have return successors, (63), 63 states have call predecessors, (63), 4 states have call successors, (63) [2021-12-07 00:39:47,088 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 656 transitions. [2021-12-07 00:39:47,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2021-12-07 00:39:47,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:39:47,091 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 32, 32, 32, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:39:47,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-12-07 00:39:47,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-12-07 00:39:47,291 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:39:47,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:39:47,291 INFO L85 PathProgramCache]: Analyzing trace with hash 624826786, now seen corresponding path program 27 times [2021-12-07 00:39:47,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:39:47,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741359229] [2021-12-07 00:39:47,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:39:47,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:39:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:39:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 00:39:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:47,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:48,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:48,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:48,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:48,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:48,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:48,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:48,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:48,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:48,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:48,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:48,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:48,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:49,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:49,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:49,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:49,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:49,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:49,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:49,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:49,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:49,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:49,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:49,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:49,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6512 backedges. 0 proven. 3205 refuted. 0 times theorem prover too weak. 3307 trivial. 0 not checked. [2021-12-07 00:39:50,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:39:50,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741359229] [2021-12-07 00:39:50,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741359229] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:39:50,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95316446] [2021-12-07 00:39:50,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:39:50,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:39:50,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:39:50,044 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:39:50,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-12-07 00:39:51,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2021-12-07 00:39:51,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:39:51,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 134 conjunts are in the unsatisfiable core [2021-12-07 00:39:51,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:39:54,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6512 backedges. 0 proven. 3205 refuted. 0 times theorem prover too weak. 3307 trivial. 0 not checked. [2021-12-07 00:39:54,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:40:19,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95316446] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:40:19,673 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:40:19,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 102 [2021-12-07 00:40:19,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105162751] [2021-12-07 00:40:19,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:40:19,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-12-07 00:40:19,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:40:19,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-12-07 00:40:19,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=10582, Unknown=0, NotChecked=0, Total=10920 [2021-12-07 00:40:19,675 INFO L87 Difference]: Start difference. First operand 592 states and 656 transitions. Second operand has 103 states, 102 states have (on average 2.5294117647058822) internal successors, (258), 102 states have internal predecessors, (258), 5 states have call successors, (6), 2 states have call predecessors, (6), 33 states have return successors, (65), 65 states have call predecessors, (65), 4 states have call successors, (65) [2021-12-07 00:40:25,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:40:25,986 INFO L93 Difference]: Finished difference Result 601 states and 666 transitions. [2021-12-07 00:40:25,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-12-07 00:40:25,986 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 102 states have (on average 2.5294117647058822) internal successors, (258), 102 states have internal predecessors, (258), 5 states have call successors, (6), 2 states have call predecessors, (6), 33 states have return successors, (65), 65 states have call predecessors, (65), 4 states have call successors, (65) Word has length 418 [2021-12-07 00:40:25,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:40:25,988 INFO L225 Difference]: With dead ends: 601 [2021-12-07 00:40:25,988 INFO L226 Difference]: Without dead ends: 598 [2021-12-07 00:40:25,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 426 SyntacticMatches, 30 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5372 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1016, Invalid=27714, Unknown=0, NotChecked=0, Total=28730 [2021-12-07 00:40:25,990 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 445 mSDsluCounter, 5162 mSDsCounter, 0 mSdLazyCounter, 10005 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 5252 SdHoareTripleChecker+Invalid, 10296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 10005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:40:25,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 5252 Invalid, 10296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 10005 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-07 00:40:25,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-12-07 00:40:26,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 597. [2021-12-07 00:40:26,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 480 states have (on average 1.0916666666666666) internal successors, (524), 480 states have internal predecessors, (524), 53 states have call successors, (53), 32 states have call predecessors, (53), 63 states have return successors, (84), 84 states have call predecessors, (84), 52 states have call successors, (84) [2021-12-07 00:40:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 661 transitions. [2021-12-07 00:40:26,003 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 661 transitions. Word has length 418 [2021-12-07 00:40:26,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:40:26,004 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 661 transitions. [2021-12-07 00:40:26,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 102 states have (on average 2.5294117647058822) internal successors, (258), 102 states have internal predecessors, (258), 5 states have call successors, (6), 2 states have call predecessors, (6), 33 states have return successors, (65), 65 states have call predecessors, (65), 4 states have call successors, (65) [2021-12-07 00:40:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 661 transitions. [2021-12-07 00:40:26,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2021-12-07 00:40:26,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:40:26,006 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:40:26,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-12-07 00:40:26,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-12-07 00:40:26,207 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:40:26,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:40:26,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1331188138, now seen corresponding path program 28 times [2021-12-07 00:40:26,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:40:26,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018971835] [2021-12-07 00:40:26,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:40:26,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:40:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:26,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:40:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:26,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:40:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:26,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:26,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:26,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:26,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:26,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:27,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:27,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:27,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:27,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:27,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:27,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:27,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:27,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:27,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:27,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:27,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:27,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:28,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:28,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:28,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:28,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:28,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:28,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:28,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:28,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:28,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:28,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:28,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:29,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:29,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:29,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6436 backedges. 0 proven. 2932 refuted. 0 times theorem prover too weak. 3504 trivial. 0 not checked. [2021-12-07 00:40:29,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:40:29,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018971835] [2021-12-07 00:40:29,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018971835] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:40:29,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572475347] [2021-12-07 00:40:29,205 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 00:40:29,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:40:29,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:40:29,206 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:40:29,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-12-07 00:40:30,582 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 00:40:30,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:40:30,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 134 conjunts are in the unsatisfiable core [2021-12-07 00:40:30,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:40:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6436 backedges. 0 proven. 2932 refuted. 0 times theorem prover too weak. 3504 trivial. 0 not checked. [2021-12-07 00:40:33,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:41:01,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572475347] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:41:01,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:41:01,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 105 [2021-12-07 00:41:01,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166001608] [2021-12-07 00:41:01,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:41:01,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-12-07 00:41:01,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:01,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-12-07 00:41:01,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=11208, Unknown=0, NotChecked=0, Total=11556 [2021-12-07 00:41:01,353 INFO L87 Difference]: Start difference. First operand 597 states and 661 transitions. Second operand has 106 states, 105 states have (on average 2.5238095238095237) internal successors, (265), 105 states have internal predecessors, (265), 5 states have call successors, (5), 2 states have call predecessors, (5), 34 states have return successors, (67), 67 states have call predecessors, (67), 4 states have call successors, (67) [2021-12-07 00:41:08,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:08,100 INFO L93 Difference]: Finished difference Result 606 states and 671 transitions. [2021-12-07 00:41:08,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-12-07 00:41:08,100 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 2.5238095238095237) internal successors, (265), 105 states have internal predecessors, (265), 5 states have call successors, (5), 2 states have call predecessors, (5), 34 states have return successors, (67), 67 states have call predecessors, (67), 4 states have call successors, (67) Word has length 416 [2021-12-07 00:41:08,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:08,102 INFO L225 Difference]: With dead ends: 606 [2021-12-07 00:41:08,102 INFO L226 Difference]: Without dead ends: 603 [2021-12-07 00:41:08,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 420 SyntacticMatches, 31 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5705 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1047, Invalid=29403, Unknown=0, NotChecked=0, Total=30450 [2021-12-07 00:41:08,104 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 353 mSDsluCounter, 7388 mSDsCounter, 0 mSdLazyCounter, 11568 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 7479 SdHoareTripleChecker+Invalid, 11802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 11568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:08,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 7479 Invalid, 11802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 11568 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-07 00:41:08,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-12-07 00:41:08,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 602. [2021-12-07 00:41:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 484 states have (on average 1.0909090909090908) internal successors, (528), 484 states have internal predecessors, (528), 53 states have call successors, (53), 32 states have call predecessors, (53), 64 states have return successors, (85), 85 states have call predecessors, (85), 52 states have call successors, (85) [2021-12-07 00:41:08,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 666 transitions. [2021-12-07 00:41:08,118 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 666 transitions. Word has length 416 [2021-12-07 00:41:08,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:08,119 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 666 transitions. [2021-12-07 00:41:08,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 2.5238095238095237) internal successors, (265), 105 states have internal predecessors, (265), 5 states have call successors, (5), 2 states have call predecessors, (5), 34 states have return successors, (67), 67 states have call predecessors, (67), 4 states have call successors, (67) [2021-12-07 00:41:08,119 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 666 transitions. [2021-12-07 00:41:08,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-12-07 00:41:08,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:08,121 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 34, 34, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:08,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-12-07 00:41:08,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-12-07 00:41:08,322 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:41:08,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:08,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1409563554, now seen corresponding path program 29 times [2021-12-07 00:41:08,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:08,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10945196] [2021-12-07 00:41:08,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:08,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:08,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:41:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:08,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:41:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:08,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:08,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:08,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:08,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:09,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:09,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:09,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:09,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:09,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:09,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:09,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:09,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:09,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:09,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:09,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:10,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:10,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:10,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:10,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:10,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:10,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:10,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:10,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:10,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:10,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:10,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:10,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:10,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:11,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:11,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:11,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:11,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:11,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:11,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6835 backedges. 0 proven. 3106 refuted. 0 times theorem prover too weak. 3729 trivial. 0 not checked. [2021-12-07 00:41:11,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:11,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10945196] [2021-12-07 00:41:11,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10945196] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:41:11,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593611362] [2021-12-07 00:41:11,415 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 00:41:11,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:41:11,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:41:11,416 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:41:11,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-12-07 00:41:12,975 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2021-12-07 00:41:12,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:41:12,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 138 conjunts are in the unsatisfiable core [2021-12-07 00:41:12,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:16,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6835 backedges. 0 proven. 3106 refuted. 0 times theorem prover too weak. 3729 trivial. 0 not checked. [2021-12-07 00:41:16,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:41:47,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593611362] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:41:47,004 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:41:47,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 108 [2021-12-07 00:41:47,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251156102] [2021-12-07 00:41:47,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:41:47,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2021-12-07 00:41:47,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:47,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-12-07 00:41:47,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=11852, Unknown=0, NotChecked=0, Total=12210 [2021-12-07 00:41:47,006 INFO L87 Difference]: Start difference. First operand 602 states and 666 transitions. Second operand has 109 states, 108 states have (on average 2.5185185185185186) internal successors, (272), 108 states have internal predecessors, (272), 5 states have call successors, (5), 2 states have call predecessors, (5), 35 states have return successors, (69), 69 states have call predecessors, (69), 4 states have call successors, (69) [2021-12-07 00:41:54,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:54,157 INFO L93 Difference]: Finished difference Result 611 states and 676 transitions. [2021-12-07 00:41:54,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-12-07 00:41:54,157 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 108 states have (on average 2.5185185185185186) internal successors, (272), 108 states have internal predecessors, (272), 5 states have call successors, (5), 2 states have call predecessors, (5), 35 states have return successors, (69), 69 states have call predecessors, (69), 4 states have call successors, (69) Word has length 428 [2021-12-07 00:41:54,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:54,159 INFO L225 Difference]: With dead ends: 611 [2021-12-07 00:41:54,160 INFO L226 Difference]: Without dead ends: 608 [2021-12-07 00:41:54,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 432 SyntacticMatches, 32 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6048 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1078, Invalid=31142, Unknown=0, NotChecked=0, Total=32220 [2021-12-07 00:41:54,161 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 364 mSDsluCounter, 7191 mSDsCounter, 0 mSdLazyCounter, 12306 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 7283 SdHoareTripleChecker+Invalid, 12547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 12306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:54,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 7283 Invalid, 12547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 12306 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-07 00:41:54,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-12-07 00:41:54,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 607. [2021-12-07 00:41:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 488 states have (on average 1.0901639344262295) internal successors, (532), 488 states have internal predecessors, (532), 53 states have call successors, (53), 32 states have call predecessors, (53), 65 states have return successors, (86), 86 states have call predecessors, (86), 52 states have call successors, (86) [2021-12-07 00:41:54,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 671 transitions. [2021-12-07 00:41:54,174 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 671 transitions. Word has length 428 [2021-12-07 00:41:54,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:54,175 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 671 transitions. [2021-12-07 00:41:54,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 108 states have (on average 2.5185185185185186) internal successors, (272), 108 states have internal predecessors, (272), 5 states have call successors, (5), 2 states have call predecessors, (5), 35 states have return successors, (69), 69 states have call predecessors, (69), 4 states have call successors, (69) [2021-12-07 00:41:54,175 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 671 transitions. [2021-12-07 00:41:54,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2021-12-07 00:41:54,177 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:54,177 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 35, 35, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:54,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-12-07 00:41:54,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-12-07 00:41:54,378 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:41:54,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:54,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1682266154, now seen corresponding path program 30 times [2021-12-07 00:41:54,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:54,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708154217] [2021-12-07 00:41:54,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:54,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:54,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:41:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:54,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:41:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:54,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:54,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:54,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:55,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:55,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:55,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:55,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:55,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:55,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:55,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:55,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:55,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:56,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:56,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:56,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:56,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:56,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:56,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:56,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:56,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:56,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:56,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:56,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:57,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:57,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:57,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:57,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:57,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:57,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:57,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:57,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:57,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:57,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7246 backedges. 0 proven. 3285 refuted. 0 times theorem prover too weak. 3961 trivial. 0 not checked. [2021-12-07 00:41:57,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:57,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708154217] [2021-12-07 00:41:57,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708154217] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:41:57,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049839786] [2021-12-07 00:41:57,715 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 00:41:57,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:41:57,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:41:57,716 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:41:57,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-12-07 00:41:59,481 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 36 check-sat command(s) [2021-12-07 00:41:59,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:41:59,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 142 conjunts are in the unsatisfiable core [2021-12-07 00:41:59,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:42:03,139 INFO L134 CoverageAnalysis]: Checked inductivity of 7246 backedges. 0 proven. 3285 refuted. 0 times theorem prover too weak. 3961 trivial. 0 not checked. [2021-12-07 00:42:03,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:42:35,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049839786] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:42:35,792 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:42:35,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 111 [2021-12-07 00:42:35,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500408333] [2021-12-07 00:42:35,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:42:35,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-12-07 00:42:35,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:42:35,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-12-07 00:42:35,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=12514, Unknown=0, NotChecked=0, Total=12882 [2021-12-07 00:42:35,794 INFO L87 Difference]: Start difference. First operand 607 states and 671 transitions. Second operand has 112 states, 111 states have (on average 2.5135135135135136) internal successors, (279), 111 states have internal predecessors, (279), 5 states have call successors, (5), 2 states have call predecessors, (5), 36 states have return successors, (71), 71 states have call predecessors, (71), 4 states have call successors, (71) [2021-12-07 00:42:43,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:42:43,339 INFO L93 Difference]: Finished difference Result 616 states and 681 transitions. [2021-12-07 00:42:43,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-12-07 00:42:43,339 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 2.5135135135135136) internal successors, (279), 111 states have internal predecessors, (279), 5 states have call successors, (5), 2 states have call predecessors, (5), 36 states have return successors, (71), 71 states have call predecessors, (71), 4 states have call successors, (71) Word has length 440 [2021-12-07 00:42:43,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:42:43,341 INFO L225 Difference]: With dead ends: 616 [2021-12-07 00:42:43,341 INFO L226 Difference]: Without dead ends: 613 [2021-12-07 00:42:43,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 444 SyntacticMatches, 33 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6401 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1109, Invalid=32931, Unknown=0, NotChecked=0, Total=34040 [2021-12-07 00:42:43,343 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 373 mSDsluCounter, 8393 mSDsCounter, 0 mSdLazyCounter, 13259 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 8486 SdHoareTripleChecker+Invalid, 13507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 13259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:42:43,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 8486 Invalid, 13507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 13259 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-07 00:42:43,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-12-07 00:42:43,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 612. [2021-12-07 00:42:43,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 492 states have (on average 1.089430894308943) internal successors, (536), 492 states have internal predecessors, (536), 53 states have call successors, (53), 32 states have call predecessors, (53), 66 states have return successors, (87), 87 states have call predecessors, (87), 52 states have call successors, (87) [2021-12-07 00:42:43,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 676 transitions. [2021-12-07 00:42:43,363 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 676 transitions. Word has length 440 [2021-12-07 00:42:43,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:42:43,364 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 676 transitions. [2021-12-07 00:42:43,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 2.5135135135135136) internal successors, (279), 111 states have internal predecessors, (279), 5 states have call successors, (5), 2 states have call predecessors, (5), 36 states have return successors, (71), 71 states have call predecessors, (71), 4 states have call successors, (71) [2021-12-07 00:42:43,364 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 676 transitions. [2021-12-07 00:42:43,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2021-12-07 00:42:43,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:42:43,368 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 36, 36, 36, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:42:43,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-12-07 00:42:43,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:42:43,570 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:42:43,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:42:43,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1770376866, now seen corresponding path program 31 times [2021-12-07 00:42:43,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:42:43,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270107133] [2021-12-07 00:42:43,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:42:43,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:42:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:43,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:42:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:43,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 00:42:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:43,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:44,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:44,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:44,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:44,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:44,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:44,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:44,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:44,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:44,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:45,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:46,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:46,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:46,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:46,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:46,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:46,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:46,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:46,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:46,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:46,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:46,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:46,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:46,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:47,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:47,091 INFO L134 CoverageAnalysis]: Checked inductivity of 8188 backedges. 0 proven. 3967 refuted. 0 times theorem prover too weak. 4221 trivial. 0 not checked. [2021-12-07 00:42:47,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:42:47,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270107133] [2021-12-07 00:42:47,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270107133] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:42:47,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912920714] [2021-12-07 00:42:47,091 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 00:42:47,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:42:47,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:42:47,092 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:42:47,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-12-07 00:42:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:48,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 150 conjunts are in the unsatisfiable core [2021-12-07 00:42:48,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:42:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8188 backedges. 0 proven. 3967 refuted. 0 times theorem prover too weak. 4221 trivial. 0 not checked. [2021-12-07 00:42:52,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:43:28,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912920714] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:43:28,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:43:28,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 114 [2021-12-07 00:43:28,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408269642] [2021-12-07 00:43:28,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:43:28,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2021-12-07 00:43:28,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:43:28,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-12-07 00:43:28,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=13194, Unknown=0, NotChecked=0, Total=13572 [2021-12-07 00:43:28,933 INFO L87 Difference]: Start difference. First operand 612 states and 676 transitions. Second operand has 115 states, 114 states have (on average 2.508771929824561) internal successors, (286), 114 states have internal predecessors, (286), 5 states have call successors, (6), 2 states have call predecessors, (6), 37 states have return successors, (73), 73 states have call predecessors, (73), 4 states have call successors, (73) [2021-12-07 00:43:36,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:43:36,972 INFO L93 Difference]: Finished difference Result 621 states and 686 transitions. [2021-12-07 00:43:36,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-12-07 00:43:36,972 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 114 states have (on average 2.508771929824561) internal successors, (286), 114 states have internal predecessors, (286), 5 states have call successors, (6), 2 states have call predecessors, (6), 37 states have return successors, (73), 73 states have call predecessors, (73), 4 states have call successors, (73) Word has length 466 [2021-12-07 00:43:36,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:43:36,974 INFO L225 Difference]: With dead ends: 621 [2021-12-07 00:43:36,974 INFO L226 Difference]: Without dead ends: 618 [2021-12-07 00:43:36,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 474 SyntacticMatches, 34 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6764 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1140, Invalid=34770, Unknown=0, NotChecked=0, Total=35910 [2021-12-07 00:43:36,976 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 498 mSDsluCounter, 5849 mSDsCounter, 0 mSdLazyCounter, 13248 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 5943 SdHoareTripleChecker+Invalid, 13575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 13248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:43:36,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 5943 Invalid, 13575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 13248 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-07 00:43:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-12-07 00:43:36,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 617. [2021-12-07 00:43:36,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 496 states have (on average 1.0887096774193548) internal successors, (540), 496 states have internal predecessors, (540), 53 states have call successors, (53), 32 states have call predecessors, (53), 67 states have return successors, (88), 88 states have call predecessors, (88), 52 states have call successors, (88) [2021-12-07 00:43:36,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 681 transitions. [2021-12-07 00:43:36,990 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 681 transitions. Word has length 466 [2021-12-07 00:43:36,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:43:36,990 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 681 transitions. [2021-12-07 00:43:36,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 114 states have (on average 2.508771929824561) internal successors, (286), 114 states have internal predecessors, (286), 5 states have call successors, (6), 2 states have call predecessors, (6), 37 states have return successors, (73), 73 states have call predecessors, (73), 4 states have call successors, (73) [2021-12-07 00:43:36,990 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 681 transitions. [2021-12-07 00:43:36,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-12-07 00:43:36,993 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:43:36,993 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 37, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:43:37,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-12-07 00:43:37,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:43:37,193 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:43:37,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:43:37,194 INFO L85 PathProgramCache]: Analyzing trace with hash 682770774, now seen corresponding path program 32 times [2021-12-07 00:43:37,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:43:37,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91263768] [2021-12-07 00:43:37,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:43:37,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:43:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:37,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:43:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:37,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:43:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:37,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:37,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:37,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:37,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:38,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:38,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:38,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:38,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:38,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:38,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:38,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:38,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:38,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:38,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:39,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:39,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:39,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:39,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:39,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:39,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:39,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:39,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:39,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:39,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:39,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:40,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:40,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:40,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:40,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:40,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:40,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:40,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:40,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:40,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:40,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 8104 backedges. 0 proven. 3658 refuted. 0 times theorem prover too weak. 4446 trivial. 0 not checked. [2021-12-07 00:43:40,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:43:40,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91263768] [2021-12-07 00:43:40,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91263768] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:43:40,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40637522] [2021-12-07 00:43:40,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:43:40,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:43:40,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:43:40,855 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:43:40,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-12-07 00:43:42,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:43:42,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:43:42,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 150 conjunts are in the unsatisfiable core [2021-12-07 00:43:42,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:43:46,957 INFO L134 CoverageAnalysis]: Checked inductivity of 8104 backedges. 0 proven. 3658 refuted. 0 times theorem prover too weak. 4446 trivial. 0 not checked. [2021-12-07 00:43:46,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:44:26,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40637522] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:44:26,617 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:44:26,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 117 [2021-12-07 00:44:26,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843045569] [2021-12-07 00:44:26,618 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:44:26,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2021-12-07 00:44:26,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:44:26,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-12-07 00:44:26,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=13892, Unknown=0, NotChecked=0, Total=14280 [2021-12-07 00:44:26,620 INFO L87 Difference]: Start difference. First operand 617 states and 681 transitions. Second operand has 118 states, 117 states have (on average 2.5042735042735043) internal successors, (293), 117 states have internal predecessors, (293), 5 states have call successors, (5), 2 states have call predecessors, (5), 38 states have return successors, (75), 75 states have call predecessors, (75), 4 states have call successors, (75) [2021-12-07 00:44:35,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:44:35,009 INFO L93 Difference]: Finished difference Result 626 states and 691 transitions. [2021-12-07 00:44:35,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-12-07 00:44:35,009 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 2.5042735042735043) internal successors, (293), 117 states have internal predecessors, (293), 5 states have call successors, (5), 2 states have call predecessors, (5), 38 states have return successors, (75), 75 states have call predecessors, (75), 4 states have call successors, (75) Word has length 464 [2021-12-07 00:44:35,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:44:35,012 INFO L225 Difference]: With dead ends: 626 [2021-12-07 00:44:35,012 INFO L226 Difference]: Without dead ends: 623 [2021-12-07 00:44:35,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 468 SyntacticMatches, 35 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7137 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=1171, Invalid=36659, Unknown=0, NotChecked=0, Total=37830 [2021-12-07 00:44:35,014 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 512 mSDsluCounter, 7617 mSDsCounter, 0 mSdLazyCounter, 14227 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 7712 SdHoareTripleChecker+Invalid, 14564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 14227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:44:35,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 7712 Invalid, 14564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 14227 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-07 00:44:35,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-12-07 00:44:35,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 622. [2021-12-07 00:44:35,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 500 states have (on average 1.088) internal successors, (544), 500 states have internal predecessors, (544), 53 states have call successors, (53), 32 states have call predecessors, (53), 68 states have return successors, (89), 89 states have call predecessors, (89), 52 states have call successors, (89) [2021-12-07 00:44:35,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 686 transitions. [2021-12-07 00:44:35,033 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 686 transitions. Word has length 464 [2021-12-07 00:44:35,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:44:35,033 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 686 transitions. [2021-12-07 00:44:35,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 2.5042735042735043) internal successors, (293), 117 states have internal predecessors, (293), 5 states have call successors, (5), 2 states have call predecessors, (5), 38 states have return successors, (75), 75 states have call predecessors, (75), 4 states have call successors, (75) [2021-12-07 00:44:35,033 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 686 transitions. [2021-12-07 00:44:35,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2021-12-07 00:44:35,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:44:35,036 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 38, 38, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:44:35,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-12-07 00:44:35,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-12-07 00:44:35,237 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:44:35,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:44:35,238 INFO L85 PathProgramCache]: Analyzing trace with hash -571625310, now seen corresponding path program 33 times [2021-12-07 00:44:35,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:44:35,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084860965] [2021-12-07 00:44:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:44:35,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:44:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:35,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:44:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:35,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 00:44:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:35,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:35,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:35,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:36,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:36,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:36,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:36,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:36,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:36,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:36,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:36,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:36,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:37,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:37,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:37,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:37,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:37,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:37,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:37,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:37,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:37,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:37,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:38,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:38,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:38,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:38,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:38,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:38,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:38,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:38,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:38,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:38,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:38,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:39,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:39,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:39,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:39,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:39,311 INFO L134 CoverageAnalysis]: Checked inductivity of 8551 backedges. 0 proven. 3852 refuted. 0 times theorem prover too weak. 4699 trivial. 0 not checked. [2021-12-07 00:44:39,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:44:39,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084860965] [2021-12-07 00:44:39,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084860965] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:44:39,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28541699] [2021-12-07 00:44:39,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:44:39,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:44:39,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:44:39,312 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:44:39,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-12-07 00:44:41,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2021-12-07 00:44:41,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:44:41,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 154 conjunts are in the unsatisfiable core [2021-12-07 00:44:41,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:44:46,024 INFO L134 CoverageAnalysis]: Checked inductivity of 8551 backedges. 0 proven. 3852 refuted. 0 times theorem prover too weak. 4699 trivial. 0 not checked. [2021-12-07 00:44:46,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:45:28,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28541699] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:45:28,367 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:45:28,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 120 [2021-12-07 00:45:28,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482356680] [2021-12-07 00:45:28,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:45:28,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2021-12-07 00:45:28,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:45:28,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2021-12-07 00:45:28,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=14608, Unknown=0, NotChecked=0, Total=15006 [2021-12-07 00:45:28,369 INFO L87 Difference]: Start difference. First operand 622 states and 686 transitions. Second operand has 121 states, 120 states have (on average 2.5) internal successors, (300), 120 states have internal predecessors, (300), 5 states have call successors, (5), 2 states have call predecessors, (5), 39 states have return successors, (77), 77 states have call predecessors, (77), 4 states have call successors, (77) [2021-12-07 00:45:37,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:45:37,283 INFO L93 Difference]: Finished difference Result 631 states and 696 transitions. [2021-12-07 00:45:37,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-12-07 00:45:37,283 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 120 states have (on average 2.5) internal successors, (300), 120 states have internal predecessors, (300), 5 states have call successors, (5), 2 states have call predecessors, (5), 39 states have return successors, (77), 77 states have call predecessors, (77), 4 states have call successors, (77) Word has length 476 [2021-12-07 00:45:37,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:45:37,285 INFO L225 Difference]: With dead ends: 631 [2021-12-07 00:45:37,285 INFO L226 Difference]: Without dead ends: 628 [2021-12-07 00:45:37,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 480 SyntacticMatches, 36 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7520 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=1202, Invalid=38598, Unknown=0, NotChecked=0, Total=39800 [2021-12-07 00:45:37,287 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 405 mSDsluCounter, 7071 mSDsCounter, 0 mSdLazyCounter, 14286 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 7167 SdHoareTripleChecker+Invalid, 14555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 14286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:45:37,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 7167 Invalid, 14555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 14286 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-07 00:45:37,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-12-07 00:45:37,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 627. [2021-12-07 00:45:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 504 states have (on average 1.0873015873015872) internal successors, (548), 504 states have internal predecessors, (548), 53 states have call successors, (53), 32 states have call predecessors, (53), 69 states have return successors, (90), 90 states have call predecessors, (90), 52 states have call successors, (90) [2021-12-07 00:45:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 691 transitions. [2021-12-07 00:45:37,301 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 691 transitions. Word has length 476 [2021-12-07 00:45:37,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:45:37,301 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 691 transitions. [2021-12-07 00:45:37,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 120 states have (on average 2.5) internal successors, (300), 120 states have internal predecessors, (300), 5 states have call successors, (5), 2 states have call predecessors, (5), 39 states have return successors, (77), 77 states have call predecessors, (77), 4 states have call successors, (77) [2021-12-07 00:45:37,301 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 691 transitions. [2021-12-07 00:45:37,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2021-12-07 00:45:37,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:45:37,304 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 39, 39, 39, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:45:37,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-12-07 00:45:37,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:45:37,505 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-07 00:45:37,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:45:37,506 INFO L85 PathProgramCache]: Analyzing trace with hash 681231190, now seen corresponding path program 34 times [2021-12-07 00:45:37,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:45:37,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900297458] [2021-12-07 00:45:37,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:45:37,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:45:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:37,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 00:45:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:37,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 00:45:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:37,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:38,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:38,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:38,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:38,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:38,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:38,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:38,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:38,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:39,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:39,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:39,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:39,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:39,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:39,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:39,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:39,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:39,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:39,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:40,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:40,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:40,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:40,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:40,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:40,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:40,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:40,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:40,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:40,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:40,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:41,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:41,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:41,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:41,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:41,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:41,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:41,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:41,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:45:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:45:41,665 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 4591 refuted. 0 times theorem prover too weak. 4980 trivial. 0 not checked. [2021-12-07 00:45:41,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:45:41,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900297458] [2021-12-07 00:45:41,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900297458] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:45:41,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678563320] [2021-12-07 00:45:41,665 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 00:45:41,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:45:41,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:45:41,666 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:45:41,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e8dba94-dd02-465f-96c4-6bf9e2559c55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process