./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Primes.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF --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 0.2.1-dev-53f42b1 [2021-11-20 07:11:46,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:11:46,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:11:46,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:11:46,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:11:46,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:11:46,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:11:46,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:11:46,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:11:46,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:11:46,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:11:46,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:11:46,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:11:46,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:11:46,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:11:46,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:11:46,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:11:46,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:11:46,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:11:46,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:11:46,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:11:46,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:11:46,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:11:46,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:11:46,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:11:46,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:11:46,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:11:46,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:11:46,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:11:46,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:11:46,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:11:46,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:11:46,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:11:46,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:11:46,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:11:46,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:11:46,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:11:46,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:11:46,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:11:46,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:11:46,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:11:46,114 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-20 07:11:46,149 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:11:46,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:11:46,152 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:11:46,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:11:46,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:11:46,160 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:11:46,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:11:46,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:11:46,162 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:11:46,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:11:46,163 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:11:46,164 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:11:46,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:11:46,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:11:46,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:11:46,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:11:46,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:11:46,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:11:46,165 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-20 07:11:46,165 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:11:46,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:11:46,166 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:11:46,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:11:46,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:11:46,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:11:46,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:11:46,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:11:46,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:11:46,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:11:46,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:11:46,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:11:46,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:11:46,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:11:46,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:11:46,169 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_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e [2021-11-20 07:11:46,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:11:46,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:11:46,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:11:46,478 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:11:46,482 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:11:46,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/recursive/Primes.c [2021-11-20 07:11:46,571 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/data/5b919b890/bf3b3eb764eb4727b643b349e87f401a/FLAG7c606522a [2021-11-20 07:11:47,038 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:11:47,039 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/sv-benchmarks/c/recursive/Primes.c [2021-11-20 07:11:47,046 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/data/5b919b890/bf3b3eb764eb4727b643b349e87f401a/FLAG7c606522a [2021-11-20 07:11:47,393 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/data/5b919b890/bf3b3eb764eb4727b643b349e87f401a [2021-11-20 07:11:47,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:11:47,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:11:47,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:11:47,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:11:47,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:11:47,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:11:47" (1/1) ... [2021-11-20 07:11:47,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26217f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:47, skipping insertion in model container [2021-11-20 07:11:47,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:11:47" (1/1) ... [2021-11-20 07:11:47,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:11:47,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:11:47,710 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_0000ea21-52b2-461c-9abe-7a14bd10c277/sv-benchmarks/c/recursive/Primes.c[2190,2203] [2021-11-20 07:11:47,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:11:47,726 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:11:47,774 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_0000ea21-52b2-461c-9abe-7a14bd10c277/sv-benchmarks/c/recursive/Primes.c[2190,2203] [2021-11-20 07:11:47,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:11:47,797 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:11:47,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:47 WrapperNode [2021-11-20 07:11:47,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:11:47,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:11:47,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:11:47,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:11:47,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:47" (1/1) ... [2021-11-20 07:11:47,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:47" (1/1) ... [2021-11-20 07:11:47,852 INFO L137 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2021-11-20 07:11:47,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:11:47,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:11:47,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:11:47,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:11:47,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:47" (1/1) ... [2021-11-20 07:11:47,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:47" (1/1) ... [2021-11-20 07:11:47,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:47" (1/1) ... [2021-11-20 07:11:47,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:47" (1/1) ... [2021-11-20 07:11:47,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:47" (1/1) ... [2021-11-20 07:11:47,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:47" (1/1) ... [2021-11-20 07:11:47,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:47" (1/1) ... [2021-11-20 07:11:47,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:11:47,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:11:47,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:11:47,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:11:47,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:47" (1/1) ... [2021-11-20 07:11:47,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:11:47,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:47,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:11:47,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:11:47,991 INFO L130 BoogieDeclarations]: Found specification of procedure multiple_of [2021-11-20 07:11:47,991 INFO L138 BoogieDeclarations]: Found implementation of procedure multiple_of [2021-11-20 07:11:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:11:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2021-11-20 07:11:47,992 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2021-11-20 07:11:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure is_prime_ [2021-11-20 07:11:47,993 INFO L138 BoogieDeclarations]: Found implementation of procedure is_prime_ [2021-11-20 07:11:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:11:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:11:47,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:11:48,077 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:11:48,079 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:11:48,404 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:11:48,414 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:11:48,418 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 07:11:48,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:11:48 BoogieIcfgContainer [2021-11-20 07:11:48,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:11:48,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:11:48,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:11:48,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:11:48,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:11:47" (1/3) ... [2021-11-20 07:11:48,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b58b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:11:48, skipping insertion in model container [2021-11-20 07:11:48,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:11:47" (2/3) ... [2021-11-20 07:11:48,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b58b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:11:48, skipping insertion in model container [2021-11-20 07:11:48,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:11:48" (3/3) ... [2021-11-20 07:11:48,435 INFO L111 eAbstractionObserver]: Analyzing ICFG Primes.c [2021-11-20 07:11:48,441 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:11:48,441 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-20 07:11:48,492 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:11:48,500 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 [2021-11-20 07:11:48,500 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-20 07:11:48,522 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) [2021-11-20 07:11:48,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-20 07:11:48,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:48,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-20 07:11:48,527 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)] === [2021-11-20 07:11:48,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:48,533 INFO L85 PathProgramCache]: Analyzing trace with hash 2957412, now seen corresponding path program 1 times [2021-11-20 07:11:48,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:48,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707998518] [2021-11-20 07:11:48,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:48,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:48,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:48,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707998518] [2021-11-20 07:11:48,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707998518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:48,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:48,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:11:48,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658029841] [2021-11-20 07:11:48,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:48,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:11:48,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:48,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:11:48,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:11:48,838 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) [2021-11-20 07:11:48,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:48,878 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2021-11-20 07:11:48,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:11:48,886 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 [2021-11-20 07:11:48,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:48,895 INFO L225 Difference]: With dead ends: 89 [2021-11-20 07:11:48,895 INFO L226 Difference]: Without dead ends: 76 [2021-11-20 07:11:48,898 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 [2021-11-20 07:11:48,902 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 [2021-11-20 07:11:48,903 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] [2021-11-20 07:11:48,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-20 07:11:48,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-11-20 07:11:48,946 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) [2021-11-20 07:11:48,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2021-11-20 07:11:48,951 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 4 [2021-11-20 07:11:48,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:48,952 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2021-11-20 07:11:48,952 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) [2021-11-20 07:11:48,952 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2021-11-20 07:11:48,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 07:11:48,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:48,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 07:11:48,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:11:48,954 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)] === [2021-11-20 07:11:48,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:48,955 INFO L85 PathProgramCache]: Analyzing trace with hash 91679879, now seen corresponding path program 1 times [2021-11-20 07:11:48,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:48,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425407586] [2021-11-20 07:11:48,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:48,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:48,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:48,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425407586] [2021-11-20 07:11:48,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425407586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:48,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:48,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:11:48,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274437426] [2021-11-20 07:11:48,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:48,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:11:48,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:48,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:11:48,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:11:48,988 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) [2021-11-20 07:11:49,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:49,004 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2021-11-20 07:11:49,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:11:49,009 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 [2021-11-20 07:11:49,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:49,011 INFO L225 Difference]: With dead ends: 76 [2021-11-20 07:11:49,013 INFO L226 Difference]: Without dead ends: 75 [2021-11-20 07:11:49,014 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 [2021-11-20 07:11:49,017 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 [2021-11-20 07:11:49,019 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] [2021-11-20 07:11:49,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-20 07:11:49,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-11-20 07:11:49,036 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) [2021-11-20 07:11:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2021-11-20 07:11:49,049 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 5 [2021-11-20 07:11:49,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:49,050 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2021-11-20 07:11:49,051 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) [2021-11-20 07:11:49,052 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2021-11-20 07:11:49,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 07:11:49,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:49,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:11:49,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:11:49,056 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)] === [2021-11-20 07:11:49,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:49,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1790314255, now seen corresponding path program 1 times [2021-11-20 07:11:49,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:49,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440323019] [2021-11-20 07:11:49,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:49,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:49,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:49,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440323019] [2021-11-20 07:11:49,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440323019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:49,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:49,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:11:49,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288543084] [2021-11-20 07:11:49,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:49,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:11:49,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:49,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:11:49,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:11:49,140 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) [2021-11-20 07:11:49,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:49,265 INFO L93 Difference]: Finished difference Result 139 states and 178 transitions. [2021-11-20 07:11:49,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:11:49,266 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 [2021-11-20 07:11:49,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:49,269 INFO L225 Difference]: With dead ends: 139 [2021-11-20 07:11:49,269 INFO L226 Difference]: Without dead ends: 70 [2021-11-20 07:11:49,271 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 [2021-11-20 07:11:49,273 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 43 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:49,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 249 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:11:49,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-20 07:11:49,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2021-11-20 07:11:49,285 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) [2021-11-20 07:11:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2021-11-20 07:11:49,287 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 15 [2021-11-20 07:11:49,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:49,288 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2021-11-20 07:11:49,288 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) [2021-11-20 07:11:49,288 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2021-11-20 07:11:49,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 07:11:49,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:49,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:11:49,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 07:11:49,290 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)] === [2021-11-20 07:11:49,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:49,291 INFO L85 PathProgramCache]: Analyzing trace with hash -334825923, now seen corresponding path program 1 times [2021-11-20 07:11:49,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:49,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103452299] [2021-11-20 07:11:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:49,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:49,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:49,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:49,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103452299] [2021-11-20 07:11:49,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103452299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:49,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:49,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:11:49,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323371615] [2021-11-20 07:11:49,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:49,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:11:49,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:49,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:11:49,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:11:49,350 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) [2021-11-20 07:11:49,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:49,427 INFO L93 Difference]: Finished difference Result 145 states and 178 transitions. [2021-11-20 07:11:49,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:11:49,428 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 [2021-11-20 07:11:49,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:49,430 INFO L225 Difference]: With dead ends: 145 [2021-11-20 07:11:49,430 INFO L226 Difference]: Without dead ends: 83 [2021-11-20 07:11:49,431 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 [2021-11-20 07:11:49,433 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, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:49,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 276 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:11:49,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-20 07:11:49,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2021-11-20 07:11:49,446 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) [2021-11-20 07:11:49,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 95 transitions. [2021-11-20 07:11:49,451 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 95 transitions. Word has length 16 [2021-11-20 07:11:49,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:49,452 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 95 transitions. [2021-11-20 07:11:49,452 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) [2021-11-20 07:11:49,452 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 95 transitions. [2021-11-20 07:11:49,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 07:11:49,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:49,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:11:49,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 07:11:49,454 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)] === [2021-11-20 07:11:49,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:49,454 INFO L85 PathProgramCache]: Analyzing trace with hash 355054241, now seen corresponding path program 1 times [2021-11-20 07:11:49,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:49,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679745107] [2021-11-20 07:11:49,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:49,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:49,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:49,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679745107] [2021-11-20 07:11:49,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679745107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:49,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:49,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:11:49,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382206392] [2021-11-20 07:11:49,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:49,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:11:49,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:49,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:11:49,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:11:49,581 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) [2021-11-20 07:11:49,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:49,743 INFO L93 Difference]: Finished difference Result 107 states and 129 transitions. [2021-11-20 07:11:49,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:11:49,744 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 [2021-11-20 07:11:49,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:49,746 INFO L225 Difference]: With dead ends: 107 [2021-11-20 07:11:49,746 INFO L226 Difference]: Without dead ends: 106 [2021-11-20 07:11:49,747 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 [2021-11-20 07:11:49,748 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 44 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2021-11-20 07:11:49,748 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] [2021-11-20 07:11:49,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-20 07:11:49,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2021-11-20 07:11:49,760 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) [2021-11-20 07:11:49,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2021-11-20 07:11:49,762 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 18 [2021-11-20 07:11:49,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:49,763 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2021-11-20 07:11:49,763 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) [2021-11-20 07:11:49,763 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2021-11-20 07:11:49,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 07:11:49,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:49,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:11:49,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 07:11:49,765 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:11:49,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:49,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1880405543, now seen corresponding path program 1 times [2021-11-20 07:11:49,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:49,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519799897] [2021-11-20 07:11:49,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:49,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:49,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:11:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:49,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:49,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:49,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519799897] [2021-11-20 07:11:49,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519799897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:49,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:49,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:11:49,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064237780] [2021-11-20 07:11:49,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:49,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:11:49,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:49,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:11:49,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:11:49,876 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) [2021-11-20 07:11:49,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:49,940 INFO L93 Difference]: Finished difference Result 136 states and 165 transitions. [2021-11-20 07:11:49,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:11:49,941 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 [2021-11-20 07:11:49,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:49,943 INFO L225 Difference]: With dead ends: 136 [2021-11-20 07:11:49,943 INFO L226 Difference]: Without dead ends: 106 [2021-11-20 07:11:49,946 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 [2021-11-20 07:11:49,952 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 [2021-11-20 07:11:49,956 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] [2021-11-20 07:11:49,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-20 07:11:49,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2021-11-20 07:11:49,978 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) [2021-11-20 07:11:49,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 126 transitions. [2021-11-20 07:11:49,980 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 126 transitions. Word has length 19 [2021-11-20 07:11:49,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:49,980 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 126 transitions. [2021-11-20 07:11:49,981 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) [2021-11-20 07:11:49,981 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 126 transitions. [2021-11-20 07:11:49,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 07:11:49,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:49,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:11:49,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 07:11:49,982 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)] === [2021-11-20 07:11:49,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:49,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1878220355, now seen corresponding path program 1 times [2021-11-20 07:11:49,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:49,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793929318] [2021-11-20 07:11:49,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:49,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:50,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:50,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:50,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793929318] [2021-11-20 07:11:50,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793929318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:50,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:50,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:11:50,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501491925] [2021-11-20 07:11:50,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:50,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:11:50,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:50,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:11:50,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:11:50,061 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) [2021-11-20 07:11:50,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:50,189 INFO L93 Difference]: Finished difference Result 106 states and 126 transitions. [2021-11-20 07:11:50,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:11:50,189 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 [2021-11-20 07:11:50,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:50,191 INFO L225 Difference]: With dead ends: 106 [2021-11-20 07:11:50,192 INFO L226 Difference]: Without dead ends: 105 [2021-11-20 07:11:50,192 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 [2021-11-20 07:11:50,196 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 42 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:50,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 283 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:11:50,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-20 07:11:50,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2021-11-20 07:11:50,220 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) [2021-11-20 07:11:50,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2021-11-20 07:11:50,225 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 19 [2021-11-20 07:11:50,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:50,226 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2021-11-20 07:11:50,226 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) [2021-11-20 07:11:50,226 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2021-11-20 07:11:50,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 07:11:50,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:50,228 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] [2021-11-20 07:11:50,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 07:11:50,229 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:11:50,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:50,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1361525461, now seen corresponding path program 1 times [2021-11-20 07:11:50,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:50,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164773179] [2021-11-20 07:11:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:50,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:50,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:11:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:50,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:50,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164773179] [2021-11-20 07:11:50,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164773179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:50,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:50,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:11:50,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809004344] [2021-11-20 07:11:50,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:50,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:11:50,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:50,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:11:50,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:11:50,343 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) [2021-11-20 07:11:50,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:50,411 INFO L93 Difference]: Finished difference Result 143 states and 173 transitions. [2021-11-20 07:11:50,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:11:50,414 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 [2021-11-20 07:11:50,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:50,421 INFO L225 Difference]: With dead ends: 143 [2021-11-20 07:11:50,421 INFO L226 Difference]: Without dead ends: 119 [2021-11-20 07:11:50,422 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 [2021-11-20 07:11:50,424 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 [2021-11-20 07:11:50,425 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] [2021-11-20 07:11:50,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-20 07:11:50,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 114. [2021-11-20 07:11:50,449 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) [2021-11-20 07:11:50,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions. [2021-11-20 07:11:50,458 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 20 [2021-11-20 07:11:50,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:50,459 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 137 transitions. [2021-11-20 07:11:50,459 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) [2021-11-20 07:11:50,460 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions. [2021-11-20 07:11:50,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 07:11:50,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:50,462 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] [2021-11-20 07:11:50,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 07:11:50,462 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:11:50,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:50,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1538837383, now seen corresponding path program 1 times [2021-11-20 07:11:50,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:50,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665775511] [2021-11-20 07:11:50,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:50,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:50,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:11:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:50,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:50,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665775511] [2021-11-20 07:11:50,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665775511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:50,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:50,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:11:50,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962027963] [2021-11-20 07:11:50,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:50,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:11:50,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:50,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:11:50,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:11:50,521 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) [2021-11-20 07:11:50,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:50,593 INFO L93 Difference]: Finished difference Result 137 states and 167 transitions. [2021-11-20 07:11:50,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:11:50,594 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 [2021-11-20 07:11:50,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:50,597 INFO L225 Difference]: With dead ends: 137 [2021-11-20 07:11:50,597 INFO L226 Difference]: Without dead ends: 135 [2021-11-20 07:11:50,598 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 [2021-11-20 07:11:50,598 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, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:50,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 269 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:11:50,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-20 07:11:50,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2021-11-20 07:11:50,609 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) [2021-11-20 07:11:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 159 transitions. [2021-11-20 07:11:50,611 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 159 transitions. Word has length 22 [2021-11-20 07:11:50,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:50,612 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 159 transitions. [2021-11-20 07:11:50,612 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) [2021-11-20 07:11:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 159 transitions. [2021-11-20 07:11:50,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 07:11:50,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:50,613 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] [2021-11-20 07:11:50,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 07:11:50,614 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)] === [2021-11-20 07:11:50,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:50,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1613355843, now seen corresponding path program 1 times [2021-11-20 07:11:50,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:50,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15570736] [2021-11-20 07:11:50,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:50,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:50,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:50,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15570736] [2021-11-20 07:11:50,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15570736] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:11:50,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962541352] [2021-11-20 07:11:50,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:50,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:50,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:50,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:50,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:11:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:50,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 07:11:50,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:50,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:50,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:11:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:51,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962541352] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:11:51,078 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:11:51,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-20 07:11:51,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889665928] [2021-11-20 07:11:51,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:11:51,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:11:51,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:51,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:11:51,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:11:51,080 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) [2021-11-20 07:11:51,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:51,350 INFO L93 Difference]: Finished difference Result 252 states and 314 transitions. [2021-11-20 07:11:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 07:11:51,351 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 [2021-11-20 07:11:51,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:51,356 INFO L225 Difference]: With dead ends: 252 [2021-11-20 07:11:51,356 INFO L226 Difference]: Without dead ends: 143 [2021-11-20 07:11:51,359 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 [2021-11-20 07:11:51,360 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, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:51,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 516 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:11:51,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-20 07:11:51,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 140. [2021-11-20 07:11:51,375 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) [2021-11-20 07:11:51,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 172 transitions. [2021-11-20 07:11:51,378 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 172 transitions. Word has length 24 [2021-11-20 07:11:51,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:51,379 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 172 transitions. [2021-11-20 07:11:51,379 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) [2021-11-20 07:11:51,379 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 172 transitions. [2021-11-20 07:11:51,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 07:11:51,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:51,380 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] [2021-11-20 07:11:51,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:51,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 07:11:51,596 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)] === [2021-11-20 07:11:51,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:51,596 INFO L85 PathProgramCache]: Analyzing trace with hash 48447777, now seen corresponding path program 1 times [2021-11-20 07:11:51,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:51,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352340810] [2021-11-20 07:11:51,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:51,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 07:11:51,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:51,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352340810] [2021-11-20 07:11:51,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352340810] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:11:51,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621748050] [2021-11-20 07:11:51,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:51,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:51,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:51,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:51,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:11:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:51,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 07:11:51,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:52,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:52,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:11:52,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621748050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:52,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:11:52,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 15 [2021-11-20 07:11:52,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840634637] [2021-11-20 07:11:52,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:52,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:11:52,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:52,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:11:52,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:11:52,026 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) [2021-11-20 07:11:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:52,260 INFO L93 Difference]: Finished difference Result 163 states and 199 transitions. [2021-11-20 07:11:52,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:11:52,261 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 [2021-11-20 07:11:52,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:52,263 INFO L225 Difference]: With dead ends: 163 [2021-11-20 07:11:52,263 INFO L226 Difference]: Without dead ends: 161 [2021-11-20 07:11:52,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-11-20 07:11:52,265 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, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:52,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 359 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:11:52,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-20 07:11:52,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2021-11-20 07:11:52,280 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) [2021-11-20 07:11:52,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 190 transitions. [2021-11-20 07:11:52,284 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 190 transitions. Word has length 26 [2021-11-20 07:11:52,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:52,284 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 190 transitions. [2021-11-20 07:11:52,284 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) [2021-11-20 07:11:52,285 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 190 transitions. [2021-11-20 07:11:52,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 07:11:52,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:52,290 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] [2021-11-20 07:11:52,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:52,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-20 07:11:52,512 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:11:52,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:52,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2143137265, now seen corresponding path program 1 times [2021-11-20 07:11:52,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:52,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931133196] [2021-11-20 07:11:52,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:52,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:52,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:11:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:52,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:52,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:52,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931133196] [2021-11-20 07:11:52,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931133196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:52,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:52,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:11:52,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076065346] [2021-11-20 07:11:52,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:52,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:11:52,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:52,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:11:52,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:11:52,565 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) [2021-11-20 07:11:52,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:52,627 INFO L93 Difference]: Finished difference Result 181 states and 225 transitions. [2021-11-20 07:11:52,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:11:52,627 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 [2021-11-20 07:11:52,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:52,630 INFO L225 Difference]: With dead ends: 181 [2021-11-20 07:11:52,630 INFO L226 Difference]: Without dead ends: 179 [2021-11-20 07:11:52,631 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 [2021-11-20 07:11:52,631 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 [2021-11-20 07:11:52,632 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] [2021-11-20 07:11:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-20 07:11:52,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 170. [2021-11-20 07:11:52,647 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) [2021-11-20 07:11:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 210 transitions. [2021-11-20 07:11:52,650 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 210 transitions. Word has length 27 [2021-11-20 07:11:52,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:52,651 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 210 transitions. [2021-11-20 07:11:52,652 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) [2021-11-20 07:11:52,652 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 210 transitions. [2021-11-20 07:11:52,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 07:11:52,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:52,658 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] [2021-11-20 07:11:52,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 07:11:52,658 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)] === [2021-11-20 07:11:52,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:52,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1501881149, now seen corresponding path program 1 times [2021-11-20 07:11:52,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:52,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459067166] [2021-11-20 07:11:52,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:52,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:52,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:52,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459067166] [2021-11-20 07:11:52,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459067166] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:11:52,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518482522] [2021-11-20 07:11:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:52,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:52,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:52,759 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:52,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:11:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:52,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 07:11:52,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:53,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:53,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:11:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:53,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518482522] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:11:53,366 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:11:53,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2021-11-20 07:11:53,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861600066] [2021-11-20 07:11:53,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:11:53,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-20 07:11:53,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:53,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-20 07:11:53,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2021-11-20 07:11:53,372 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) [2021-11-20 07:11:54,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:54,429 INFO L93 Difference]: Finished difference Result 214 states and 267 transitions. [2021-11-20 07:11:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 07:11:54,429 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 [2021-11-20 07:11:54,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:54,432 INFO L225 Difference]: With dead ends: 214 [2021-11-20 07:11:54,432 INFO L226 Difference]: Without dead ends: 211 [2021-11-20 07:11:54,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=305, Invalid=1587, Unknown=0, NotChecked=0, Total=1892 [2021-11-20 07:11:54,434 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 315 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:54,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 917 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 07:11:54,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-20 07:11:54,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 198. [2021-11-20 07:11:54,448 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) [2021-11-20 07:11:54,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 245 transitions. [2021-11-20 07:11:54,450 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 245 transitions. Word has length 27 [2021-11-20 07:11:54,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:54,451 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 245 transitions. [2021-11-20 07:11:54,451 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) [2021-11-20 07:11:54,451 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 245 transitions. [2021-11-20 07:11:54,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 07:11:54,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:54,452 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] [2021-11-20 07:11:54,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:54,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 07:11:54,680 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:11:54,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:54,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1537468884, now seen corresponding path program 1 times [2021-11-20 07:11:54,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:54,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63600969] [2021-11-20 07:11:54,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:54,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:54,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:11:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:54,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:54,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63600969] [2021-11-20 07:11:54,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63600969] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:11:54,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793933577] [2021-11-20 07:11:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:54,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:54,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:54,768 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:54,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:11:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:54,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:11:54,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:54,902 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:11:54,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:11:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:11:54,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793933577] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:11:54,987 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:11:54,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2021-11-20 07:11:54,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020475649] [2021-11-20 07:11:54,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:11:54,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:11:54,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:54,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:11:54,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:11:54,992 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) [2021-11-20 07:11:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:55,083 INFO L93 Difference]: Finished difference Result 212 states and 260 transitions. [2021-11-20 07:11:55,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:11:55,084 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 [2021-11-20 07:11:55,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:55,087 INFO L225 Difference]: With dead ends: 212 [2021-11-20 07:11:55,087 INFO L226 Difference]: Without dead ends: 164 [2021-11-20 07:11:55,088 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 [2021-11-20 07:11:55,088 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 [2021-11-20 07:11:55,089 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] [2021-11-20 07:11:55,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-20 07:11:55,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2021-11-20 07:11:55,101 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) [2021-11-20 07:11:55,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 192 transitions. [2021-11-20 07:11:55,105 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 192 transitions. Word has length 32 [2021-11-20 07:11:55,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:55,105 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 192 transitions. [2021-11-20 07:11:55,106 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) [2021-11-20 07:11:55,106 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 192 transitions. [2021-11-20 07:11:55,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 07:11:55,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:55,108 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] [2021-11-20 07:11:55,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-20 07:11:55,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:55,318 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:11:55,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:55,318 INFO L85 PathProgramCache]: Analyzing trace with hash -118239160, now seen corresponding path program 1 times [2021-11-20 07:11:55,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:55,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094550072] [2021-11-20 07:11:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:55,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:55,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:11:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:11:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:11:55,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:55,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094550072] [2021-11-20 07:11:55,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094550072] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:11:55,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984132872] [2021-11-20 07:11:55,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:55,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:55,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:55,386 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:55,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 07:11:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:55,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 07:11:55,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:55,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:11:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:55,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984132872] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:11:55,663 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:11:55,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2021-11-20 07:11:55,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318400388] [2021-11-20 07:11:55,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:11:55,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 07:11:55,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:55,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 07:11:55,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:11:55,690 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) [2021-11-20 07:11:55,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:55,860 INFO L93 Difference]: Finished difference Result 174 states and 210 transitions. [2021-11-20 07:11:55,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:11:55,861 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 [2021-11-20 07:11:55,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:55,863 INFO L225 Difference]: With dead ends: 174 [2021-11-20 07:11:55,864 INFO L226 Difference]: Without dead ends: 162 [2021-11-20 07:11:55,867 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 [2021-11-20 07:11:55,869 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 48 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:55,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 600 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:11:55,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-20 07:11:55,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2021-11-20 07:11:55,882 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) [2021-11-20 07:11:55,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 191 transitions. [2021-11-20 07:11:55,884 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 191 transitions. Word has length 31 [2021-11-20 07:11:55,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:55,885 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 191 transitions. [2021-11-20 07:11:55,885 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) [2021-11-20 07:11:55,886 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 191 transitions. [2021-11-20 07:11:55,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 07:11:55,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:55,887 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] [2021-11-20 07:11:55,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-20 07:11:56,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:56,101 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)] === [2021-11-20 07:11:56,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:56,101 INFO L85 PathProgramCache]: Analyzing trace with hash -959786179, now seen corresponding path program 2 times [2021-11-20 07:11:56,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:56,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044474390] [2021-11-20 07:11:56,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:56,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:56,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:56,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044474390] [2021-11-20 07:11:56,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044474390] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:11:56,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203553150] [2021-11-20 07:11:56,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:11:56,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:56,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:56,218 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:56,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 07:11:56,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:11:56,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:11:56,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 07:11:56,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:56,556 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:56,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:11:56,861 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:56,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203553150] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:11:56,862 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:11:56,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2021-11-20 07:11:56,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788273213] [2021-11-20 07:11:56,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:11:56,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-20 07:11:56,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:56,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-20 07:11:56,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2021-11-20 07:11:56,865 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) [2021-11-20 07:11:57,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:57,577 INFO L93 Difference]: Finished difference Result 218 states and 268 transitions. [2021-11-20 07:11:57,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 07:11:57,578 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 [2021-11-20 07:11:57,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:57,580 INFO L225 Difference]: With dead ends: 218 [2021-11-20 07:11:57,580 INFO L226 Difference]: Without dead ends: 217 [2021-11-20 07:11:57,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=1202, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 07:11:57,582 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 297 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:57,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 573 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 07:11:57,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-20 07:11:57,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 205. [2021-11-20 07:11:57,597 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) [2021-11-20 07:11:57,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 245 transitions. [2021-11-20 07:11:57,600 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 245 transitions. Word has length 32 [2021-11-20 07:11:57,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:57,600 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 245 transitions. [2021-11-20 07:11:57,601 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) [2021-11-20 07:11:57,601 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 245 transitions. [2021-11-20 07:11:57,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 07:11:57,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:57,602 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] [2021-11-20 07:11:57,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:57,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 07:11:57,828 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:11:57,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:57,828 INFO L85 PathProgramCache]: Analyzing trace with hash 644683350, now seen corresponding path program 1 times [2021-11-20 07:11:57,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:57,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613921319] [2021-11-20 07:11:57,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:57,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:57,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:11:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:57,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:11:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:57,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:57,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:57,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613921319] [2021-11-20 07:11:57,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613921319] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:11:57,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026169577] [2021-11-20 07:11:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:57,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:57,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:57,928 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:57,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 07:11:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:57,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:11:57,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:58,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:11:58,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:58,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026169577] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:11:58,188 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:11:58,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-11-20 07:11:58,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001359277] [2021-11-20 07:11:58,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:11:58,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 07:11:58,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:58,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 07:11:58,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:11:58,192 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) [2021-11-20 07:11:58,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:58,281 INFO L93 Difference]: Finished difference Result 215 states and 257 transitions. [2021-11-20 07:11:58,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:11:58,282 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 [2021-11-20 07:11:58,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:58,284 INFO L225 Difference]: With dead ends: 215 [2021-11-20 07:11:58,284 INFO L226 Difference]: Without dead ends: 214 [2021-11-20 07:11:58,285 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 [2021-11-20 07:11:58,286 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 [2021-11-20 07:11:58,286 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] [2021-11-20 07:11:58,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-20 07:11:58,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 211. [2021-11-20 07:11:58,304 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) [2021-11-20 07:11:58,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 252 transitions. [2021-11-20 07:11:58,307 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 252 transitions. Word has length 32 [2021-11-20 07:11:58,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:58,308 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 252 transitions. [2021-11-20 07:11:58,308 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) [2021-11-20 07:11:58,308 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 252 transitions. [2021-11-20 07:11:58,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 07:11:58,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:58,309 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] [2021-11-20 07:11:58,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:58,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 07:11:58,525 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:11:58,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:58,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1489652536, now seen corresponding path program 1 times [2021-11-20 07:11:58,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:58,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583890270] [2021-11-20 07:11:58,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:58,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:58,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:11:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:58,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:11:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:58,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:58,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:58,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583890270] [2021-11-20 07:11:58,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583890270] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:11:58,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138861658] [2021-11-20 07:11:58,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:58,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:58,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:58,606 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:58,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 07:11:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:58,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:11:58,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:58,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:58,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:11:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:11:58,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138861658] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:11:58,880 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:11:58,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-11-20 07:11:58,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437722806] [2021-11-20 07:11:58,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:11:58,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 07:11:58,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:58,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 07:11:58,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:11:58,882 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) [2021-11-20 07:11:58,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:58,988 INFO L93 Difference]: Finished difference Result 213 states and 255 transitions. [2021-11-20 07:11:58,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:11:58,989 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 [2021-11-20 07:11:58,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:58,990 INFO L225 Difference]: With dead ends: 213 [2021-11-20 07:11:58,991 INFO L226 Difference]: Without dead ends: 208 [2021-11-20 07:11:58,991 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 [2021-11-20 07:11:58,992 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 [2021-11-20 07:11:58,992 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] [2021-11-20 07:11:58,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-20 07:11:59,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2021-11-20 07:11:59,006 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) [2021-11-20 07:11:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 246 transitions. [2021-11-20 07:11:59,008 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 246 transitions. Word has length 33 [2021-11-20 07:11:59,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:59,009 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 246 transitions. [2021-11-20 07:11:59,009 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) [2021-11-20 07:11:59,009 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 246 transitions. [2021-11-20 07:11:59,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-20 07:11:59,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:59,011 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] [2021-11-20 07:11:59,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:59,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 07:11:59,232 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)] === [2021-11-20 07:11:59,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:59,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1095335930, now seen corresponding path program 1 times [2021-11-20 07:11:59,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:59,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69922549] [2021-11-20 07:11:59,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:59,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:59,268 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-20 07:11:59,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:59,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69922549] [2021-11-20 07:11:59,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69922549] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:11:59,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420955389] [2021-11-20 07:11:59,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:59,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:59,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:11:59,270 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:11:59,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 07:11:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:59,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:11:59,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:11:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-20 07:11:59,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:11:59,513 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-20 07:11:59,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420955389] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:11:59,514 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:11:59,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-20 07:11:59,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760699078] [2021-11-20 07:11:59,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:11:59,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:11:59,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:59,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:11:59,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:11:59,516 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) [2021-11-20 07:11:59,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:59,633 INFO L93 Difference]: Finished difference Result 427 states and 527 transitions. [2021-11-20 07:11:59,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:11:59,634 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 [2021-11-20 07:11:59,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:59,637 INFO L225 Difference]: With dead ends: 427 [2021-11-20 07:11:59,637 INFO L226 Difference]: Without dead ends: 240 [2021-11-20 07:11:59,639 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 [2021-11-20 07:11:59,640 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 36 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:59,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 398 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:11:59,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-20 07:11:59,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 214. [2021-11-20 07:11:59,668 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) [2021-11-20 07:11:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 251 transitions. [2021-11-20 07:11:59,671 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 251 transitions. Word has length 38 [2021-11-20 07:11:59,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:59,671 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 251 transitions. [2021-11-20 07:11:59,672 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) [2021-11-20 07:11:59,672 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 251 transitions. [2021-11-20 07:11:59,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 07:11:59,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:59,673 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] [2021-11-20 07:11:59,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 07:11:59,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:11:59,900 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)] === [2021-11-20 07:11:59,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:59,900 INFO L85 PathProgramCache]: Analyzing trace with hash -350622166, now seen corresponding path program 1 times [2021-11-20 07:11:59,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:59,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222039818] [2021-11-20 07:11:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:59,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:00,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:00,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222039818] [2021-11-20 07:12:00,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222039818] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:12:00,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630531813] [2021-11-20 07:12:00,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:00,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:00,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:00,029 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:12:00,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 07:12:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:00,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 07:12:00,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-20 07:12:00,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:12:00,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630531813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:12:00,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:12:00,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2021-11-20 07:12:00,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558908363] [2021-11-20 07:12:00,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:12:00,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:12:00,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:00,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:12:00,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:12:00,325 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) [2021-11-20 07:12:00,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:12:00,511 INFO L93 Difference]: Finished difference Result 227 states and 265 transitions. [2021-11-20 07:12:00,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:12:00,512 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 [2021-11-20 07:12:00,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:12:00,514 INFO L225 Difference]: With dead ends: 227 [2021-11-20 07:12:00,514 INFO L226 Difference]: Without dead ends: 226 [2021-11-20 07:12:00,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2021-11-20 07:12:00,515 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 59 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:12:00,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 344 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:12:00,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-11-20 07:12:00,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 213. [2021-11-20 07:12:00,528 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) [2021-11-20 07:12:00,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 247 transitions. [2021-11-20 07:12:00,530 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 247 transitions. Word has length 40 [2021-11-20 07:12:00,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:12:00,530 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 247 transitions. [2021-11-20 07:12:00,531 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) [2021-11-20 07:12:00,531 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 247 transitions. [2021-11-20 07:12:00,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-20 07:12:00,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:12:00,532 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] [2021-11-20 07:12:00,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:00,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:00,752 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:12:00,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:00,752 INFO L85 PathProgramCache]: Analyzing trace with hash 287216546, now seen corresponding path program 1 times [2021-11-20 07:12:00,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:00,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512713178] [2021-11-20 07:12:00,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:00,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:00,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:12:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:00,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:12:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:00,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:12:00,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:00,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512713178] [2021-11-20 07:12:00,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512713178] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:12:00,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067193075] [2021-11-20 07:12:00,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:00,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:00,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:00,858 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:12:00,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 07:12:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:00,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 07:12:00,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:12:01,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:12:01,395 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:12:01,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067193075] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:12:01,396 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:12:01,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2021-11-20 07:12:01,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676313352] [2021-11-20 07:12:01,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:12:01,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 07:12:01,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:01,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 07:12:01,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-11-20 07:12:01,398 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) [2021-11-20 07:12:01,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:12:01,635 INFO L93 Difference]: Finished difference Result 228 states and 265 transitions. [2021-11-20 07:12:01,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:12:01,636 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 [2021-11-20 07:12:01,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:12:01,638 INFO L225 Difference]: With dead ends: 228 [2021-11-20 07:12:01,638 INFO L226 Difference]: Without dead ends: 223 [2021-11-20 07:12:01,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2021-11-20 07:12:01,640 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 80 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:12:01,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 791 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:12:01,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-20 07:12:01,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2021-11-20 07:12:01,660 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) [2021-11-20 07:12:01,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 257 transitions. [2021-11-20 07:12:01,663 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 257 transitions. Word has length 44 [2021-11-20 07:12:01,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:12:01,663 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 257 transitions. [2021-11-20 07:12:01,664 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) [2021-11-20 07:12:01,664 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 257 transitions. [2021-11-20 07:12:01,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-20 07:12:01,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:12:01,665 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] [2021-11-20 07:12:01,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:01,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:01,880 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)] === [2021-11-20 07:12:01,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:01,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1599875706, now seen corresponding path program 2 times [2021-11-20 07:12:01,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:01,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687964064] [2021-11-20 07:12:01,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:01,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:02,060 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:02,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:02,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687964064] [2021-11-20 07:12:02,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687964064] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:12:02,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536493053] [2021-11-20 07:12:02,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:12:02,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:02,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:02,062 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:12:02,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 07:12:02,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:12:02,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:12:02,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-20 07:12:02,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:02,497 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-20 07:12:02,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:12:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-20 07:12:02,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536493053] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:12:02,861 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:12:02,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2021-11-20 07:12:02,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137230588] [2021-11-20 07:12:02,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:12:02,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-20 07:12:02,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:02,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-20 07:12:02,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 07:12:02,863 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) [2021-11-20 07:12:05,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:12:05,934 INFO L93 Difference]: Finished difference Result 506 states and 603 transitions. [2021-11-20 07:12:05,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-20 07:12:05,938 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 [2021-11-20 07:12:05,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:12:05,942 INFO L225 Difference]: With dead ends: 506 [2021-11-20 07:12:05,943 INFO L226 Difference]: Without dead ends: 504 [2021-11-20 07:12:05,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1525 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1367, Invalid=6115, Unknown=0, NotChecked=0, Total=7482 [2021-11-20 07:12:05,949 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 635 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:12:05,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 1102 Invalid, 2468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 07:12:05,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-11-20 07:12:05,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 452. [2021-11-20 07:12:05,988 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) [2021-11-20 07:12:05,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 516 transitions. [2021-11-20 07:12:05,992 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 516 transitions. Word has length 46 [2021-11-20 07:12:05,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:12:05,993 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 516 transitions. [2021-11-20 07:12:05,993 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) [2021-11-20 07:12:05,993 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 516 transitions. [2021-11-20 07:12:05,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 07:12:05,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:12:05,995 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] [2021-11-20 07:12:06,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:06,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:06,220 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:12:06,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:06,220 INFO L85 PathProgramCache]: Analyzing trace with hash -2078564830, now seen corresponding path program 2 times [2021-11-20 07:12:06,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:06,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691678512] [2021-11-20 07:12:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:06,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:12:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:12:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 07:12:06,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:06,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691678512] [2021-11-20 07:12:06,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691678512] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:12:06,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023807881] [2021-11-20 07:12:06,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:12:06,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:06,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:06,479 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:12:06,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 07:12:06,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:12:06,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:12:06,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 07:12:06,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 07:12:06,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:12:07,935 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:12:07,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023807881] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:12:07,935 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:12:07,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 31 [2021-11-20 07:12:07,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764635279] [2021-11-20 07:12:07,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:12:07,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-20 07:12:07,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:07,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-20 07:12:07,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2021-11-20 07:12:07,939 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) [2021-11-20 07:12:08,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:12:08,511 INFO L93 Difference]: Finished difference Result 481 states and 552 transitions. [2021-11-20 07:12:08,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:12:08,512 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 [2021-11-20 07:12:08,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:12:08,516 INFO L225 Difference]: With dead ends: 481 [2021-11-20 07:12:08,516 INFO L226 Difference]: Without dead ends: 472 [2021-11-20 07:12:08,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=414, Invalid=1748, Unknown=0, NotChecked=0, Total=2162 [2021-11-20 07:12:08,519 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, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:12:08,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 646 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:12:08,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-11-20 07:12:08,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2021-11-20 07:12:08,545 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) [2021-11-20 07:12:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 536 transitions. [2021-11-20 07:12:08,549 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 536 transitions. Word has length 68 [2021-11-20 07:12:08,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:12:08,550 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 536 transitions. [2021-11-20 07:12:08,550 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) [2021-11-20 07:12:08,550 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 536 transitions. [2021-11-20 07:12:08,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-20 07:12:08,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:12:08,554 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] [2021-11-20 07:12:08,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:08,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:08,768 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:12:08,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:08,769 INFO L85 PathProgramCache]: Analyzing trace with hash 879219490, now seen corresponding path program 3 times [2021-11-20 07:12:08,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:08,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620100515] [2021-11-20 07:12:08,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:08,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:08,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:12:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:08,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:12:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:08,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:08,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:09,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:09,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:09,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:09,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:09,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-11-20 07:12:09,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:09,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620100515] [2021-11-20 07:12:09,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620100515] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:12:09,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026656585] [2021-11-20 07:12:09,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:12:09,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:09,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:09,254 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:12:09,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-20 07:12:09,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-20 07:12:09,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:12:09,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-20 07:12:09,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:10,126 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-11-20 07:12:10,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:12:16,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026656585] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:12:16,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:12:16,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2021-11-20 07:12:16,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254864645] [2021-11-20 07:12:16,948 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:12:16,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-20 07:12:16,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:16,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-20 07:12:16,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1112, Unknown=1, NotChecked=0, Total=1260 [2021-11-20 07:12:16,950 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) [2021-11-20 07:12:18,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:12:18,088 INFO L93 Difference]: Finished difference Result 481 states and 546 transitions. [2021-11-20 07:12:18,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 07:12:18,088 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 [2021-11-20 07:12:18,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:12:18,092 INFO L225 Difference]: With dead ends: 481 [2021-11-20 07:12:18,092 INFO L226 Difference]: Without dead ends: 478 [2021-11-20 07:12:18,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 123 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=354, Invalid=2401, Unknown=1, NotChecked=0, Total=2756 [2021-11-20 07:12:18,096 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 105 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:12:18,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 1143 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 07:12:18,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-20 07:12:18,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 477. [2021-11-20 07:12:18,123 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) [2021-11-20 07:12:18,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 541 transitions. [2021-11-20 07:12:18,126 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 541 transitions. Word has length 116 [2021-11-20 07:12:18,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:12:18,127 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 541 transitions. [2021-11-20 07:12:18,127 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) [2021-11-20 07:12:18,127 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 541 transitions. [2021-11-20 07:12:18,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-20 07:12:18,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:12:18,131 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] [2021-11-20 07:12:18,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:18,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-20 07:12:18,348 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:12:18,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:18,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1601731370, now seen corresponding path program 4 times [2021-11-20 07:12:18,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:18,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375711981] [2021-11-20 07:12:18,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:18,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:18,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:12:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:18,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 07:12:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:18,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:18,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:18,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:18,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:18,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:19,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:19,069 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-20 07:12:19,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:19,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375711981] [2021-11-20 07:12:19,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375711981] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:12:19,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251883420] [2021-11-20 07:12:19,070 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 07:12:19,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:19,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:19,072 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:12:19,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-20 07:12:19,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 07:12:19,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:12:19,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-20 07:12:19,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-20 07:12:20,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:12:21,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251883420] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:12:21,738 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:12:21,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 33 [2021-11-20 07:12:21,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660557049] [2021-11-20 07:12:21,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:12:21,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-20 07:12:21,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:21,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-20 07:12:21,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2021-11-20 07:12:21,741 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) [2021-11-20 07:12:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:12:23,043 INFO L93 Difference]: Finished difference Result 486 states and 551 transitions. [2021-11-20 07:12:23,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 07:12:23,043 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 [2021-11-20 07:12:23,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:12:23,047 INFO L225 Difference]: With dead ends: 486 [2021-11-20 07:12:23,047 INFO L226 Difference]: Without dead ends: 483 [2021-11-20 07:12:23,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 150 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=303, Invalid=2667, Unknown=0, NotChecked=0, Total=2970 [2021-11-20 07:12:23,050 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 115 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:12:23,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 1458 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 07:12:23,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-20 07:12:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 482. [2021-11-20 07:12:23,076 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) [2021-11-20 07:12:23,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 546 transitions. [2021-11-20 07:12:23,079 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 546 transitions. Word has length 142 [2021-11-20 07:12:23,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:12:23,080 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 546 transitions. [2021-11-20 07:12:23,080 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) [2021-11-20 07:12:23,080 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 546 transitions. [2021-11-20 07:12:23,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-20 07:12:23,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:12:23,084 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] [2021-11-20 07:12:23,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:23,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-20 07:12:23,300 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:12:23,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:23,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1195834786, now seen corresponding path program 5 times [2021-11-20 07:12:23,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:23,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808477964] [2021-11-20 07:12:23,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:23,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:23,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:12:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:23,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:12:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:23,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:23,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:23,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:23,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:23,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:23,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:23,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:23,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2021-11-20 07:12:24,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:24,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808477964] [2021-11-20 07:12:24,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808477964] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:12:24,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490456399] [2021-11-20 07:12:24,088 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 07:12:24,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:24,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:24,094 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:12:24,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-20 07:12:24,245 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-11-20 07:12:24,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:12:24,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-20 07:12:24,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:25,302 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2021-11-20 07:12:25,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:12:27,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490456399] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:12:27,460 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:12:27,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 36 [2021-11-20 07:12:27,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236220630] [2021-11-20 07:12:27,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:12:27,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-20 07:12:27,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:27,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-20 07:12:27,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2021-11-20 07:12:27,464 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) [2021-11-20 07:12:28,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:12:28,815 INFO L93 Difference]: Finished difference Result 491 states and 556 transitions. [2021-11-20 07:12:28,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 07:12:28,816 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 [2021-11-20 07:12:28,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:12:28,820 INFO L225 Difference]: With dead ends: 491 [2021-11-20 07:12:28,820 INFO L226 Difference]: Without dead ends: 488 [2021-11-20 07:12:28,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 144 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=334, Invalid=3206, Unknown=0, NotChecked=0, Total=3540 [2021-11-20 07:12:28,823 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 159 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:12:28,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 1364 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 07:12:28,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-20 07:12:28,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2021-11-20 07:12:28,849 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) [2021-11-20 07:12:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 551 transitions. [2021-11-20 07:12:28,852 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 551 transitions. Word has length 140 [2021-11-20 07:12:28,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:12:28,853 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 551 transitions. [2021-11-20 07:12:28,853 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) [2021-11-20 07:12:28,853 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 551 transitions. [2021-11-20 07:12:28,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-20 07:12:28,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:12:28,858 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] [2021-11-20 07:12:28,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:29,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-20 07:12:29,084 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:12:29,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:29,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1178697302, now seen corresponding path program 6 times [2021-11-20 07:12:29,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:29,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121119664] [2021-11-20 07:12:29,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:29,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:29,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:12:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:29,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 07:12:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:29,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:29,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:29,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:29,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:29,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:29,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:29,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:29,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:29,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:29,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 0 proven. 517 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-20 07:12:29,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:29,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121119664] [2021-11-20 07:12:29,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121119664] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:12:29,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933885224] [2021-11-20 07:12:29,977 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 07:12:29,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:29,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:29,978 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:12:29,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-20 07:12:30,183 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-11-20 07:12:30,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:12:30,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-20 07:12:30,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:31,576 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 0 proven. 517 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-20 07:12:31,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:12:34,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933885224] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:12:34,130 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:12:34,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 39 [2021-11-20 07:12:34,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020318875] [2021-11-20 07:12:34,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:12:34,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-20 07:12:34,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:34,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-20 07:12:34,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1594, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 07:12:34,133 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) [2021-11-20 07:12:35,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:12:35,559 INFO L93 Difference]: Finished difference Result 496 states and 561 transitions. [2021-11-20 07:12:35,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 07:12:35,560 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 [2021-11-20 07:12:35,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:12:35,563 INFO L225 Difference]: With dead ends: 496 [2021-11-20 07:12:35,563 INFO L226 Difference]: Without dead ends: 493 [2021-11-20 07:12:35,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 174 SyntacticMatches, 9 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=365, Invalid=3795, Unknown=0, NotChecked=0, Total=4160 [2021-11-20 07:12:35,567 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 174 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:12:35,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 1322 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 07:12:35,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-11-20 07:12:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 492. [2021-11-20 07:12:35,591 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) [2021-11-20 07:12:35,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 556 transitions. [2021-11-20 07:12:35,595 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 556 transitions. Word has length 166 [2021-11-20 07:12:35,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:12:35,596 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 556 transitions. [2021-11-20 07:12:35,596 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) [2021-11-20 07:12:35,596 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 556 transitions. [2021-11-20 07:12:35,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-20 07:12:35,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:12:35,600 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] [2021-11-20 07:12:35,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:35,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-20 07:12:35,813 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:12:35,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:35,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1895725022, now seen corresponding path program 7 times [2021-11-20 07:12:35,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:35,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954771660] [2021-11-20 07:12:35,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:35,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:35,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:12:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:35,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:12:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:36,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:36,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:36,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:36,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:36,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:36,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:36,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:36,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:36,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:36,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:36,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:36,810 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 0 proven. 433 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-20 07:12:36,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:36,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954771660] [2021-11-20 07:12:36,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954771660] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:12:36,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945713990] [2021-11-20 07:12:36,811 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 07:12:36,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:36,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:36,815 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:12:36,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-20 07:12:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:37,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-20 07:12:37,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 0 proven. 433 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-20 07:12:38,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:12:41,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945713990] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:12:41,315 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:12:41,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 42 [2021-11-20 07:12:41,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587097101] [2021-11-20 07:12:41,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:12:41,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-20 07:12:41,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:41,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-20 07:12:41,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1842, Unknown=0, NotChecked=0, Total=1980 [2021-11-20 07:12:41,318 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) [2021-11-20 07:12:43,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:12:43,050 INFO L93 Difference]: Finished difference Result 501 states and 566 transitions. [2021-11-20 07:12:43,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 07:12:43,051 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 [2021-11-20 07:12:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:12:43,055 INFO L225 Difference]: With dead ends: 501 [2021-11-20 07:12:43,055 INFO L226 Difference]: Without dead ends: 498 [2021-11-20 07:12:43,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 168 SyntacticMatches, 10 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=396, Invalid=4434, Unknown=0, NotChecked=0, Total=4830 [2021-11-20 07:12:43,059 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 187 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:12:43,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 1671 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 07:12:43,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-11-20 07:12:43,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 497. [2021-11-20 07:12:43,083 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) [2021-11-20 07:12:43,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 561 transitions. [2021-11-20 07:12:43,087 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 561 transitions. Word has length 164 [2021-11-20 07:12:43,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:12:43,087 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 561 transitions. [2021-11-20 07:12:43,088 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) [2021-11-20 07:12:43,088 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 561 transitions. [2021-11-20 07:12:43,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-20 07:12:43,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:12:43,092 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] [2021-11-20 07:12:43,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:43,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:43,312 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:12:43,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:43,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1407733590, now seen corresponding path program 8 times [2021-11-20 07:12:43,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:43,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742935396] [2021-11-20 07:12:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:43,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:43,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:12:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:43,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:12:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:43,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:43,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:43,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:43,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:43,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:43,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:44,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:44,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:44,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:44,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:44,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:44,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:44,502 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 0 proven. 502 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2021-11-20 07:12:44,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:44,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742935396] [2021-11-20 07:12:44,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742935396] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:12:44,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599176887] [2021-11-20 07:12:44,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:12:44,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:44,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:44,505 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:12:44,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-20 07:12:44,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:12:44,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:12:44,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-20 07:12:44,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:46,297 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 0 proven. 502 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2021-11-20 07:12:46,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:12:49,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599176887] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:12:49,883 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:12:49,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 45 [2021-11-20 07:12:49,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786831066] [2021-11-20 07:12:49,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:12:49,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-20 07:12:49,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:49,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-20 07:12:49,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2108, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 07:12:49,887 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) [2021-11-20 07:12:51,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:12:51,889 INFO L93 Difference]: Finished difference Result 506 states and 571 transitions. [2021-11-20 07:12:51,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 07:12:51,890 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 [2021-11-20 07:12:51,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:12:51,894 INFO L225 Difference]: With dead ends: 506 [2021-11-20 07:12:51,894 INFO L226 Difference]: Without dead ends: 503 [2021-11-20 07:12:51,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 180 SyntacticMatches, 11 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=427, Invalid=5123, Unknown=0, NotChecked=0, Total=5550 [2021-11-20 07:12:51,898 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 199 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:12:51,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 1897 Invalid, 2113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 07:12:51,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-11-20 07:12:51,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 502. [2021-11-20 07:12:51,929 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) [2021-11-20 07:12:51,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 566 transitions. [2021-11-20 07:12:51,932 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 566 transitions. Word has length 176 [2021-11-20 07:12:51,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:12:51,935 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 566 transitions. [2021-11-20 07:12:51,936 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) [2021-11-20 07:12:51,936 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 566 transitions. [2021-11-20 07:12:51,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-20 07:12:51,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:12:51,942 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] [2021-11-20 07:12:51,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-11-20 07:12:52,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-20 07:12:52,161 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:12:52,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:52,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1969189538, now seen corresponding path program 9 times [2021-11-20 07:12:52,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:52,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205234946] [2021-11-20 07:12:52,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:52,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:52,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:12:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:52,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:12:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:52,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:52,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:52,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:52,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:52,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:52,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:52,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:52,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:53,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:53,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:53,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:53,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:53,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2021-11-20 07:12:53,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:53,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205234946] [2021-11-20 07:12:53,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205234946] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:12:53,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124544594] [2021-11-20 07:12:53,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:12:53,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:12:53,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:53,435 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:12:53,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-20 07:12:53,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-20 07:12:53,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:12:53,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-20 07:12:53,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2021-11-20 07:12:55,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:12:59,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124544594] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:12:59,893 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:12:59,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 48 [2021-11-20 07:12:59,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401348190] [2021-11-20 07:12:59,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:12:59,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-20 07:12:59,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:59,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-20 07:12:59,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2392, Unknown=0, NotChecked=0, Total=2550 [2021-11-20 07:12:59,896 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) [2021-11-20 07:13:02,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:02,272 INFO L93 Difference]: Finished difference Result 511 states and 576 transitions. [2021-11-20 07:13:02,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-20 07:13:02,273 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 [2021-11-20 07:13:02,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:13:02,276 INFO L225 Difference]: With dead ends: 511 [2021-11-20 07:13:02,276 INFO L226 Difference]: Without dead ends: 508 [2021-11-20 07:13:02,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 192 SyntacticMatches, 12 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=458, Invalid=5862, Unknown=0, NotChecked=0, Total=6320 [2021-11-20 07:13:02,280 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 213 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:13:02,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 2153 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 07:13:02,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-20 07:13:02,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2021-11-20 07:13:02,306 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) [2021-11-20 07:13:02,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 571 transitions. [2021-11-20 07:13:02,310 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 571 transitions. Word has length 188 [2021-11-20 07:13:02,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:13:02,310 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 571 transitions. [2021-11-20 07:13:02,311 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) [2021-11-20 07:13:02,311 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 571 transitions. [2021-11-20 07:13:02,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-20 07:13:02,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:02,316 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] [2021-11-20 07:13:02,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-20 07:13:02,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:13:02,523 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:13:02,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:02,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1413173590, now seen corresponding path program 10 times [2021-11-20 07:13:02,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:02,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294418686] [2021-11-20 07:13:02,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:02,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:02,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:13:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:02,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 07:13:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:02,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:02,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:02,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:03,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:03,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:03,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:03,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:03,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:03,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:03,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:03,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:03,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:03,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 0 proven. 859 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2021-11-20 07:13:04,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:04,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294418686] [2021-11-20 07:13:04,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294418686] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:13:04,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75892800] [2021-11-20 07:13:04,012 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 07:13:04,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:13:04,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:13:04,013 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:13:04,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-20 07:13:04,417 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 07:13:04,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:13:04,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-20 07:13:04,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:13:06,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 0 proven. 859 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2021-11-20 07:13:06,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:13:23,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75892800] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:13:23,835 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:13:23,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 51 [2021-11-20 07:13:23,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533756096] [2021-11-20 07:13:23,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:13:23,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-20 07:13:23,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:13:23,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-20 07:13:23,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=2938, Unknown=2, NotChecked=0, Total=3192 [2021-11-20 07:13:23,838 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) [2021-11-20 07:13:26,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:26,456 INFO L93 Difference]: Finished difference Result 516 states and 581 transitions. [2021-11-20 07:13:26,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 07:13:26,459 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 [2021-11-20 07:13:26,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:13:26,462 INFO L225 Difference]: With dead ends: 516 [2021-11-20 07:13:26,463 INFO L226 Difference]: Without dead ends: 513 [2021-11-20 07:13:26,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 225 SyntacticMatches, 13 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=634, Invalid=7020, Unknown=2, NotChecked=0, Total=7656 [2021-11-20 07:13:26,467 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 226 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:13:26,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 2540 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 07:13:26,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-11-20 07:13:26,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 512. [2021-11-20 07:13:26,491 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) [2021-11-20 07:13:26,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 576 transitions. [2021-11-20 07:13:26,494 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 576 transitions. Word has length 214 [2021-11-20 07:13:26,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:13:26,495 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 576 transitions. [2021-11-20 07:13:26,495 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) [2021-11-20 07:13:26,495 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 576 transitions. [2021-11-20 07:13:26,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-20 07:13:26,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:26,500 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] [2021-11-20 07:13:26,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-20 07:13:26,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-20 07:13:26,717 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:13:26,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:26,717 INFO L85 PathProgramCache]: Analyzing trace with hash 665208226, now seen corresponding path program 11 times [2021-11-20 07:13:26,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:26,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394684832] [2021-11-20 07:13:26,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:26,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:26,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:13:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:26,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 07:13:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:26,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:27,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:27,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:27,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:27,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:27,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:27,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:27,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:27,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:27,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:27,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:27,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:28,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:28,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:28,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:13:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 957 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2021-11-20 07:13:28,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:28,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394684832] [2021-11-20 07:13:28,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394684832] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:13:28,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137219156] [2021-11-20 07:13:28,314 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 07:13:28,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:13:28,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:13:28,316 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:13:28,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-20 07:13:28,866 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-11-20 07:13:28,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:13:28,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-20 07:13:28,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:13:30,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 957 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2021-11-20 07:13:30,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:13:58,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137219156] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:13:58,125 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:13:58,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 54 [2021-11-20 07:13:58,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169119703] [2021-11-20 07:13:58,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:13:58,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-11-20 07:13:58,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:13:58,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-11-20 07:13:58,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=3267, Unknown=6, NotChecked=0, Total=3540 [2021-11-20 07:13:58,129 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) [2021-11-20 07:14:01,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:14:01,007 INFO L93 Difference]: Finished difference Result 521 states and 586 transitions. [2021-11-20 07:14:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 07:14:01,007 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 [2021-11-20 07:14:01,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:14:01,011 INFO L225 Difference]: With dead ends: 521 [2021-11-20 07:14:01,011 INFO L226 Difference]: Without dead ends: 518 [2021-11-20 07:14:01,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 237 SyntacticMatches, 14 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=674, Invalid=7876, Unknown=6, NotChecked=0, Total=8556 [2021-11-20 07:14:01,014 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 238 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:14:01,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 2765 Invalid, 2936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2789 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 07:14:01,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-11-20 07:14:01,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 517. [2021-11-20 07:14:01,039 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) [2021-11-20 07:14:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 581 transitions. [2021-11-20 07:14:01,043 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 581 transitions. Word has length 226 [2021-11-20 07:14:01,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:14:01,044 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 581 transitions. [2021-11-20 07:14:01,045 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) [2021-11-20 07:14:01,045 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 581 transitions. [2021-11-20 07:14:01,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-20 07:14:01,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:14:01,051 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] [2021-11-20 07:14:01,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:01,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-20 07:14:01,264 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:14:01,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:01,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2113299030, now seen corresponding path program 12 times [2021-11-20 07:14:01,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:01,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4188814] [2021-11-20 07:14:01,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:01,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:01,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:14:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:01,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:14:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:01,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:01,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:01,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:01,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:01,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:01,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:02,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:02,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:02,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:02,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:02,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:02,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:02,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:02,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:02,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:02,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:03,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1684 backedges. 0 proven. 828 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2021-11-20 07:14:03,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:14:03,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4188814] [2021-11-20 07:14:03,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4188814] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:14:03,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530807008] [2021-11-20 07:14:03,011 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 07:14:03,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:14:03,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:03,027 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:14:03,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-20 07:14:03,604 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-11-20 07:14:03,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:14:03,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-20 07:14:03,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1684 backedges. 0 proven. 828 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2021-11-20 07:14:05,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:14:13,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530807008] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:14:13,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:14:13,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 57 [2021-11-20 07:14:13,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117712613] [2021-11-20 07:14:13,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:14:13,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-20 07:14:13,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:14:13,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-20 07:14:13,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3352, Unknown=0, NotChecked=0, Total=3540 [2021-11-20 07:14:13,343 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) [2021-11-20 07:14:16,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:14:16,564 INFO L93 Difference]: Finished difference Result 526 states and 591 transitions. [2021-11-20 07:14:16,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-20 07:14:16,565 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 [2021-11-20 07:14:16,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:14:16,567 INFO L225 Difference]: With dead ends: 526 [2021-11-20 07:14:16,567 INFO L226 Difference]: Without dead ends: 523 [2021-11-20 07:14:16,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 228 SyntacticMatches, 15 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1577 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=551, Invalid=8379, Unknown=0, NotChecked=0, Total=8930 [2021-11-20 07:14:16,569 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 251 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 3182 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:14:16,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 2175 Invalid, 3339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 3182 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 07:14:16,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-11-20 07:14:16,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 522. [2021-11-20 07:14:16,593 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) [2021-11-20 07:14:16,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 586 transitions. [2021-11-20 07:14:16,597 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 586 transitions. Word has length 224 [2021-11-20 07:14:16,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:14:16,598 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 586 transitions. [2021-11-20 07:14:16,598 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) [2021-11-20 07:14:16,598 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 586 transitions. [2021-11-20 07:14:16,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-20 07:14:16,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:14:16,602 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] [2021-11-20 07:14:16,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:16,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-20 07:14:16,828 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:14:16,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:16,828 INFO L85 PathProgramCache]: Analyzing trace with hash -89034718, now seen corresponding path program 13 times [2021-11-20 07:14:16,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:16,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338920595] [2021-11-20 07:14:16,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:16,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:16,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:14:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:16,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 07:14:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:17,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:17,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:17,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:17,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:17,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:17,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:17,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:17,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:17,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:17,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:18,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:18,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:18,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:18,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:18,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:18,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:18,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2158 backedges. 0 proven. 1168 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-20 07:14:18,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:14:18,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338920595] [2021-11-20 07:14:18,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338920595] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:14:18,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559619407] [2021-11-20 07:14:18,818 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 07:14:18,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:14:18,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:18,822 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:14:18,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-20 07:14:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:19,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-20 07:14:19,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2158 backedges. 0 proven. 1168 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-20 07:14:21,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:14:30,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559619407] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:14:30,271 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:14:30,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 60 [2021-11-20 07:14:30,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641595853] [2021-11-20 07:14:30,272 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:14:30,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-11-20 07:14:30,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:14:30,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-11-20 07:14:30,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3708, Unknown=0, NotChecked=0, Total=3906 [2021-11-20 07:14:30,273 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) [2021-11-20 07:14:33,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:14:33,729 INFO L93 Difference]: Finished difference Result 531 states and 596 transitions. [2021-11-20 07:14:33,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-20 07:14:33,729 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 [2021-11-20 07:14:33,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:14:33,732 INFO L225 Difference]: With dead ends: 531 [2021-11-20 07:14:33,732 INFO L226 Difference]: Without dead ends: 528 [2021-11-20 07:14:33,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 258 SyntacticMatches, 16 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=582, Invalid=9318, Unknown=0, NotChecked=0, Total=9900 [2021-11-20 07:14:33,734 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 203 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 3481 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:14:33,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 2818 Invalid, 3609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 3481 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 07:14:33,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-20 07:14:33,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 527. [2021-11-20 07:14:33,758 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) [2021-11-20 07:14:33,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 591 transitions. [2021-11-20 07:14:33,761 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 591 transitions. Word has length 250 [2021-11-20 07:14:33,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:14:33,762 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 591 transitions. [2021-11-20 07:14:33,763 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) [2021-11-20 07:14:33,763 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 591 transitions. [2021-11-20 07:14:33,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-20 07:14:33,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:14:33,767 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] [2021-11-20 07:14:33,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:33,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-20 07:14:33,996 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:14:33,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:33,996 INFO L85 PathProgramCache]: Analyzing trace with hash 755475542, now seen corresponding path program 14 times [2021-11-20 07:14:33,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:33,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828420135] [2021-11-20 07:14:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:33,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:34,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:14:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:34,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 07:14:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:34,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:34,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:34,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:34,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:34,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:34,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:34,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:35,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:35,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:35,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:35,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:35,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:35,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:35,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:35,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:35,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:36,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:36,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:36,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2391 backedges. 0 proven. 1281 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2021-11-20 07:14:36,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:14:36,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828420135] [2021-11-20 07:14:36,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828420135] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:14:36,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818275041] [2021-11-20 07:14:36,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:14:36,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:14:36,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:36,171 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:14:36,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-20 07:14:36,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:14:36,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:14:36,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-20 07:14:36,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:39,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2391 backedges. 0 proven. 1281 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2021-11-20 07:14:39,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:14:49,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818275041] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:14:49,374 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:14:49,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 63 [2021-11-20 07:14:49,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391824141] [2021-11-20 07:14:49,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:14:49,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-20 07:14:49,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:14:49,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-20 07:14:49,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=4082, Unknown=0, NotChecked=0, Total=4290 [2021-11-20 07:14:49,377 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) [2021-11-20 07:14:53,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:14:53,238 INFO L93 Difference]: Finished difference Result 536 states and 601 transitions. [2021-11-20 07:14:53,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-20 07:14:53,239 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 [2021-11-20 07:14:53,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:14:53,242 INFO L225 Difference]: With dead ends: 536 [2021-11-20 07:14:53,243 INFO L226 Difference]: Without dead ends: 533 [2021-11-20 07:14:53,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 270 SyntacticMatches, 17 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=613, Invalid=10307, Unknown=0, NotChecked=0, Total=10920 [2021-11-20 07:14:53,246 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 215 mSDsluCounter, 2811 mSDsCounter, 0 mSdLazyCounter, 3803 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:14:53,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 2888 Invalid, 3938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 3803 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 07:14:53,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-11-20 07:14:53,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 532. [2021-11-20 07:14:53,273 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) [2021-11-20 07:14:53,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 596 transitions. [2021-11-20 07:14:53,276 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 596 transitions. Word has length 262 [2021-11-20 07:14:53,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:14:53,277 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 596 transitions. [2021-11-20 07:14:53,278 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) [2021-11-20 07:14:53,278 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 596 transitions. [2021-11-20 07:14:53,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-11-20 07:14:53,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:14:53,283 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] [2021-11-20 07:14:53,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:53,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:14:53,502 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:14:53,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:53,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2082304546, now seen corresponding path program 15 times [2021-11-20 07:14:53,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:53,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576539518] [2021-11-20 07:14:53,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:53,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:53,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:14:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:53,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:14:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:53,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:53,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:53,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:54,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:54,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:54,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:54,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:54,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:54,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:54,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:54,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:54,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:54,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:55,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:55,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:55,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:55,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:55,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:55,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:14:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:55,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2341 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2021-11-20 07:14:55,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:14:55,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576539518] [2021-11-20 07:14:55,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576539518] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:14:55,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325764977] [2021-11-20 07:14:55,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:14:55,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:14:55,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:55,692 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:14:55,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-20 07:14:56,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-11-20 07:14:56,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:14:56,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-20 07:14:56,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2341 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2021-11-20 07:14:59,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:15:10,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325764977] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:15:10,867 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:15:10,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 66 [2021-11-20 07:15:10,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467216167] [2021-11-20 07:15:10,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:15:10,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-11-20 07:15:10,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:15:10,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-11-20 07:15:10,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=4474, Unknown=0, NotChecked=0, Total=4692 [2021-11-20 07:15:10,871 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) [2021-11-20 07:15:15,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:15:15,146 INFO L93 Difference]: Finished difference Result 541 states and 606 transitions. [2021-11-20 07:15:15,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-20 07:15:15,147 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 [2021-11-20 07:15:15,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:15:15,150 INFO L225 Difference]: With dead ends: 541 [2021-11-20 07:15:15,150 INFO L226 Difference]: Without dead ends: 538 [2021-11-20 07:15:15,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 264 SyntacticMatches, 18 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2156 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=644, Invalid=11346, Unknown=0, NotChecked=0, Total=11990 [2021-11-20 07:15:15,152 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 224 mSDsluCounter, 3681 mSDsCounter, 0 mSdLazyCounter, 3957 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:15:15,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 3759 Invalid, 4100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 3957 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 07:15:15,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-11-20 07:15:15,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 537. [2021-11-20 07:15:15,177 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) [2021-11-20 07:15:15,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 601 transitions. [2021-11-20 07:15:15,180 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 601 transitions. Word has length 260 [2021-11-20 07:15:15,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:15:15,181 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 601 transitions. [2021-11-20 07:15:15,182 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) [2021-11-20 07:15:15,182 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 601 transitions. [2021-11-20 07:15:15,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-11-20 07:15:15,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:15:15,186 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] [2021-11-20 07:15:15,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-20 07:15:15,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:15:15,387 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:15:15,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:15:15,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1640545750, now seen corresponding path program 16 times [2021-11-20 07:15:15,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:15:15,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857723252] [2021-11-20 07:15:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:15:15,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:15:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:15,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:15:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:15,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 07:15:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:15,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:15,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:15,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:16,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:16,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:16,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:16,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:16,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:16,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:16,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:16,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:16,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:16,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:17,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:17,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:17,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:17,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:17,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:17,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:17,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2893 backedges. 0 proven. 1522 refuted. 0 times theorem prover too weak. 1371 trivial. 0 not checked. [2021-11-20 07:15:17,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:15:17,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857723252] [2021-11-20 07:15:17,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857723252] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:15:17,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989903737] [2021-11-20 07:15:17,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 07:15:17,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:15:17,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:15:17,788 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:15:17,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-20 07:15:18,686 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 07:15:18,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:15:18,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 90 conjunts are in the unsatisfiable core [2021-11-20 07:15:18,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:15:21,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2893 backedges. 0 proven. 1522 refuted. 0 times theorem prover too weak. 1371 trivial. 0 not checked. [2021-11-20 07:15:21,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:15:34,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989903737] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:15:34,963 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:15:34,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 69 [2021-11-20 07:15:34,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137646285] [2021-11-20 07:15:34,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:15:34,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-11-20 07:15:34,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:15:34,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-11-20 07:15:34,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=4884, Unknown=0, NotChecked=0, Total=5112 [2021-11-20 07:15:34,966 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) [2021-11-20 07:15:39,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:15:39,580 INFO L93 Difference]: Finished difference Result 546 states and 611 transitions. [2021-11-20 07:15:39,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-20 07:15:39,580 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 [2021-11-20 07:15:39,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:15:39,583 INFO L225 Difference]: With dead ends: 546 [2021-11-20 07:15:39,583 INFO L226 Difference]: Without dead ends: 543 [2021-11-20 07:15:39,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 294 SyntacticMatches, 19 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2369 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=675, Invalid=12435, Unknown=0, NotChecked=0, Total=13110 [2021-11-20 07:15:39,585 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 234 mSDsluCounter, 3838 mSDsCounter, 0 mSdLazyCounter, 4648 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:15:39,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 3917 Invalid, 4797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 4648 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 07:15:39,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-11-20 07:15:39,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 542. [2021-11-20 07:15:39,641 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) [2021-11-20 07:15:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 606 transitions. [2021-11-20 07:15:39,644 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 606 transitions. Word has length 286 [2021-11-20 07:15:39,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:15:39,645 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 606 transitions. [2021-11-20 07:15:39,646 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) [2021-11-20 07:15:39,646 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 606 transitions. [2021-11-20 07:15:39,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-11-20 07:15:39,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:15:39,651 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] [2021-11-20 07:15:39,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-20 07:15:39,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:15:39,868 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:15:39,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:15:39,868 INFO L85 PathProgramCache]: Analyzing trace with hash -134093534, now seen corresponding path program 17 times [2021-11-20 07:15:39,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:15:39,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741537267] [2021-11-20 07:15:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:15:39,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:15:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:40,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:15:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:40,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 07:15:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:40,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:40,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:40,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:40,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:40,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:40,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:40,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:41,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:41,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:41,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:41,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:41,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:41,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:41,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:41,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:41,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:42,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:42,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:42,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:42,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:42,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:15:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:15:42,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3162 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2021-11-20 07:15:42,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:15:42,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741537267] [2021-11-20 07:15:42,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741537267] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:15:42,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808705465] [2021-11-20 07:15:42,618 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 07:15:42,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:15:42,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:15:42,619 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:15:42,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-20 07:15:43,603 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-11-20 07:15:43,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:15:43,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 94 conjunts are in the unsatisfiable core [2021-11-20 07:15:43,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:15:46,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3162 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2021-11-20 07:15:46,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:16:01,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808705465] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:16:01,763 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:16:01,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 72 [2021-11-20 07:16:01,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965395323] [2021-11-20 07:16:01,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:16:01,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-11-20 07:16:01,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:16:01,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-11-20 07:16:01,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=5312, Unknown=0, NotChecked=0, Total=5550 [2021-11-20 07:16:01,766 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) [2021-11-20 07:16:06,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:16:06,756 INFO L93 Difference]: Finished difference Result 551 states and 616 transitions. [2021-11-20 07:16:06,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-20 07:16:06,756 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 [2021-11-20 07:16:06,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:16:06,759 INFO L225 Difference]: With dead ends: 551 [2021-11-20 07:16:06,759 INFO L226 Difference]: Without dead ends: 548 [2021-11-20 07:16:06,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 306 SyntacticMatches, 20 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2592 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=706, Invalid=13574, Unknown=0, NotChecked=0, Total=14280 [2021-11-20 07:16:06,761 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 316 mSDsluCounter, 2917 mSDsCounter, 0 mSdLazyCounter, 4914 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:16:06,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2997 Invalid, 5115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 4914 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 07:16:06,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-11-20 07:16:06,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 547. [2021-11-20 07:16:06,787 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) [2021-11-20 07:16:06,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 611 transitions. [2021-11-20 07:16:06,791 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 611 transitions. Word has length 298 [2021-11-20 07:16:06,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:16:06,792 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 611 transitions. [2021-11-20 07:16:06,792 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) [2021-11-20 07:16:06,793 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 611 transitions. [2021-11-20 07:16:06,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-20 07:16:06,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:16:06,797 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] [2021-11-20 07:16:06,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-20 07:16:07,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-20 07:16:07,024 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:16:07,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:16:07,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1392103722, now seen corresponding path program 18 times [2021-11-20 07:16:07,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:16:07,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260940531] [2021-11-20 07:16:07,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:16:07,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:16:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:07,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:16:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:07,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:16:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:07,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:07,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:07,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:07,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:07,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:07,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:08,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:08,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:08,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:08,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:08,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:08,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:08,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:08,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:09,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:09,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:09,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:09,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:09,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:09,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:09,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:09,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:09,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3106 backedges. 0 proven. 1467 refuted. 0 times theorem prover too weak. 1639 trivial. 0 not checked. [2021-11-20 07:16:09,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:16:09,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260940531] [2021-11-20 07:16:09,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260940531] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:16:09,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182985476] [2021-11-20 07:16:09,811 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 07:16:09,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:16:09,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:16:09,818 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:16:09,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-20 07:16:11,012 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2021-11-20 07:16:11,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:16:11,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 94 conjunts are in the unsatisfiable core [2021-11-20 07:16:11,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:16:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3106 backedges. 0 proven. 1467 refuted. 0 times theorem prover too weak. 1639 trivial. 0 not checked. [2021-11-20 07:16:14,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:16:31,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182985476] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:16:31,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:16:31,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 75 [2021-11-20 07:16:31,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373771353] [2021-11-20 07:16:31,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:16:31,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-11-20 07:16:31,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:16:31,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-11-20 07:16:31,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=5758, Unknown=0, NotChecked=0, Total=6006 [2021-11-20 07:16:31,364 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) [2021-11-20 07:16:36,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:16:36,810 INFO L93 Difference]: Finished difference Result 556 states and 621 transitions. [2021-11-20 07:16:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-20 07:16:36,811 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 [2021-11-20 07:16:36,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:16:36,814 INFO L225 Difference]: With dead ends: 556 [2021-11-20 07:16:36,814 INFO L226 Difference]: Without dead ends: 553 [2021-11-20 07:16:36,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 300 SyntacticMatches, 21 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2825 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=737, Invalid=14763, Unknown=0, NotChecked=0, Total=15500 [2021-11-20 07:16:36,816 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 328 mSDsluCounter, 3636 mSDsCounter, 0 mSdLazyCounter, 5456 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 2.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:16:36,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 3717 Invalid, 5667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 5456 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-20 07:16:36,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-11-20 07:16:36,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 552. [2021-11-20 07:16:36,840 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) [2021-11-20 07:16:36,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 616 transitions. [2021-11-20 07:16:36,843 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 616 transitions. Word has length 296 [2021-11-20 07:16:36,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:16:36,844 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 616 transitions. [2021-11-20 07:16:36,844 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) [2021-11-20 07:16:36,844 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 616 transitions. [2021-11-20 07:16:36,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-11-20 07:16:36,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:16:36,849 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] [2021-11-20 07:16:36,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-20 07:16:37,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-20 07:16:37,064 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:16:37,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:16:37,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1692424414, now seen corresponding path program 19 times [2021-11-20 07:16:37,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:16:37,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001349624] [2021-11-20 07:16:37,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:16:37,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:16:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:37,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:16:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:37,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:16:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:37,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:37,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:37,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:37,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:37,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:38,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:38,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:38,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:38,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:38,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:38,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:38,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:38,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:38,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:38,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:39,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:39,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:39,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:39,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:39,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:39,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:39,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:39,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:16:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:39,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3385 backedges. 0 proven. 1591 refuted. 0 times theorem prover too weak. 1794 trivial. 0 not checked. [2021-11-20 07:16:39,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:16:39,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001349624] [2021-11-20 07:16:39,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001349624] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:16:39,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155264040] [2021-11-20 07:16:39,854 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 07:16:39,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:16:39,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:16:39,854 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:16:39,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-20 07:16:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:41,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 98 conjunts are in the unsatisfiable core [2021-11-20 07:16:41,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:16:44,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3385 backedges. 0 proven. 1591 refuted. 0 times theorem prover too weak. 1794 trivial. 0 not checked. [2021-11-20 07:16:44,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:03,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155264040] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:17:03,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:17:03,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 78 [2021-11-20 07:17:03,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088177616] [2021-11-20 07:17:03,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:17:03,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-11-20 07:17:03,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:17:03,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-11-20 07:17:03,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=6222, Unknown=0, NotChecked=0, Total=6480 [2021-11-20 07:17:03,212 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) [2021-11-20 07:17:09,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:09,284 INFO L93 Difference]: Finished difference Result 561 states and 626 transitions. [2021-11-20 07:17:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-20 07:17:09,284 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 [2021-11-20 07:17:09,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:09,288 INFO L225 Difference]: With dead ends: 561 [2021-11-20 07:17:09,288 INFO L226 Difference]: Without dead ends: 558 [2021-11-20 07:17:09,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 312 SyntacticMatches, 22 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=768, Invalid=16002, Unknown=0, NotChecked=0, Total=16770 [2021-11-20 07:17:09,292 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 265 mSDsluCounter, 4481 mSDsCounter, 0 mSdLazyCounter, 6075 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s 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, 3.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:09,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 4563 Invalid, 6246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 6075 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-20 07:17:09,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-11-20 07:17:09,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 557. [2021-11-20 07:17:09,314 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) [2021-11-20 07:17:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 621 transitions. [2021-11-20 07:17:09,316 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 621 transitions. Word has length 308 [2021-11-20 07:17:09,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:09,317 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 621 transitions. [2021-11-20 07:17:09,317 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) [2021-11-20 07:17:09,317 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 621 transitions. [2021-11-20 07:17:09,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-11-20 07:17:09,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:09,321 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] [2021-11-20 07:17:09,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-11-20 07:17:09,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-20 07:17:09,565 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:17:09,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:09,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1259730858, now seen corresponding path program 20 times [2021-11-20 07:17:09,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:17:09,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919583002] [2021-11-20 07:17:09,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:09,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:17:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:09,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:17:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:09,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:17:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:09,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:09,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:10,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:10,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:10,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:10,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:10,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:10,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:10,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:10,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:10,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:11,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:11,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:11,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:11,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:11,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:11,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:11,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:11,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:11,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:11,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:11,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:12,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:12,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:12,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3676 backedges. 0 proven. 1720 refuted. 0 times theorem prover too weak. 1956 trivial. 0 not checked. [2021-11-20 07:17:12,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:17:12,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919583002] [2021-11-20 07:17:12,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919583002] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:17:12,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661208860] [2021-11-20 07:17:12,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:17:12,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:17:12,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:17:12,186 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:17:12,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-20 07:17:13,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:17:13,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:17:13,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 102 conjunts are in the unsatisfiable core [2021-11-20 07:17:13,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:17,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3676 backedges. 0 proven. 1720 refuted. 0 times theorem prover too weak. 1956 trivial. 0 not checked. [2021-11-20 07:17:17,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:39,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661208860] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:17:39,000 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:17:39,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 81 [2021-11-20 07:17:39,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376032291] [2021-11-20 07:17:39,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:17:39,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-11-20 07:17:39,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:17:39,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-11-20 07:17:39,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=6704, Unknown=0, NotChecked=0, Total=6972 [2021-11-20 07:17:39,004 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) [2021-11-20 07:17:45,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:45,500 INFO L93 Difference]: Finished difference Result 566 states and 631 transitions. [2021-11-20 07:17:45,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-20 07:17:45,500 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 [2021-11-20 07:17:45,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:45,503 INFO L225 Difference]: With dead ends: 566 [2021-11-20 07:17:45,503 INFO L226 Difference]: Without dead ends: 563 [2021-11-20 07:17:45,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 324 SyntacticMatches, 23 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3321 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=799, Invalid=17291, Unknown=0, NotChecked=0, Total=18090 [2021-11-20 07:17:45,505 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 274 mSDsluCounter, 4690 mSDsCounter, 0 mSdLazyCounter, 6332 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s 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, 3.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:45,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 4773 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 6332 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-20 07:17:45,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-11-20 07:17:45,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 562. [2021-11-20 07:17:45,528 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) [2021-11-20 07:17:45,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 626 transitions. [2021-11-20 07:17:45,530 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 626 transitions. Word has length 320 [2021-11-20 07:17:45,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:45,531 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 626 transitions. [2021-11-20 07:17:45,531 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) [2021-11-20 07:17:45,531 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 626 transitions. [2021-11-20 07:17:45,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-11-20 07:17:45,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:45,536 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] [2021-11-20 07:17:45,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:45,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:17:45,757 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:17:45,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:45,757 INFO L85 PathProgramCache]: Analyzing trace with hash 918147490, now seen corresponding path program 21 times [2021-11-20 07:17:45,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:17:45,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578894629] [2021-11-20 07:17:45,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:45,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:17:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:45,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:17:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:45,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:17:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:46,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:46,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:46,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:46,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:46,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:46,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:46,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:46,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:46,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:47,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:47,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:47,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:47,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:47,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:47,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:47,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:47,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:47,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:48,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:48,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:48,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:48,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:48,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:48,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:48,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:17:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3979 backedges. 0 proven. 1854 refuted. 0 times theorem prover too weak. 2125 trivial. 0 not checked. [2021-11-20 07:17:48,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:17:48,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578894629] [2021-11-20 07:17:48,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578894629] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:17:48,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688641651] [2021-11-20 07:17:48,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:17:48,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:17:48,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:17:48,792 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:17:48,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-20 07:17:50,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2021-11-20 07:17:50,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:17:50,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 106 conjunts are in the unsatisfiable core [2021-11-20 07:17:50,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:54,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3979 backedges. 0 proven. 1854 refuted. 0 times theorem prover too weak. 2125 trivial. 0 not checked. [2021-11-20 07:17:54,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:18:18,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688641651] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:18:18,712 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:18:18,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 84 [2021-11-20 07:18:18,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374535739] [2021-11-20 07:18:18,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:18:18,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-11-20 07:18:18,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:18:18,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-11-20 07:18:18,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=7204, Unknown=0, NotChecked=0, Total=7482 [2021-11-20 07:18:18,716 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) [2021-11-20 07:18:26,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:18:26,081 INFO L93 Difference]: Finished difference Result 571 states and 636 transitions. [2021-11-20 07:18:26,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-20 07:18:26,081 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 [2021-11-20 07:18:26,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:18:26,084 INFO L225 Difference]: With dead ends: 571 [2021-11-20 07:18:26,084 INFO L226 Difference]: Without dead ends: 568 [2021-11-20 07:18:26,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 336 SyntacticMatches, 24 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3584 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=830, Invalid=18630, Unknown=0, NotChecked=0, Total=19460 [2021-11-20 07:18:26,090 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 369 mSDsluCounter, 4655 mSDsCounter, 0 mSdLazyCounter, 7393 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s 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, 4.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:18:26,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 4739 Invalid, 7631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 7393 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-20 07:18:26,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-11-20 07:18:26,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 567. [2021-11-20 07:18:26,117 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) [2021-11-20 07:18:26,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 631 transitions. [2021-11-20 07:18:26,120 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 631 transitions. Word has length 332 [2021-11-20 07:18:26,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:18:26,121 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 631 transitions. [2021-11-20 07:18:26,121 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) [2021-11-20 07:18:26,121 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 631 transitions. [2021-11-20 07:18:26,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-11-20 07:18:26,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:18:26,126 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] [2021-11-20 07:18:26,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-20 07:18:26,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:18:26,340 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:18:26,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:18:26,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1218085334, now seen corresponding path program 22 times [2021-11-20 07:18:26,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:18:26,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722824721] [2021-11-20 07:18:26,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:18:26,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:18:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:26,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:18:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:26,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:18:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:26,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:26,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:26,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:26,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:26,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:27,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:27,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:27,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:27,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:27,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:27,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:27,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:28,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:28,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:28,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:28,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:28,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:28,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:28,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:28,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:28,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:28,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:29,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:29,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:29,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:29,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:18:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:29,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 0 proven. 1993 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2021-11-20 07:18:29,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:18:29,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722824721] [2021-11-20 07:18:29,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722824721] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:18:29,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760463383] [2021-11-20 07:18:29,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 07:18:29,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:18:29,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:18:29,458 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:18:29,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-20 07:18:31,119 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 07:18:31,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:18:31,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 110 conjunts are in the unsatisfiable core [2021-11-20 07:18:31,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:18:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 0 proven. 1993 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2021-11-20 07:18:35,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:19:02,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760463383] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:19:02,441 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:19:02,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 87 [2021-11-20 07:19:02,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901598191] [2021-11-20 07:19:02,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:19:02,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-11-20 07:19:02,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:19:02,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-11-20 07:19:02,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=7722, Unknown=0, NotChecked=0, Total=8010 [2021-11-20 07:19:02,445 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) [2021-11-20 07:19:10,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:19:10,096 INFO L93 Difference]: Finished difference Result 576 states and 641 transitions. [2021-11-20 07:19:10,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-20 07:19:10,097 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 [2021-11-20 07:19:10,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:19:10,100 INFO L225 Difference]: With dead ends: 576 [2021-11-20 07:19:10,100 INFO L226 Difference]: Without dead ends: 573 [2021-11-20 07:19:10,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 348 SyntacticMatches, 25 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3857 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=861, Invalid=20019, Unknown=0, NotChecked=0, Total=20880 [2021-11-20 07:19:10,103 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 295 mSDsluCounter, 5606 mSDsCounter, 0 mSdLazyCounter, 7500 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s 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, 4.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:19:10,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 5691 Invalid, 7692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 7500 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-20 07:19:10,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-11-20 07:19:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 572. [2021-11-20 07:19:10,129 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) [2021-11-20 07:19:10,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 636 transitions. [2021-11-20 07:19:10,131 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 636 transitions. Word has length 344 [2021-11-20 07:19:10,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:19:10,132 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 636 transitions. [2021-11-20 07:19:10,133 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) [2021-11-20 07:19:10,133 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 636 transitions. [2021-11-20 07:19:10,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-11-20 07:19:10,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:19:10,138 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] [2021-11-20 07:19:10,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-20 07:19:10,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:19:10,356 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:19:10,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:10,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2104450082, now seen corresponding path program 23 times [2021-11-20 07:19:10,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:10,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871635304] [2021-11-20 07:19:10,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:10,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:10,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:19:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:10,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:19:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:10,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:10,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:10,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:11,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:11,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:11,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:11,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:11,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:11,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:11,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:11,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:12,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:12,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:12,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:12,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:12,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:12,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:12,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:12,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:13,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:13,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:13,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:13,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:13,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:13,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:13,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4621 backedges. 0 proven. 2137 refuted. 0 times theorem prover too weak. 2484 trivial. 0 not checked. [2021-11-20 07:19:13,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:19:13,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871635304] [2021-11-20 07:19:13,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871635304] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:19:13,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795795183] [2021-11-20 07:19:13,744 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 07:19:13,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:19:13,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:19:13,764 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:19:13,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-20 07:19:15,927 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2021-11-20 07:19:15,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:19:15,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 114 conjunts are in the unsatisfiable core [2021-11-20 07:19:15,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:19:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4621 backedges. 0 proven. 2137 refuted. 0 times theorem prover too weak. 2484 trivial. 0 not checked. [2021-11-20 07:19:20,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:19:50,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795795183] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:19:50,026 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:19:50,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 90 [2021-11-20 07:19:50,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380158281] [2021-11-20 07:19:50,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:19:50,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-11-20 07:19:50,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:19:50,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-11-20 07:19:50,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=8258, Unknown=0, NotChecked=0, Total=8556 [2021-11-20 07:19:50,029 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) [2021-11-20 07:19:58,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:19:58,474 INFO L93 Difference]: Finished difference Result 581 states and 646 transitions. [2021-11-20 07:19:58,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-20 07:19:58,475 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 [2021-11-20 07:19:58,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:19:58,477 INFO L225 Difference]: With dead ends: 581 [2021-11-20 07:19:58,478 INFO L226 Difference]: Without dead ends: 578 [2021-11-20 07:19:58,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 360 SyntacticMatches, 26 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4140 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=892, Invalid=21458, Unknown=0, NotChecked=0, Total=22350 [2021-11-20 07:19:58,480 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 303 mSDsluCounter, 6094 mSDsCounter, 0 mSdLazyCounter, 8587 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s 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, 4.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:19:58,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 6180 Invalid, 8786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 8587 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-20 07:19:58,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-11-20 07:19:58,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 577. [2021-11-20 07:19:58,504 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) [2021-11-20 07:19:58,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 641 transitions. [2021-11-20 07:19:58,507 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 641 transitions. Word has length 356 [2021-11-20 07:19:58,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:19:58,508 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 641 transitions. [2021-11-20 07:19:58,508 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) [2021-11-20 07:19:58,508 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 641 transitions. [2021-11-20 07:19:58,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2021-11-20 07:19:58,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:19:58,513 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] [2021-11-20 07:19:58,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-20 07:19:58,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:19:58,728 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:19:58,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:58,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1771791318, now seen corresponding path program 24 times [2021-11-20 07:19:58,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:58,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798114066] [2021-11-20 07:19:58,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:58,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:19:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 07:19:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:19:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:00,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:00,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:00,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:00,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:00,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:00,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:00,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:00,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:02,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:02,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:02,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:02,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5381 backedges. 0 proven. 2686 refuted. 0 times theorem prover too weak. 2695 trivial. 0 not checked. [2021-11-20 07:20:02,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:02,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798114066] [2021-11-20 07:20:02,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798114066] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:20:02,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587314499] [2021-11-20 07:20:02,553 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 07:20:02,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:20:02,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:20:02,562 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:20:02,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-20 07:20:04,808 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2021-11-20 07:20:04,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:20:04,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 122 conjunts are in the unsatisfiable core [2021-11-20 07:20:04,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:20:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 5381 backedges. 0 proven. 2686 refuted. 0 times theorem prover too weak. 2695 trivial. 0 not checked. [2021-11-20 07:20:09,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:20:42,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587314499] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:20:42,388 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:20:42,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 93 [2021-11-20 07:20:42,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428546533] [2021-11-20 07:20:42,388 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:20:42,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-20 07:20:42,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:20:42,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-20 07:20:42,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=8812, Unknown=0, NotChecked=0, Total=9120 [2021-11-20 07:20:42,391 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) [2021-11-20 07:20:51,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:51,276 INFO L93 Difference]: Finished difference Result 586 states and 651 transitions. [2021-11-20 07:20:51,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-20 07:20:51,277 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 [2021-11-20 07:20:51,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:51,280 INFO L225 Difference]: With dead ends: 586 [2021-11-20 07:20:51,280 INFO L226 Difference]: Without dead ends: 583 [2021-11-20 07:20:51,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 390 SyntacticMatches, 27 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4433 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=923, Invalid=22947, Unknown=0, NotChecked=0, Total=23870 [2021-11-20 07:20:51,283 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 315 mSDsluCounter, 5561 mSDsCounter, 0 mSdLazyCounter, 8611 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s 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, 4.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:51,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 5648 Invalid, 8816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 8611 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-20 07:20:51,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-20 07:20:51,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 582. [2021-11-20 07:20:51,306 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) [2021-11-20 07:20:51,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 646 transitions. [2021-11-20 07:20:51,308 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 646 transitions. Word has length 382 [2021-11-20 07:20:51,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:51,309 INFO L470 AbstractCegarLoop]: Abstraction has 582 states and 646 transitions. [2021-11-20 07:20:51,310 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) [2021-11-20 07:20:51,310 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 646 transitions. [2021-11-20 07:20:51,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-11-20 07:20:51,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:51,315 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] [2021-11-20 07:20:51,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-20 07:20:51,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:20:51,531 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:20:51,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:51,532 INFO L85 PathProgramCache]: Analyzing trace with hash 151537314, now seen corresponding path program 25 times [2021-11-20 07:20:51,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:51,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652901784] [2021-11-20 07:20:51,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:51,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:51,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:20:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:51,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:20:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:51,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:52,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:52,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:52,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:52,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:52,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:52,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:53,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:53,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:53,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:53,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:53,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:53,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:53,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:53,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:54,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:54,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:54,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:54,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:54,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:54,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:54,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:54,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:54,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:55,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:55,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:55,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:55,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:55,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:20:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:55,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5311 backedges. 0 proven. 2440 refuted. 0 times theorem prover too weak. 2871 trivial. 0 not checked. [2021-11-20 07:20:55,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:55,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652901784] [2021-11-20 07:20:55,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652901784] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:20:55,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597119761] [2021-11-20 07:20:55,646 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 07:20:55,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:20:55,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:20:55,664 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:20:55,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-20 07:20:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 122 conjunts are in the unsatisfiable core [2021-11-20 07:20:58,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5311 backedges. 0 proven. 2440 refuted. 0 times theorem prover too weak. 2871 trivial. 0 not checked. [2021-11-20 07:21:02,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:38,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597119761] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:21:38,851 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:21:38,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 96 [2021-11-20 07:21:38,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580863947] [2021-11-20 07:21:38,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:21:38,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-11-20 07:21:38,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:21:38,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-11-20 07:21:38,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=9384, Unknown=0, NotChecked=0, Total=9702 [2021-11-20 07:21:38,854 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) [2021-11-20 07:21:48,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:48,112 INFO L93 Difference]: Finished difference Result 591 states and 656 transitions. [2021-11-20 07:21:48,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-20 07:21:48,113 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 [2021-11-20 07:21:48,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:48,115 INFO L225 Difference]: With dead ends: 591 [2021-11-20 07:21:48,116 INFO L226 Difference]: Without dead ends: 588 [2021-11-20 07:21:48,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 384 SyntacticMatches, 28 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4736 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=954, Invalid=24486, Unknown=0, NotChecked=0, Total=25440 [2021-11-20 07:21:48,118 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 324 mSDsluCounter, 6597 mSDsCounter, 0 mSdLazyCounter, 9650 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s 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, 5.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:48,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 6685 Invalid, 9863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 9650 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-20 07:21:48,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-11-20 07:21:48,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 587. [2021-11-20 07:21:48,142 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) [2021-11-20 07:21:48,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 651 transitions. [2021-11-20 07:21:48,145 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 651 transitions. Word has length 380 [2021-11-20 07:21:48,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:48,146 INFO L470 AbstractCegarLoop]: Abstraction has 587 states and 651 transitions. [2021-11-20 07:21:48,146 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) [2021-11-20 07:21:48,146 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 651 transitions. [2021-11-20 07:21:48,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-20 07:21:48,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:48,151 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] [2021-11-20 07:21:48,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:48,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:21:48,368 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:21:48,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:48,368 INFO L85 PathProgramCache]: Analyzing trace with hash -499034922, now seen corresponding path program 26 times [2021-11-20 07:21:48,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:21:48,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034898663] [2021-11-20 07:21:48,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:48,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:21:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:48,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:21:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:48,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:21:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:48,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:48,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:48,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:49,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:49,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:49,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:49,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:49,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:49,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:49,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:50,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:50,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:50,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:50,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:50,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:50,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:21:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5674 backedges. 0 proven. 2599 refuted. 0 times theorem prover too weak. 3075 trivial. 0 not checked. [2021-11-20 07:21:52,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:21:52,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034898663] [2021-11-20 07:21:52,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034898663] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:21:52,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365271794] [2021-11-20 07:21:52,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:21:52,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:21:52,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:21:52,832 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:21:52,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-20 07:21:55,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:21:55,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:21:55,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 126 conjunts are in the unsatisfiable core [2021-11-20 07:21:55,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:22:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5674 backedges. 0 proven. 2599 refuted. 0 times theorem prover too weak. 3075 trivial. 0 not checked. [2021-11-20 07:22:00,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:22:39,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365271794] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:22:39,098 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:22:39,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 99 [2021-11-20 07:22:39,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468449856] [2021-11-20 07:22:39,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:22:39,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-11-20 07:22:39,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:22:39,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-11-20 07:22:39,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=9974, Unknown=0, NotChecked=0, Total=10302 [2021-11-20 07:22:39,101 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) [2021-11-20 07:22:48,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:48,825 INFO L93 Difference]: Finished difference Result 596 states and 661 transitions. [2021-11-20 07:22:48,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-20 07:22:48,825 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 [2021-11-20 07:22:48,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:48,833 INFO L225 Difference]: With dead ends: 596 [2021-11-20 07:22:48,833 INFO L226 Difference]: Without dead ends: 593 [2021-11-20 07:22:48,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 396 SyntacticMatches, 29 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=985, Invalid=26075, Unknown=0, NotChecked=0, Total=27060 [2021-11-20 07:22:48,837 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 434 mSDsluCounter, 5573 mSDsCounter, 0 mSdLazyCounter, 9925 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s 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, 5.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:48,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 5662 Invalid, 10208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 9925 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-11-20 07:22:48,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-11-20 07:22:48,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 592. [2021-11-20 07:22:48,858 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) [2021-11-20 07:22:48,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 656 transitions. [2021-11-20 07:22:48,860 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 656 transitions. Word has length 392 [2021-11-20 07:22:48,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:48,861 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 656 transitions. [2021-11-20 07:22:48,861 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) [2021-11-20 07:22:48,861 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 656 transitions. [2021-11-20 07:22:48,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2021-11-20 07:22:48,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:48,866 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] [2021-11-20 07:22:48,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-20 07:22:49,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0000ea21-52b2-461c-9abe-7a14bd10c277/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-20 07:22:49,088 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 07:22:49,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:49,088 INFO L85 PathProgramCache]: Analyzing trace with hash 624826786, now seen corresponding path program 27 times [2021-11-20 07:22:49,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:22:49,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244482917] [2021-11-20 07:22:49,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:49,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:22:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:49,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:22:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:49,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 07:22:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:49,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:22:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:49,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:22:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:49,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:22:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:49,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:22:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:50,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:22:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:50,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:22:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:50,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:22:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:50,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:22:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:50,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:22:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:50,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:22:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:50,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:22:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:51,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:22:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:51,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:22:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:51,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:22:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:51,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:22:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat