./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:29:06,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:29:06,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:29:06,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:29:06,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:29:06,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:29:06,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:29:06,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:29:06,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:29:06,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:29:06,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:29:06,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:29:06,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:29:06,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:29:06,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:29:06,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:29:06,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:29:06,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:29:06,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:29:06,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:29:06,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:29:06,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:29:06,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:29:06,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:29:06,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:29:06,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:29:06,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:29:06,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:29:06,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:29:06,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:29:06,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:29:06,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:29:06,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:29:06,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:29:06,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:29:06,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:29:06,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:29:06,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:29:06,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:29:06,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:29:06,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:29:06,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-11-02 22:29:06,779 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:29:06,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:29:06,784 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:29:06,784 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:29:06,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:29:06,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:29:06,792 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:29:06,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:29:06,792 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:29:06,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:29:06,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:29:06,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:29:06,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:29:06,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:29:06,794 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-02 22:29:06,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:29:06,795 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:29:06,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:29:06,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:29:06,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:29:06,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:29:06,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:29:06,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:29:06,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:29:06,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:29:06,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:29:06,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:29:06,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:29:06,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:29:06,800 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_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 [2021-11-02 22:29:07,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:29:07,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:29:07,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:29:07,058 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:29:07,059 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:29:07,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-11-02 22:29:07,119 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/data/45a9ca5a9/ff1516668c5347c9b2acab69fc01c690/FLAG5b15c192b [2021-11-02 22:29:07,505 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:29:07,506 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-11-02 22:29:07,511 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/data/45a9ca5a9/ff1516668c5347c9b2acab69fc01c690/FLAG5b15c192b [2021-11-02 22:29:07,938 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/data/45a9ca5a9/ff1516668c5347c9b2acab69fc01c690 [2021-11-02 22:29:07,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:29:07,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:29:07,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:29:07,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:29:07,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:29:07,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:29:07" (1/1) ... [2021-11-02 22:29:07,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1215cbe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:07, skipping insertion in model container [2021-11-02 22:29:07,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:29:07" (1/1) ... [2021-11-02 22:29:07,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:29:07,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:29:08,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:29:08,119 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:29:08,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:29:08,151 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:29:08,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:08 WrapperNode [2021-11-02 22:29:08,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:29:08,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:29:08,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:29:08,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:29:08,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:08" (1/1) ... [2021-11-02 22:29:08,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:08" (1/1) ... [2021-11-02 22:29:08,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:29:08,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:29:08,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:29:08,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:29:08,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:08" (1/1) ... [2021-11-02 22:29:08,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:08" (1/1) ... [2021-11-02 22:29:08,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:08" (1/1) ... [2021-11-02 22:29:08,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:08" (1/1) ... [2021-11-02 22:29:08,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:08" (1/1) ... [2021-11-02 22:29:08,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:08" (1/1) ... [2021-11-02 22:29:08,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:08" (1/1) ... [2021-11-02 22:29:08,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:29:08,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:29:08,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:29:08,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:29:08,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:08" (1/1) ... [2021-11-02 22:29:08,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:29:08,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:08,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:29:08,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:29:08,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:29:08,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:29:08,411 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:29:08,411 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-02 22:29:08,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:29:08 BoogieIcfgContainer [2021-11-02 22:29:08,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:29:08,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:29:08,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:29:08,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:29:08,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:29:07" (1/3) ... [2021-11-02 22:29:08,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13be1f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:29:08, skipping insertion in model container [2021-11-02 22:29:08,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:29:08" (2/3) ... [2021-11-02 22:29:08,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13be1f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:29:08, skipping insertion in model container [2021-11-02 22:29:08,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:29:08" (3/3) ... [2021-11-02 22:29:08,421 INFO L111 eAbstractionObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-11-02 22:29:08,425 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:29:08,426 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-02 22:29:08,468 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:29:08,475 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 [2021-11-02 22:29:08,475 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-02 22:29:08,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 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) [2021-11-02 22:29:08,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-02 22:29:08,493 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:08,493 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-02 22:29:08,494 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:08,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:08,499 INFO L85 PathProgramCache]: Analyzing trace with hash 957573, now seen corresponding path program 1 times [2021-11-02 22:29:08,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:08,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086725914] [2021-11-02 22:29:08,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:08,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:08,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:08,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086725914] [2021-11-02 22:29:08,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086725914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:08,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:08,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:29:08,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656741371] [2021-11-02 22:29:08,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:29:08,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:08,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:29:08,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:29:08,685 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 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) 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) [2021-11-02 22:29:08,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:08,749 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2021-11-02 22:29:08,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:29:08,751 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 [2021-11-02 22:29:08,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:08,758 INFO L225 Difference]: With dead ends: 60 [2021-11-02 22:29:08,759 INFO L226 Difference]: Without dead ends: 30 [2021-11-02 22:29:08,761 INFO L786 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 [2021-11-02 22:29:08,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-02 22:29:08,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-11-02 22:29:08,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 26 states have internal predecessors, (32), 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) [2021-11-02 22:29:08,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2021-11-02 22:29:08,814 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 4 [2021-11-02 22:29:08,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:08,821 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2021-11-02 22:29:08,822 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) [2021-11-02 22:29:08,822 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2021-11-02 22:29:08,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-02 22:29:08,822 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:08,822 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-02 22:29:08,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:29:08,823 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:08,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:08,825 INFO L85 PathProgramCache]: Analyzing trace with hash 29684810, now seen corresponding path program 1 times [2021-11-02 22:29:08,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:08,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698430969] [2021-11-02 22:29:08,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:08,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:08,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:08,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:08,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698430969] [2021-11-02 22:29:08,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698430969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:08,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:08,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:29:08,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293434632] [2021-11-02 22:29:08,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:29:08,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:08,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:29:08,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:29:08,859 INFO L87 Difference]: Start difference. First operand 27 states and 32 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) [2021-11-02 22:29:08,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:08,891 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-11-02 22:29:08,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:29:08,892 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 [2021-11-02 22:29:08,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:08,893 INFO L225 Difference]: With dead ends: 31 [2021-11-02 22:29:08,893 INFO L226 Difference]: Without dead ends: 30 [2021-11-02 22:29:08,894 INFO L786 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 [2021-11-02 22:29:08,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-02 22:29:08,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-02 22:29:08,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 29 states have internal predecessors, (35), 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) [2021-11-02 22:29:08,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2021-11-02 22:29:08,900 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 5 [2021-11-02 22:29:08,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:08,900 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2021-11-02 22:29:08,900 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) [2021-11-02 22:29:08,900 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2021-11-02 22:29:08,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:29:08,901 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:08,901 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:08,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:29:08,902 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:08,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:08,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1537666919, now seen corresponding path program 1 times [2021-11-02 22:29:08,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:08,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72501409] [2021-11-02 22:29:08,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:08,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:08,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:08,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72501409] [2021-11-02 22:29:08,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72501409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:08,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:08,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:29:08,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470897266] [2021-11-02 22:29:08,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:29:08,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:08,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:29:08,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:08,953 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-02 22:29:09,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:09,011 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2021-11-02 22:29:09,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:29:09,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-11-02 22:29:09,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:09,014 INFO L225 Difference]: With dead ends: 48 [2021-11-02 22:29:09,015 INFO L226 Difference]: Without dead ends: 47 [2021-11-02 22:29:09,015 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:09,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-02 22:29:09,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2021-11-02 22:29:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.6) internal successors, (48), 37 states have internal predecessors, (48), 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) [2021-11-02 22:29:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2021-11-02 22:29:09,023 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 7 [2021-11-02 22:29:09,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:09,024 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2021-11-02 22:29:09,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-02 22:29:09,024 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2021-11-02 22:29:09,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 22:29:09,025 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:09,025 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:09,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:29:09,026 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:09,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:09,027 INFO L85 PathProgramCache]: Analyzing trace with hash -423034162, now seen corresponding path program 1 times [2021-11-02 22:29:09,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:09,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963620317] [2021-11-02 22:29:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:09,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:09,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:09,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:09,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963620317] [2021-11-02 22:29:09,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963620317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:09,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:09,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:29:09,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105827539] [2021-11-02 22:29:09,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:29:09,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:09,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:29:09,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:29:09,085 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-11-02 22:29:09,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:09,188 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2021-11-02 22:29:09,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:29:09,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2021-11-02 22:29:09,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:09,190 INFO L225 Difference]: With dead ends: 52 [2021-11-02 22:29:09,190 INFO L226 Difference]: Without dead ends: 51 [2021-11-02 22:29:09,191 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:29:09,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-02 22:29:09,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2021-11-02 22:29:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 38 states have (on average 1.631578947368421) internal successors, (62), 45 states have internal predecessors, (62), 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) [2021-11-02 22:29:09,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2021-11-02 22:29:09,200 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 8 [2021-11-02 22:29:09,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:09,201 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2021-11-02 22:29:09,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-11-02 22:29:09,201 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2021-11-02 22:29:09,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 22:29:09,202 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:09,202 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:09,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:29:09,203 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:09,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:09,204 INFO L85 PathProgramCache]: Analyzing trace with hash -423032592, now seen corresponding path program 1 times [2021-11-02 22:29:09,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:09,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857428393] [2021-11-02 22:29:09,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:09,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:09,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:09,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:09,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857428393] [2021-11-02 22:29:09,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857428393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:09,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:09,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:29:09,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661875143] [2021-11-02 22:29:09,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:29:09,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:09,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:29:09,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:09,242 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-02 22:29:09,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:09,289 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2021-11-02 22:29:09,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:29:09,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-11-02 22:29:09,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:09,291 INFO L225 Difference]: With dead ends: 75 [2021-11-02 22:29:09,291 INFO L226 Difference]: Without dead ends: 73 [2021-11-02 22:29:09,292 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:09,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-02 22:29:09,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2021-11-02 22:29:09,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.5789473684210527) internal successors, (90), 64 states have internal predecessors, (90), 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) [2021-11-02 22:29:09,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2021-11-02 22:29:09,312 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 90 transitions. Word has length 8 [2021-11-02 22:29:09,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:09,314 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 90 transitions. [2021-11-02 22:29:09,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-02 22:29:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 90 transitions. [2021-11-02 22:29:09,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:29:09,315 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:09,315 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:09,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:29:09,316 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:09,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:09,319 INFO L85 PathProgramCache]: Analyzing trace with hash -229108402, now seen corresponding path program 1 times [2021-11-02 22:29:09,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:09,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58660185] [2021-11-02 22:29:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:09,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:09,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:09,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:09,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58660185] [2021-11-02 22:29:09,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58660185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:09,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:09,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:29:09,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432559097] [2021-11-02 22:29:09,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:29:09,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:09,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:29:09,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:29:09,382 INFO L87 Difference]: Start difference. First operand 65 states and 90 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-11-02 22:29:09,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:09,396 INFO L93 Difference]: Finished difference Result 65 states and 90 transitions. [2021-11-02 22:29:09,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:29:09,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-11-02 22:29:09,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:09,397 INFO L225 Difference]: With dead ends: 65 [2021-11-02 22:29:09,397 INFO L226 Difference]: Without dead ends: 64 [2021-11-02 22:29:09,398 INFO L786 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 [2021-11-02 22:29:09,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-02 22:29:09,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-02 22:29:09,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 1.5087719298245614) internal successors, (86), 63 states have internal predecessors, (86), 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) [2021-11-02 22:29:09,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2021-11-02 22:29:09,407 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 9 [2021-11-02 22:29:09,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:09,407 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2021-11-02 22:29:09,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-11-02 22:29:09,408 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2021-11-02 22:29:09,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 22:29:09,408 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:09,408 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:09,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:29:09,409 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:09,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1487574194, now seen corresponding path program 1 times [2021-11-02 22:29:09,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:09,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377868126] [2021-11-02 22:29:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:09,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:09,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:09,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377868126] [2021-11-02 22:29:09,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377868126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:09,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:09,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:29:09,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330165251] [2021-11-02 22:29:09,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:29:09,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:09,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:29:09,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:09,444 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-02 22:29:09,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:09,468 INFO L93 Difference]: Finished difference Result 64 states and 86 transitions. [2021-11-02 22:29:09,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:29:09,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-11-02 22:29:09,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:09,470 INFO L225 Difference]: With dead ends: 64 [2021-11-02 22:29:09,470 INFO L226 Difference]: Without dead ends: 63 [2021-11-02 22:29:09,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:29:09,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-02 22:29:09,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-11-02 22:29:09,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 62 states have internal predecessors, (82), 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) [2021-11-02 22:29:09,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2021-11-02 22:29:09,479 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 10 [2021-11-02 22:29:09,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:09,480 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2021-11-02 22:29:09,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-02 22:29:09,480 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2021-11-02 22:29:09,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:29:09,481 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:09,481 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:09,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:29:09,482 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:09,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:09,482 INFO L85 PathProgramCache]: Analyzing trace with hash -665307340, now seen corresponding path program 1 times [2021-11-02 22:29:09,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:09,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317476046] [2021-11-02 22:29:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:09,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:09,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:09,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317476046] [2021-11-02 22:29:09,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317476046] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:09,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676233069] [2021-11-02 22:29:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:09,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:09,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:09,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:09,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:29:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:09,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:29:09,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:09,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676233069] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:09,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:09,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-11-02 22:29:09,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727052999] [2021-11-02 22:29:09,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:29:09,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:09,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:29:09,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:09,691 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-02 22:29:09,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:09,745 INFO L93 Difference]: Finished difference Result 108 states and 146 transitions. [2021-11-02 22:29:09,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:29:09,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-11-02 22:29:09,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:09,747 INFO L225 Difference]: With dead ends: 108 [2021-11-02 22:29:09,750 INFO L226 Difference]: Without dead ends: 106 [2021-11-02 22:29:09,750 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:09,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-02 22:29:09,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 84. [2021-11-02 22:29:09,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 78 states have (on average 1.4230769230769231) internal successors, (111), 83 states have internal predecessors, (111), 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) [2021-11-02 22:29:09,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 111 transitions. [2021-11-02 22:29:09,773 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 111 transitions. Word has length 12 [2021-11-02 22:29:09,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:09,773 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 111 transitions. [2021-11-02 22:29:09,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-02 22:29:09,774 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 111 transitions. [2021-11-02 22:29:09,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-02 22:29:09,775 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:09,775 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-02 22:29:09,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:09,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-02 22:29:09,989 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:09,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:09,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1165906802, now seen corresponding path program 1 times [2021-11-02 22:29:09,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:09,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812068611] [2021-11-02 22:29:09,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:09,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:10,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:10,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812068611] [2021-11-02 22:29:10,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812068611] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:10,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550759427] [2021-11-02 22:29:10,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:10,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:10,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:10,075 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:10,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:29:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:10,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:29:10,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:10,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:10,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550759427] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:10,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:10,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-11-02 22:29:10,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775258252] [2021-11-02 22:29:10,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:29:10,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:10,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:29:10,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:29:10,341 INFO L87 Difference]: Start difference. First operand 84 states and 111 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 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) [2021-11-02 22:29:10,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:10,495 INFO L93 Difference]: Finished difference Result 120 states and 155 transitions. [2021-11-02 22:29:10,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:29:10,496 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 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 13 [2021-11-02 22:29:10,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:10,497 INFO L225 Difference]: With dead ends: 120 [2021-11-02 22:29:10,497 INFO L226 Difference]: Without dead ends: 119 [2021-11-02 22:29:10,497 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:29:10,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-02 22:29:10,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 104. [2021-11-02 22:29:10,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 98 states have (on average 1.3979591836734695) internal successors, (137), 103 states have internal predecessors, (137), 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) [2021-11-02 22:29:10,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 137 transitions. [2021-11-02 22:29:10,508 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 137 transitions. Word has length 13 [2021-11-02 22:29:10,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:10,509 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 137 transitions. [2021-11-02 22:29:10,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 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) [2021-11-02 22:29:10,509 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 137 transitions. [2021-11-02 22:29:10,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-02 22:29:10,510 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:10,510 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-02 22:29:10,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:10,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:10,733 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:10,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:10,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1783372423, now seen corresponding path program 1 times [2021-11-02 22:29:10,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:10,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886005763] [2021-11-02 22:29:10,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:10,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:10,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:10,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886005763] [2021-11-02 22:29:10,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886005763] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:10,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781950631] [2021-11-02 22:29:10,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:10,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:10,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:10,860 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:10,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:29:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:10,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:29:10,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:11,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:11,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781950631] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:11,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:11,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-11-02 22:29:11,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257335624] [2021-11-02 22:29:11,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:29:11,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:11,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:29:11,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:29:11,060 INFO L87 Difference]: Start difference. First operand 104 states and 137 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 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) [2021-11-02 22:29:11,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:11,383 INFO L93 Difference]: Finished difference Result 211 states and 288 transitions. [2021-11-02 22:29:11,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 22:29:11,384 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 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 14 [2021-11-02 22:29:11,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:11,385 INFO L225 Difference]: With dead ends: 211 [2021-11-02 22:29:11,386 INFO L226 Difference]: Without dead ends: 208 [2021-11-02 22:29:11,386 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:29:11,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-02 22:29:11,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 126. [2021-11-02 22:29:11,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 120 states have (on average 1.35) internal successors, (162), 125 states have internal predecessors, (162), 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) [2021-11-02 22:29:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 162 transitions. [2021-11-02 22:29:11,411 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 162 transitions. Word has length 14 [2021-11-02 22:29:11,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:11,412 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 162 transitions. [2021-11-02 22:29:11,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 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) [2021-11-02 22:29:11,412 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 162 transitions. [2021-11-02 22:29:11,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 22:29:11,413 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:11,413 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:11,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-02 22:29:11,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 22:29:11,615 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:11,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:11,617 INFO L85 PathProgramCache]: Analyzing trace with hash -715599412, now seen corresponding path program 2 times [2021-11-02 22:29:11,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:11,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788726204] [2021-11-02 22:29:11,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:11,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:11,687 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:11,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:11,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788726204] [2021-11-02 22:29:11,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788726204] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:11,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005650424] [2021-11-02 22:29:11,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:29:11,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:11,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:11,690 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:11,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 22:29:11,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:29:11,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:11,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:29:11,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:11,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:11,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005650424] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:11,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:11,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-11-02 22:29:11,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378412743] [2021-11-02 22:29:11,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:29:11,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:11,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:29:11,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:29:11,821 INFO L87 Difference]: Start difference. First operand 126 states and 162 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-11-02 22:29:11,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:11,876 INFO L93 Difference]: Finished difference Result 224 states and 297 transitions. [2021-11-02 22:29:11,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:29:11,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2021-11-02 22:29:11,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:11,878 INFO L225 Difference]: With dead ends: 224 [2021-11-02 22:29:11,879 INFO L226 Difference]: Without dead ends: 222 [2021-11-02 22:29:11,879 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:29:11,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-02 22:29:11,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 151. [2021-11-02 22:29:11,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 145 states have (on average 1.3310344827586207) internal successors, (193), 150 states have internal predecessors, (193), 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) [2021-11-02 22:29:11,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 193 transitions. [2021-11-02 22:29:11,891 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 193 transitions. Word has length 17 [2021-11-02 22:29:11,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:11,891 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 193 transitions. [2021-11-02 22:29:11,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-11-02 22:29:11,892 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 193 transitions. [2021-11-02 22:29:11,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-02 22:29:11,893 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:11,893 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:11,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:12,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-02 22:29:12,116 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:12,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:12,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1570006262, now seen corresponding path program 1 times [2021-11-02 22:29:12,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:12,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138517848] [2021-11-02 22:29:12,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:12,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:12,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:12,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138517848] [2021-11-02 22:29:12,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138517848] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:12,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944509319] [2021-11-02 22:29:12,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:12,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:12,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:12,231 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:12,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 22:29:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:12,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 22:29:12,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:12,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944509319] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:12,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:12,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-02 22:29:12,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659386618] [2021-11-02 22:29:12,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 22:29:12,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:12,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 22:29:12,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-02 22:29:12,462 INFO L87 Difference]: Start difference. First operand 151 states and 193 transitions. Second operand has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 14 states have internal predecessors, (35), 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) [2021-11-02 22:29:12,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:12,752 INFO L93 Difference]: Finished difference Result 258 states and 330 transitions. [2021-11-02 22:29:12,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 22:29:12,752 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 14 states have internal predecessors, (35), 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 18 [2021-11-02 22:29:12,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:12,754 INFO L225 Difference]: With dead ends: 258 [2021-11-02 22:29:12,754 INFO L226 Difference]: Without dead ends: 257 [2021-11-02 22:29:12,755 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2021-11-02 22:29:12,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-02 22:29:12,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 219. [2021-11-02 22:29:12,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 213 states have (on average 1.323943661971831) internal successors, (282), 218 states have internal predecessors, (282), 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) [2021-11-02 22:29:12,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 282 transitions. [2021-11-02 22:29:12,767 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 282 transitions. Word has length 18 [2021-11-02 22:29:12,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:12,768 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 282 transitions. [2021-11-02 22:29:12,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 14 states have internal predecessors, (35), 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) [2021-11-02 22:29:12,768 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 282 transitions. [2021-11-02 22:29:12,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-02 22:29:12,769 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:12,769 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1] [2021-11-02 22:29:12,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-02 22:29:12,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-02 22:29:12,989 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:12,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:12,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1730102077, now seen corresponding path program 2 times [2021-11-02 22:29:12,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:12,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110040612] [2021-11-02 22:29:12,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:12,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:13,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:13,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110040612] [2021-11-02 22:29:13,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110040612] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:13,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812414964] [2021-11-02 22:29:13,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:29:13,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:13,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:13,100 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:13,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 22:29:13,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:29:13,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:13,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 22:29:13,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:13,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812414964] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:13,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:13,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-02 22:29:13,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753002631] [2021-11-02 22:29:13,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 22:29:13,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:13,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 22:29:13,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-02 22:29:13,360 INFO L87 Difference]: Start difference. First operand 219 states and 282 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 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) [2021-11-02 22:29:13,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:13,588 INFO L93 Difference]: Finished difference Result 276 states and 348 transitions. [2021-11-02 22:29:13,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 22:29:13,588 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 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 19 [2021-11-02 22:29:13,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:13,591 INFO L225 Difference]: With dead ends: 276 [2021-11-02 22:29:13,591 INFO L226 Difference]: Without dead ends: 275 [2021-11-02 22:29:13,591 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:29:13,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-02 22:29:13,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 232. [2021-11-02 22:29:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 226 states have (on average 1.3185840707964602) internal successors, (298), 231 states have internal predecessors, (298), 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) [2021-11-02 22:29:13,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 298 transitions. [2021-11-02 22:29:13,604 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 298 transitions. Word has length 19 [2021-11-02 22:29:13,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:13,605 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 298 transitions. [2021-11-02 22:29:13,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 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) [2021-11-02 22:29:13,605 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 298 transitions. [2021-11-02 22:29:13,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 22:29:13,606 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:13,607 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:13,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:13,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-02 22:29:13,837 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:13,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:13,839 INFO L85 PathProgramCache]: Analyzing trace with hash -972483020, now seen corresponding path program 3 times [2021-11-02 22:29:13,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:13,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872184291] [2021-11-02 22:29:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:13,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:13,912 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:13,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:13,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872184291] [2021-11-02 22:29:13,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872184291] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:13,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266849959] [2021-11-02 22:29:13,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:29:13,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:13,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:13,914 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:13,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 22:29:14,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-02 22:29:14,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:14,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:29:14,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:14,084 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:14,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266849959] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:14,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:14,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-11-02 22:29:14,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024106443] [2021-11-02 22:29:14,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:29:14,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:14,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:29:14,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:29:14,088 INFO L87 Difference]: Start difference. First operand 232 states and 298 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-11-02 22:29:14,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:14,166 INFO L93 Difference]: Finished difference Result 349 states and 460 transitions. [2021-11-02 22:29:14,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:29:14,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2021-11-02 22:29:14,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:14,171 INFO L225 Difference]: With dead ends: 349 [2021-11-02 22:29:14,171 INFO L226 Difference]: Without dead ends: 347 [2021-11-02 22:29:14,172 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:29:14,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-11-02 22:29:14,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 268. [2021-11-02 22:29:14,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 262 states have (on average 1.3129770992366412) internal successors, (344), 267 states have internal predecessors, (344), 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) [2021-11-02 22:29:14,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 344 transitions. [2021-11-02 22:29:14,189 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 344 transitions. Word has length 22 [2021-11-02 22:29:14,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:14,189 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 344 transitions. [2021-11-02 22:29:14,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-11-02 22:29:14,189 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 344 transitions. [2021-11-02 22:29:14,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 22:29:14,193 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:14,193 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:14,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:14,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:14,412 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:14,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:14,413 INFO L85 PathProgramCache]: Analyzing trace with hash 512853803, now seen corresponding path program 2 times [2021-11-02 22:29:14,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:14,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561929124] [2021-11-02 22:29:14,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:14,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:14,494 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:14,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:14,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561929124] [2021-11-02 22:29:14,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561929124] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:14,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227646491] [2021-11-02 22:29:14,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:29:14,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:14,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:14,496 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:14,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 22:29:14,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:29:14,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:14,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 22:29:14,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:14,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227646491] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:14,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:14,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-11-02 22:29:14,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083334219] [2021-11-02 22:29:14,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:29:14,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:14,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:29:14,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:29:14,815 INFO L87 Difference]: Start difference. First operand 268 states and 344 transitions. Second operand has 18 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 states have internal predecessors, (47), 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) [2021-11-02 22:29:15,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:15,477 INFO L93 Difference]: Finished difference Result 627 states and 814 transitions. [2021-11-02 22:29:15,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 22:29:15,478 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 states have internal predecessors, (47), 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 24 [2021-11-02 22:29:15,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:15,482 INFO L225 Difference]: With dead ends: 627 [2021-11-02 22:29:15,482 INFO L226 Difference]: Without dead ends: 626 [2021-11-02 22:29:15,484 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=515, Invalid=1291, Unknown=0, NotChecked=0, Total=1806 [2021-11-02 22:29:15,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-11-02 22:29:15,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 396. [2021-11-02 22:29:15,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 390 states have (on average 1.3025641025641026) internal successors, (508), 395 states have internal predecessors, (508), 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) [2021-11-02 22:29:15,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 508 transitions. [2021-11-02 22:29:15,507 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 508 transitions. Word has length 24 [2021-11-02 22:29:15,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:15,508 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 508 transitions. [2021-11-02 22:29:15,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 states have internal predecessors, (47), 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) [2021-11-02 22:29:15,508 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 508 transitions. [2021-11-02 22:29:15,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-02 22:29:15,509 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:15,509 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1] [2021-11-02 22:29:15,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:15,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:15,733 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:15,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:15,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1264455992, now seen corresponding path program 3 times [2021-11-02 22:29:15,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:15,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89844391] [2021-11-02 22:29:15,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:15,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:15,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:15,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89844391] [2021-11-02 22:29:15,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89844391] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:15,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432955603] [2021-11-02 22:29:15,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:29:15,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:15,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:15,855 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:15,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 22:29:15,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-02 22:29:15,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:15,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 22:29:15,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:16,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432955603] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:16,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:16,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-11-02 22:29:16,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336883894] [2021-11-02 22:29:16,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:29:16,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:16,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:29:16,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:29:16,193 INFO L87 Difference]: Start difference. First operand 396 states and 508 transitions. Second operand has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 18 states have internal predecessors, (49), 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) [2021-11-02 22:29:16,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:16,559 INFO L93 Difference]: Finished difference Result 503 states and 630 transitions. [2021-11-02 22:29:16,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 22:29:16,559 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 18 states have internal predecessors, (49), 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 25 [2021-11-02 22:29:16,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:16,562 INFO L225 Difference]: With dead ends: 503 [2021-11-02 22:29:16,562 INFO L226 Difference]: Without dead ends: 502 [2021-11-02 22:29:16,563 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2021-11-02 22:29:16,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-11-02 22:29:16,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 413. [2021-11-02 22:29:16,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 407 states have (on average 1.2972972972972974) internal successors, (528), 412 states have internal predecessors, (528), 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) [2021-11-02 22:29:16,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 528 transitions. [2021-11-02 22:29:16,584 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 528 transitions. Word has length 25 [2021-11-02 22:29:16,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:16,584 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 528 transitions. [2021-11-02 22:29:16,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 18 states have internal predecessors, (49), 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) [2021-11-02 22:29:16,585 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 528 transitions. [2021-11-02 22:29:16,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-02 22:29:16,586 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:16,586 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:16,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:16,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-02 22:29:16,800 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:16,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:16,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2119914137, now seen corresponding path program 1 times [2021-11-02 22:29:16,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:16,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610334447] [2021-11-02 22:29:16,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:16,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 22:29:16,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:16,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610334447] [2021-11-02 22:29:16,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610334447] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:16,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950313979] [2021-11-02 22:29:16,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:16,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:16,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:16,882 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:16,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 22:29:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:17,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 22:29:17,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:17,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950313979] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:17,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:17,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-11-02 22:29:17,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567124400] [2021-11-02 22:29:17,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 22:29:17,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:17,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 22:29:17,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:29:17,217 INFO L87 Difference]: Start difference. First operand 413 states and 528 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 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) [2021-11-02 22:29:17,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:17,514 INFO L93 Difference]: Finished difference Result 448 states and 583 transitions. [2021-11-02 22:29:17,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 22:29:17,515 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 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 27 [2021-11-02 22:29:17,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:17,518 INFO L225 Difference]: With dead ends: 448 [2021-11-02 22:29:17,518 INFO L226 Difference]: Without dead ends: 446 [2021-11-02 22:29:17,519 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2021-11-02 22:29:17,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-02 22:29:17,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 385. [2021-11-02 22:29:17,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 379 states have (on average 1.2955145118733509) internal successors, (491), 384 states have internal predecessors, (491), 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) [2021-11-02 22:29:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 491 transitions. [2021-11-02 22:29:17,540 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 491 transitions. Word has length 27 [2021-11-02 22:29:17,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:17,541 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 491 transitions. [2021-11-02 22:29:17,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 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) [2021-11-02 22:29:17,541 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 491 transitions. [2021-11-02 22:29:17,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-02 22:29:17,542 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:17,542 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-02 22:29:17,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:17,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-02 22:29:17,764 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:17,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:17,766 INFO L85 PathProgramCache]: Analyzing trace with hash -723385354, now seen corresponding path program 3 times [2021-11-02 22:29:17,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:17,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665214397] [2021-11-02 22:29:17,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:17,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:17,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:17,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665214397] [2021-11-02 22:29:17,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665214397] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:17,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340170780] [2021-11-02 22:29:17,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:29:17,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:17,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:17,881 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:17,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-02 22:29:18,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-02 22:29:18,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:18,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 22:29:18,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:18,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340170780] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:18,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:18,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-11-02 22:29:18,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621404344] [2021-11-02 22:29:18,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:29:18,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:18,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:29:18,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:29:18,289 INFO L87 Difference]: Start difference. First operand 385 states and 491 transitions. Second operand has 18 states, 17 states have (on average 3.235294117647059) internal successors, (55), 18 states have internal predecessors, (55), 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) [2021-11-02 22:29:19,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:19,217 INFO L93 Difference]: Finished difference Result 1120 states and 1425 transitions. [2021-11-02 22:29:19,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-02 22:29:19,217 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.235294117647059) internal successors, (55), 18 states have internal predecessors, (55), 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 28 [2021-11-02 22:29:19,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:19,224 INFO L225 Difference]: With dead ends: 1120 [2021-11-02 22:29:19,224 INFO L226 Difference]: Without dead ends: 1119 [2021-11-02 22:29:19,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1256 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=875, Invalid=2907, Unknown=0, NotChecked=0, Total=3782 [2021-11-02 22:29:19,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-11-02 22:29:19,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 575. [2021-11-02 22:29:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 569 states have (on average 1.3216168717047452) internal successors, (752), 574 states have internal predecessors, (752), 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) [2021-11-02 22:29:19,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 752 transitions. [2021-11-02 22:29:19,266 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 752 transitions. Word has length 28 [2021-11-02 22:29:19,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:19,267 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 752 transitions. [2021-11-02 22:29:19,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.235294117647059) internal successors, (55), 18 states have internal predecessors, (55), 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) [2021-11-02 22:29:19,268 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 752 transitions. [2021-11-02 22:29:19,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-02 22:29:19,268 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:19,268 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1] [2021-11-02 22:29:19,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:19,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-02 22:29:19,496 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:19,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:19,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1596170910, now seen corresponding path program 1 times [2021-11-02 22:29:19,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:19,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263396897] [2021-11-02 22:29:19,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:19,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-02 22:29:19,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:19,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263396897] [2021-11-02 22:29:19,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263396897] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:19,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136582604] [2021-11-02 22:29:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:19,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:19,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:19,592 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:19,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-02 22:29:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:19,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 22:29:19,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:19,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136582604] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:19,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:19,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 11 [2021-11-02 22:29:19,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964978089] [2021-11-02 22:29:19,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 22:29:19,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:19,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 22:29:19,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:29:19,946 INFO L87 Difference]: Start difference. First operand 575 states and 752 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 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) [2021-11-02 22:29:20,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:20,275 INFO L93 Difference]: Finished difference Result 617 states and 806 transitions. [2021-11-02 22:29:20,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:29:20,276 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 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 29 [2021-11-02 22:29:20,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:20,279 INFO L225 Difference]: With dead ends: 617 [2021-11-02 22:29:20,279 INFO L226 Difference]: Without dead ends: 615 [2021-11-02 22:29:20,280 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2021-11-02 22:29:20,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-11-02 22:29:20,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 573. [2021-11-02 22:29:20,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 569 states have (on average 1.2601054481546572) internal successors, (717), 572 states have internal predecessors, (717), 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) [2021-11-02 22:29:20,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 717 transitions. [2021-11-02 22:29:20,348 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 717 transitions. Word has length 29 [2021-11-02 22:29:20,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:20,349 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 717 transitions. [2021-11-02 22:29:20,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 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) [2021-11-02 22:29:20,349 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 717 transitions. [2021-11-02 22:29:20,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-02 22:29:20,350 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:20,350 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:20,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:20,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:20,575 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:20,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:20,576 INFO L85 PathProgramCache]: Analyzing trace with hash -178819680, now seen corresponding path program 4 times [2021-11-02 22:29:20,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:20,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292219712] [2021-11-02 22:29:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:20,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:20,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:20,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292219712] [2021-11-02 22:29:20,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292219712] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:20,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668551120] [2021-11-02 22:29:20,677 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:29:20,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:20,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:20,679 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:20,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-02 22:29:20,845 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:29:20,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:20,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 22:29:20,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:21,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668551120] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:21,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:21,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-11-02 22:29:21,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684430575] [2021-11-02 22:29:21,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 22:29:21,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:21,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 22:29:21,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:29:21,191 INFO L87 Difference]: Start difference. First operand 573 states and 717 transitions. Second operand has 22 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 22 states have internal predecessors, (59), 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) [2021-11-02 22:29:22,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:22,425 INFO L93 Difference]: Finished difference Result 1767 states and 2199 transitions. [2021-11-02 22:29:22,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-02 22:29:22,426 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 22 states have internal predecessors, (59), 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 30 [2021-11-02 22:29:22,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:22,435 INFO L225 Difference]: With dead ends: 1767 [2021-11-02 22:29:22,435 INFO L226 Difference]: Without dead ends: 1766 [2021-11-02 22:29:22,438 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=988, Invalid=2552, Unknown=0, NotChecked=0, Total=3540 [2021-11-02 22:29:22,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2021-11-02 22:29:22,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 977. [2021-11-02 22:29:22,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 973 states have (on average 1.2538540596094554) internal successors, (1220), 976 states have internal predecessors, (1220), 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) [2021-11-02 22:29:22,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1220 transitions. [2021-11-02 22:29:22,527 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1220 transitions. Word has length 30 [2021-11-02 22:29:22,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:22,527 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1220 transitions. [2021-11-02 22:29:22,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 22 states have internal predecessors, (59), 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) [2021-11-02 22:29:22,527 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1220 transitions. [2021-11-02 22:29:22,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-02 22:29:22,528 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:22,528 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:22,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:22,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:22,756 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:22,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:22,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1163004592, now seen corresponding path program 1 times [2021-11-02 22:29:22,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:22,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451225955] [2021-11-02 22:29:22,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:22,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:22,814 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-02 22:29:22,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:22,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451225955] [2021-11-02 22:29:22,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451225955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:22,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:22,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:29:22,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165233928] [2021-11-02 22:29:22,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:29:22,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:22,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:29:22,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:22,817 INFO L87 Difference]: Start difference. First operand 977 states and 1220 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-11-02 22:29:22,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:22,896 INFO L93 Difference]: Finished difference Result 1074 states and 1337 transitions. [2021-11-02 22:29:22,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:29:22,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 30 [2021-11-02 22:29:22,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:22,903 INFO L225 Difference]: With dead ends: 1074 [2021-11-02 22:29:22,903 INFO L226 Difference]: Without dead ends: 1072 [2021-11-02 22:29:22,904 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:22,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-11-02 22:29:22,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 979. [2021-11-02 22:29:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 976 states have (on average 1.235655737704918) internal successors, (1206), 978 states have internal predecessors, (1206), 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) [2021-11-02 22:29:22,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1206 transitions. [2021-11-02 22:29:22,978 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1206 transitions. Word has length 30 [2021-11-02 22:29:22,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:22,978 INFO L470 AbstractCegarLoop]: Abstraction has 979 states and 1206 transitions. [2021-11-02 22:29:22,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-11-02 22:29:22,979 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1206 transitions. [2021-11-02 22:29:22,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 22:29:22,979 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:22,980 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1] [2021-11-02 22:29:22,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 22:29:22,980 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:22,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:22,981 INFO L85 PathProgramCache]: Analyzing trace with hash 616921581, now seen corresponding path program 4 times [2021-11-02 22:29:22,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:22,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586258043] [2021-11-02 22:29:22,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:22,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:23,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:23,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586258043] [2021-11-02 22:29:23,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586258043] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:23,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863861035] [2021-11-02 22:29:23,070 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:29:23,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:23,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:23,071 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:23,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-02 22:29:23,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:29:23,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:23,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 22:29:23,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:23,582 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:23,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863861035] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:23,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:23,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-11-02 22:29:23,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365673602] [2021-11-02 22:29:23,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 22:29:23,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:23,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 22:29:23,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:29:23,584 INFO L87 Difference]: Start difference. First operand 979 states and 1206 transitions. Second operand has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 22 states have internal predecessors, (61), 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) [2021-11-02 22:29:24,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:24,186 INFO L93 Difference]: Finished difference Result 1159 states and 1410 transitions. [2021-11-02 22:29:24,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 22:29:24,186 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 22 states have internal predecessors, (61), 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 31 [2021-11-02 22:29:24,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:24,193 INFO L225 Difference]: With dead ends: 1159 [2021-11-02 22:29:24,193 INFO L226 Difference]: Without dead ends: 1158 [2021-11-02 22:29:24,197 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=313, Invalid=877, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 22:29:24,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2021-11-02 22:29:24,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 991. [2021-11-02 22:29:24,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 988 states have (on average 1.2348178137651822) internal successors, (1220), 990 states have internal predecessors, (1220), 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) [2021-11-02 22:29:24,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1220 transitions. [2021-11-02 22:29:24,279 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1220 transitions. Word has length 31 [2021-11-02 22:29:24,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:24,280 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 1220 transitions. [2021-11-02 22:29:24,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 22 states have internal predecessors, (61), 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) [2021-11-02 22:29:24,280 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1220 transitions. [2021-11-02 22:29:24,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-02 22:29:24,281 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:24,281 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1] [2021-11-02 22:29:24,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:24,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:24,507 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:24,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:24,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1944699898, now seen corresponding path program 2 times [2021-11-02 22:29:24,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:24,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672108659] [2021-11-02 22:29:24,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:24,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:24,602 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:24,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:24,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672108659] [2021-11-02 22:29:24,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672108659] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:24,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629418956] [2021-11-02 22:29:24,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:29:24,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:24,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:24,605 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:24,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-02 22:29:24,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 22:29:24,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:24,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:29:24,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-02 22:29:24,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629418956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:24,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:29:24,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2021-11-02 22:29:24,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497455041] [2021-11-02 22:29:24,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:29:24,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:24,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:29:24,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-02 22:29:24,905 INFO L87 Difference]: Start difference. First operand 991 states and 1220 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-02 22:29:24,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:24,972 INFO L93 Difference]: Finished difference Result 991 states and 1220 transitions. [2021-11-02 22:29:24,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:29:24,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 32 [2021-11-02 22:29:24,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:24,978 INFO L225 Difference]: With dead ends: 991 [2021-11-02 22:29:24,978 INFO L226 Difference]: Without dead ends: 990 [2021-11-02 22:29:24,979 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-02 22:29:24,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2021-11-02 22:29:25,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 499. [2021-11-02 22:29:25,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 497 states have (on average 1.1911468812877264) internal successors, (592), 498 states have internal predecessors, (592), 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) [2021-11-02 22:29:25,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 592 transitions. [2021-11-02 22:29:25,038 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 592 transitions. Word has length 32 [2021-11-02 22:29:25,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:25,038 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 592 transitions. [2021-11-02 22:29:25,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-02 22:29:25,038 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 592 transitions. [2021-11-02 22:29:25,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-02 22:29:25,039 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:25,039 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:25,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:25,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-02 22:29:25,264 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:25,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:25,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1888537292, now seen corresponding path program 4 times [2021-11-02 22:29:25,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:25,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538321511] [2021-11-02 22:29:25,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:25,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:25,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:25,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538321511] [2021-11-02 22:29:25,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538321511] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:25,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288567749] [2021-11-02 22:29:25,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:29:25,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:25,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:25,346 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:25,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-02 22:29:25,565 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:29:25,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:25,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 22:29:25,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:25,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288567749] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:25,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:25,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-11-02 22:29:25,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716086243] [2021-11-02 22:29:25,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:29:25,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:25,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:29:25,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:29:25,664 INFO L87 Difference]: Start difference. First operand 499 states and 592 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 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) [2021-11-02 22:29:25,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:25,771 INFO L93 Difference]: Finished difference Result 767 states and 913 transitions. [2021-11-02 22:29:25,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:29:25,772 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 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 32 [2021-11-02 22:29:25,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:25,775 INFO L225 Difference]: With dead ends: 767 [2021-11-02 22:29:25,776 INFO L226 Difference]: Without dead ends: 766 [2021-11-02 22:29:25,776 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:29:25,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-11-02 22:29:25,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 579. [2021-11-02 22:29:25,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 577 states have (on average 1.192374350086655) internal successors, (688), 578 states have internal predecessors, (688), 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) [2021-11-02 22:29:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 688 transitions. [2021-11-02 22:29:25,847 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 688 transitions. Word has length 32 [2021-11-02 22:29:25,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:25,847 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 688 transitions. [2021-11-02 22:29:25,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 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) [2021-11-02 22:29:25,848 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 688 transitions. [2021-11-02 22:29:25,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-02 22:29:25,848 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:25,848 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-02 22:29:25,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:26,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:26,076 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:26,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:26,077 INFO L85 PathProgramCache]: Analyzing trace with hash -431329650, now seen corresponding path program 5 times [2021-11-02 22:29:26,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:26,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202520807] [2021-11-02 22:29:26,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:26,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:26,188 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:26,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:26,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202520807] [2021-11-02 22:29:26,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202520807] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:26,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976425508] [2021-11-02 22:29:26,189 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:29:26,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:26,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:26,190 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:26,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-02 22:29:26,404 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-02 22:29:26,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:26,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 22:29:26,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:26,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976425508] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:26,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:26,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 21 [2021-11-02 22:29:26,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480602369] [2021-11-02 22:29:26,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 22:29:26,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:26,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 22:29:26,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:29:26,712 INFO L87 Difference]: Start difference. First operand 579 states and 688 transitions. Second operand has 22 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 22 states have internal predecessors, (65), 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) [2021-11-02 22:29:28,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:28,891 INFO L93 Difference]: Finished difference Result 1721 states and 2009 transitions. [2021-11-02 22:29:28,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-11-02 22:29:28,892 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 22 states have internal predecessors, (65), 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 33 [2021-11-02 22:29:28,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:28,899 INFO L225 Difference]: With dead ends: 1721 [2021-11-02 22:29:28,899 INFO L226 Difference]: Without dead ends: 1720 [2021-11-02 22:29:28,905 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5600 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2718, Invalid=11088, Unknown=0, NotChecked=0, Total=13806 [2021-11-02 22:29:28,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2021-11-02 22:29:28,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 624. [2021-11-02 22:29:28,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 622 states have (on average 1.1993569131832797) internal successors, (746), 623 states have internal predecessors, (746), 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) [2021-11-02 22:29:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 746 transitions. [2021-11-02 22:29:29,001 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 746 transitions. Word has length 33 [2021-11-02 22:29:29,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:29,001 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 746 transitions. [2021-11-02 22:29:29,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 22 states have internal predecessors, (65), 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) [2021-11-02 22:29:29,002 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 746 transitions. [2021-11-02 22:29:29,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-02 22:29:29,003 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:29,003 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2021-11-02 22:29:29,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:29,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-02 22:29:29,228 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:29,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:29,230 INFO L85 PathProgramCache]: Analyzing trace with hash 652994091, now seen corresponding path program 6 times [2021-11-02 22:29:29,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:29,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532521144] [2021-11-02 22:29:29,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:29,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:29,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:29,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532521144] [2021-11-02 22:29:29,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532521144] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:29,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355267497] [2021-11-02 22:29:29,349 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:29:29,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:29,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:29,351 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:29,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-02 22:29:29,614 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-11-02 22:29:29,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:29,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 22:29:29,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:29,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355267497] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:29,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:29,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2021-11-02 22:29:29,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001507870] [2021-11-02 22:29:29,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-02 22:29:29,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:29,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-02 22:29:29,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2021-11-02 22:29:29,889 INFO L87 Difference]: Start difference. First operand 624 states and 746 transitions. Second operand has 21 states, 20 states have (on average 3.35) internal successors, (67), 21 states have internal predecessors, (67), 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) [2021-11-02 22:29:31,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:31,702 INFO L93 Difference]: Finished difference Result 1337 states and 1562 transitions. [2021-11-02 22:29:31,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-11-02 22:29:31,703 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.35) internal successors, (67), 21 states have internal predecessors, (67), 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 34 [2021-11-02 22:29:31,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:31,709 INFO L225 Difference]: With dead ends: 1337 [2021-11-02 22:29:31,709 INFO L226 Difference]: Without dead ends: 1336 [2021-11-02 22:29:31,714 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3926 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2028, Invalid=7872, Unknown=0, NotChecked=0, Total=9900 [2021-11-02 22:29:31,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2021-11-02 22:29:31,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 728. [2021-11-02 22:29:31,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 726 states have (on average 1.1983471074380165) internal successors, (870), 727 states have internal predecessors, (870), 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) [2021-11-02 22:29:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 870 transitions. [2021-11-02 22:29:31,832 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 870 transitions. Word has length 34 [2021-11-02 22:29:31,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:31,832 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 870 transitions. [2021-11-02 22:29:31,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.35) internal successors, (67), 21 states have internal predecessors, (67), 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) [2021-11-02 22:29:31,833 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 870 transitions. [2021-11-02 22:29:31,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-02 22:29:31,834 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:31,834 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:31,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:32,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-02 22:29:32,048 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:32,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:32,050 INFO L85 PathProgramCache]: Analyzing trace with hash -355342251, now seen corresponding path program 7 times [2021-11-02 22:29:32,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:32,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303247709] [2021-11-02 22:29:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:32,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:32,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:32,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303247709] [2021-11-02 22:29:32,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303247709] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:32,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160155939] [2021-11-02 22:29:32,195 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:29:32,195 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:32,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:32,196 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:32,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-02 22:29:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:32,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 22:29:32,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:32,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160155939] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:32,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:32,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23 [2021-11-02 22:29:32,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540803633] [2021-11-02 22:29:32,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-02 22:29:32,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:32,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-02 22:29:32,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2021-11-02 22:29:32,739 INFO L87 Difference]: Start difference. First operand 728 states and 870 transitions. Second operand has 24 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 24 states have internal predecessors, (71), 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) [2021-11-02 22:29:34,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:34,984 INFO L93 Difference]: Finished difference Result 1193 states and 1401 transitions. [2021-11-02 22:29:34,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-02 22:29:34,988 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 24 states have internal predecessors, (71), 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 36 [2021-11-02 22:29:34,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:34,993 INFO L225 Difference]: With dead ends: 1193 [2021-11-02 22:29:34,993 INFO L226 Difference]: Without dead ends: 1192 [2021-11-02 22:29:34,997 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3483 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1897, Invalid=7609, Unknown=0, NotChecked=0, Total=9506 [2021-11-02 22:29:34,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2021-11-02 22:29:35,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 798. [2021-11-02 22:29:35,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 796 states have (on average 1.1972361809045227) internal successors, (953), 797 states have internal predecessors, (953), 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) [2021-11-02 22:29:35,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 953 transitions. [2021-11-02 22:29:35,134 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 953 transitions. Word has length 36 [2021-11-02 22:29:35,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:35,135 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 953 transitions. [2021-11-02 22:29:35,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 24 states have internal predecessors, (71), 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) [2021-11-02 22:29:35,135 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 953 transitions. [2021-11-02 22:29:35,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 22:29:35,136 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:35,136 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1] [2021-11-02 22:29:35,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:35,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-02 22:29:35,353 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:35,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:35,355 INFO L85 PathProgramCache]: Analyzing trace with hash 63358690, now seen corresponding path program 5 times [2021-11-02 22:29:35,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:35,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853901218] [2021-11-02 22:29:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:35,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:35,495 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:35,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:35,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853901218] [2021-11-02 22:29:35,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853901218] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:35,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408715965] [2021-11-02 22:29:35,495 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:29:35,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:35,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:35,496 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:35,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-02 22:29:35,744 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-02 22:29:35,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:35,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 22:29:35,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:36,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408715965] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:36,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:36,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2021-11-02 22:29:36,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762887276] [2021-11-02 22:29:36,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-02 22:29:36,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:36,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-02 22:29:36,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2021-11-02 22:29:36,164 INFO L87 Difference]: Start difference. First operand 798 states and 953 transitions. Second operand has 26 states, 25 states have (on average 2.92) internal successors, (73), 26 states have internal predecessors, (73), 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) [2021-11-02 22:29:36,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:36,859 INFO L93 Difference]: Finished difference Result 1091 states and 1285 transitions. [2021-11-02 22:29:36,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-02 22:29:36,859 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.92) internal successors, (73), 26 states have internal predecessors, (73), 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 37 [2021-11-02 22:29:36,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:36,863 INFO L225 Difference]: With dead ends: 1091 [2021-11-02 22:29:36,863 INFO L226 Difference]: Without dead ends: 1090 [2021-11-02 22:29:36,864 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=432, Invalid=1290, Unknown=0, NotChecked=0, Total=1722 [2021-11-02 22:29:36,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2021-11-02 22:29:37,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 826. [2021-11-02 22:29:37,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 824 states have (on average 1.1966019417475728) internal successors, (986), 825 states have internal predecessors, (986), 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) [2021-11-02 22:29:37,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 986 transitions. [2021-11-02 22:29:37,009 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 986 transitions. Word has length 37 [2021-11-02 22:29:37,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:37,010 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 986 transitions. [2021-11-02 22:29:37,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.92) internal successors, (73), 26 states have internal predecessors, (73), 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) [2021-11-02 22:29:37,010 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 986 transitions. [2021-11-02 22:29:37,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 22:29:37,011 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:37,011 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:37,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:37,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-02 22:29:37,239 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:37,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:37,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1963945012, now seen corresponding path program 5 times [2021-11-02 22:29:37,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:37,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615464039] [2021-11-02 22:29:37,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:37,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:37,326 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:37,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:37,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615464039] [2021-11-02 22:29:37,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615464039] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:37,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701555442] [2021-11-02 22:29:37,328 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:29:37,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:37,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:37,329 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:37,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-02 22:29:37,612 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-11-02 22:29:37,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:37,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:29:37,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:37,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701555442] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:37,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:37,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-11-02 22:29:37,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065494068] [2021-11-02 22:29:37,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:29:37,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:37,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:29:37,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:29:37,701 INFO L87 Difference]: Start difference. First operand 826 states and 986 transitions. Second operand has 9 states, 8 states have (on average 4.625) internal successors, (37), 9 states have internal predecessors, (37), 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) [2021-11-02 22:29:37,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:37,891 INFO L93 Difference]: Finished difference Result 1189 states and 1425 transitions. [2021-11-02 22:29:37,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:29:37,896 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 9 states have internal predecessors, (37), 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 37 [2021-11-02 22:29:37,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:37,901 INFO L225 Difference]: With dead ends: 1189 [2021-11-02 22:29:37,901 INFO L226 Difference]: Without dead ends: 1188 [2021-11-02 22:29:37,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:29:37,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2021-11-02 22:29:38,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 883. [2021-11-02 22:29:38,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.1975028376844494) internal successors, (1055), 882 states have internal predecessors, (1055), 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) [2021-11-02 22:29:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1055 transitions. [2021-11-02 22:29:38,008 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1055 transitions. Word has length 37 [2021-11-02 22:29:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:38,008 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1055 transitions. [2021-11-02 22:29:38,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 9 states have internal predecessors, (37), 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) [2021-11-02 22:29:38,008 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1055 transitions. [2021-11-02 22:29:38,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:29:38,009 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:38,009 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-02 22:29:38,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-02 22:29:38,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-02 22:29:38,210 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:38,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:38,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1525998326, now seen corresponding path program 8 times [2021-11-02 22:29:38,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:38,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452820653] [2021-11-02 22:29:38,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:38,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:38,334 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:38,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:38,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452820653] [2021-11-02 22:29:38,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452820653] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:38,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553390401] [2021-11-02 22:29:38,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:29:38,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:38,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:38,336 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:38,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-02 22:29:38,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:29:38,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:38,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-02 22:29:38,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:38,969 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:38,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553390401] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:38,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:38,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 24 [2021-11-02 22:29:38,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275448281] [2021-11-02 22:29:38,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-02 22:29:38,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:38,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-02 22:29:38,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2021-11-02 22:29:38,971 INFO L87 Difference]: Start difference. First operand 883 states and 1055 transitions. Second operand has 25 states, 24 states have (on average 3.125) internal successors, (75), 25 states have internal predecessors, (75), 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) [2021-11-02 22:29:42,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:42,121 INFO L93 Difference]: Finished difference Result 2655 states and 3097 transitions. [2021-11-02 22:29:42,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2021-11-02 22:29:42,121 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.125) internal successors, (75), 25 states have internal predecessors, (75), 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 38 [2021-11-02 22:29:42,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:42,132 INFO L225 Difference]: With dead ends: 2655 [2021-11-02 22:29:42,132 INFO L226 Difference]: Without dead ends: 2654 [2021-11-02 22:29:42,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8952 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3967, Invalid=17789, Unknown=0, NotChecked=0, Total=21756 [2021-11-02 22:29:42,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2021-11-02 22:29:42,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 960. [2021-11-02 22:29:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 958 states have (on average 1.196242171189979) internal successors, (1146), 959 states have internal predecessors, (1146), 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) [2021-11-02 22:29:42,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1146 transitions. [2021-11-02 22:29:42,271 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1146 transitions. Word has length 38 [2021-11-02 22:29:42,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:42,271 INFO L470 AbstractCegarLoop]: Abstraction has 960 states and 1146 transitions. [2021-11-02 22:29:42,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.125) internal successors, (75), 25 states have internal predecessors, (75), 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) [2021-11-02 22:29:42,272 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1146 transitions. [2021-11-02 22:29:42,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-02 22:29:42,273 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:42,273 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2021-11-02 22:29:42,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:42,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:42,475 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:42,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:42,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1200619203, now seen corresponding path program 9 times [2021-11-02 22:29:42,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:42,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311375079] [2021-11-02 22:29:42,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:42,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:42,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:42,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311375079] [2021-11-02 22:29:42,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311375079] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:42,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272913748] [2021-11-02 22:29:42,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:29:42,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:42,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:42,599 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:42,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-02 22:29:42,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-02 22:29:42,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:42,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-02 22:29:42,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:43,266 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:43,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272913748] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:43,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:43,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-11-02 22:29:43,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049690591] [2021-11-02 22:29:43,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:29:43,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:43,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:29:43,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:29:43,268 INFO L87 Difference]: Start difference. First operand 960 states and 1146 transitions. Second operand has 28 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 28 states have internal predecessors, (77), 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) [2021-11-02 22:29:46,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:46,701 INFO L93 Difference]: Finished difference Result 2885 states and 3364 transitions. [2021-11-02 22:29:46,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2021-11-02 22:29:46,702 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 28 states have internal predecessors, (77), 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 39 [2021-11-02 22:29:46,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:46,715 INFO L225 Difference]: With dead ends: 2885 [2021-11-02 22:29:46,715 INFO L226 Difference]: Without dead ends: 2884 [2021-11-02 22:29:46,720 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11849 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=5051, Invalid=22671, Unknown=0, NotChecked=0, Total=27722 [2021-11-02 22:29:46,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2021-11-02 22:29:46,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1529. [2021-11-02 22:29:46,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1527 states have (on average 1.194499017681729) internal successors, (1824), 1528 states have internal predecessors, (1824), 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) [2021-11-02 22:29:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 1824 transitions. [2021-11-02 22:29:46,997 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 1824 transitions. Word has length 39 [2021-11-02 22:29:46,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:46,997 INFO L470 AbstractCegarLoop]: Abstraction has 1529 states and 1824 transitions. [2021-11-02 22:29:46,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 28 states have internal predecessors, (77), 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) [2021-11-02 22:29:46,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 1824 transitions. [2021-11-02 22:29:46,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-02 22:29:46,999 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:46,999 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2021-11-02 22:29:47,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:47,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:47,215 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:47,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:47,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1110346912, now seen corresponding path program 10 times [2021-11-02 22:29:47,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:47,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919815637] [2021-11-02 22:29:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:47,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:47,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:47,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919815637] [2021-11-02 22:29:47,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919815637] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:47,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446509035] [2021-11-02 22:29:47,326 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:29:47,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:47,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:47,327 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:47,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-02 22:29:47,787 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:29:47,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:47,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-02 22:29:47,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:48,160 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:48,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446509035] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:48,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:48,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-11-02 22:29:48,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937131203] [2021-11-02 22:29:48,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:29:48,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:48,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:29:48,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:29:48,163 INFO L87 Difference]: Start difference. First operand 1529 states and 1824 transitions. Second operand has 28 states, 27 states have (on average 2.925925925925926) internal successors, (79), 28 states have internal predecessors, (79), 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) [2021-11-02 22:29:50,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:50,023 INFO L93 Difference]: Finished difference Result 2127 states and 2506 transitions. [2021-11-02 22:29:50,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-02 22:29:50,023 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.925925925925926) internal successors, (79), 28 states have internal predecessors, (79), 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 40 [2021-11-02 22:29:50,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:50,030 INFO L225 Difference]: With dead ends: 2127 [2021-11-02 22:29:50,031 INFO L226 Difference]: Without dead ends: 2126 [2021-11-02 22:29:50,033 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2549 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1908, Invalid=6282, Unknown=0, NotChecked=0, Total=8190 [2021-11-02 22:29:50,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2021-11-02 22:29:50,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1643. [2021-11-02 22:29:50,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1641 states have (on average 1.193784277879342) internal successors, (1959), 1642 states have internal predecessors, (1959), 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) [2021-11-02 22:29:50,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 1959 transitions. [2021-11-02 22:29:50,362 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 1959 transitions. Word has length 40 [2021-11-02 22:29:50,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:50,362 INFO L470 AbstractCegarLoop]: Abstraction has 1643 states and 1959 transitions. [2021-11-02 22:29:50,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.925925925925926) internal successors, (79), 28 states have internal predecessors, (79), 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) [2021-11-02 22:29:50,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 1959 transitions. [2021-11-02 22:29:50,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-02 22:29:50,364 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:50,364 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:50,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:50,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:50,584 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:50,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:50,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2077280074, now seen corresponding path program 11 times [2021-11-02 22:29:50,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:50,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410299039] [2021-11-02 22:29:50,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:50,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:50,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:50,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410299039] [2021-11-02 22:29:50,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410299039] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:50,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663656893] [2021-11-02 22:29:50,729 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:29:50,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:50,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:50,730 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:50,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-02 22:29:51,087 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-02 22:29:51,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:51,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-02 22:29:51,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:51,459 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:51,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663656893] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:51,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:51,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 27 [2021-11-02 22:29:51,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062781959] [2021-11-02 22:29:51,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:29:51,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:51,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:29:51,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:29:51,460 INFO L87 Difference]: Start difference. First operand 1643 states and 1959 transitions. Second operand has 28 states, 27 states have (on average 3.074074074074074) internal successors, (83), 28 states have internal predecessors, (83), 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) [2021-11-02 22:29:54,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:54,378 INFO L93 Difference]: Finished difference Result 2147 states and 2531 transitions. [2021-11-02 22:29:54,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-11-02 22:29:54,379 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.074074074074074) internal successors, (83), 28 states have internal predecessors, (83), 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 42 [2021-11-02 22:29:54,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:54,386 INFO L225 Difference]: With dead ends: 2147 [2021-11-02 22:29:54,386 INFO L226 Difference]: Without dead ends: 2146 [2021-11-02 22:29:54,388 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6083 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2986, Invalid=12764, Unknown=0, NotChecked=0, Total=15750 [2021-11-02 22:29:54,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2021-11-02 22:29:54,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1655. [2021-11-02 22:29:54,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1653 states have (on average 1.1935874168179068) internal successors, (1973), 1654 states have internal predecessors, (1973), 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) [2021-11-02 22:29:54,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 1973 transitions. [2021-11-02 22:29:54,616 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 1973 transitions. Word has length 42 [2021-11-02 22:29:54,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:54,617 INFO L470 AbstractCegarLoop]: Abstraction has 1655 states and 1973 transitions. [2021-11-02 22:29:54,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.074074074074074) internal successors, (83), 28 states have internal predecessors, (83), 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) [2021-11-02 22:29:54,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 1973 transitions. [2021-11-02 22:29:54,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-02 22:29:54,618 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:54,618 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:54,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:54,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:54,848 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:54,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:54,850 INFO L85 PathProgramCache]: Analyzing trace with hash 49976372, now seen corresponding path program 6 times [2021-11-02 22:29:54,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:54,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355123112] [2021-11-02 22:29:54,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:54,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:54,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:54,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355123112] [2021-11-02 22:29:54,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355123112] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:54,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247246609] [2021-11-02 22:29:54,937 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:29:54,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:54,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:54,943 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:54,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-02 22:29:55,312 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-11-02 22:29:55,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:55,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 22:29:55,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:55,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247246609] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:55,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:55,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-11-02 22:29:55,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853338567] [2021-11-02 22:29:55,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:29:55,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:55,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:29:55,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:29:55,423 INFO L87 Difference]: Start difference. First operand 1655 states and 1973 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 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) [2021-11-02 22:29:55,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:55,766 INFO L93 Difference]: Finished difference Result 2686 states and 3240 transitions. [2021-11-02 22:29:55,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:29:55,767 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 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 42 [2021-11-02 22:29:55,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:55,779 INFO L225 Difference]: With dead ends: 2686 [2021-11-02 22:29:55,779 INFO L226 Difference]: Without dead ends: 2685 [2021-11-02 22:29:55,780 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:29:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2021-11-02 22:29:56,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 1825. [2021-11-02 22:29:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1823 states have (on average 1.192539769610532) internal successors, (2174), 1824 states have internal predecessors, (2174), 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) [2021-11-02 22:29:56,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2174 transitions. [2021-11-02 22:29:56,041 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2174 transitions. Word has length 42 [2021-11-02 22:29:56,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:56,042 INFO L470 AbstractCegarLoop]: Abstraction has 1825 states and 2174 transitions. [2021-11-02 22:29:56,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 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) [2021-11-02 22:29:56,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2174 transitions. [2021-11-02 22:29:56,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-02 22:29:56,043 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:56,044 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1] [2021-11-02 22:29:56,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-02 22:29:56,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-02 22:29:56,260 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:56,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:56,261 INFO L85 PathProgramCache]: Analyzing trace with hash -671758313, now seen corresponding path program 6 times [2021-11-02 22:29:56,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:56,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958612174] [2021-11-02 22:29:56,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:56,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:56,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:56,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958612174] [2021-11-02 22:29:56,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958612174] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:56,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885730317] [2021-11-02 22:29:56,424 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:29:56,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:56,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:56,426 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:56,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-02 22:29:56,807 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-02 22:29:56,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:56,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-02 22:29:56,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:57,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885730317] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:57,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:57,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2021-11-02 22:29:57,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961961572] [2021-11-02 22:29:57,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-02 22:29:57,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:57,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-02 22:29:57,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2021-11-02 22:29:57,228 INFO L87 Difference]: Start difference. First operand 1825 states and 2174 transitions. Second operand has 30 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 30 states have internal predecessors, (85), 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) [2021-11-02 22:29:58,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:58,249 INFO L93 Difference]: Finished difference Result 2206 states and 2606 transitions. [2021-11-02 22:29:58,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-02 22:29:58,250 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 30 states have internal predecessors, (85), 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 43 [2021-11-02 22:29:58,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:58,254 INFO L225 Difference]: With dead ends: 2206 [2021-11-02 22:29:58,254 INFO L226 Difference]: Without dead ends: 2205 [2021-11-02 22:29:58,255 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=600, Invalid=1850, Unknown=0, NotChecked=0, Total=2450 [2021-11-02 22:29:58,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2021-11-02 22:29:58,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 1853. [2021-11-02 22:29:58,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1851 states have (on average 1.1923284710967046) internal successors, (2207), 1852 states have internal predecessors, (2207), 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) [2021-11-02 22:29:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 2207 transitions. [2021-11-02 22:29:58,510 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 2207 transitions. Word has length 43 [2021-11-02 22:29:58,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:58,510 INFO L470 AbstractCegarLoop]: Abstraction has 1853 states and 2207 transitions. [2021-11-02 22:29:58,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.9310344827586206) internal successors, (85), 30 states have internal predecessors, (85), 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) [2021-11-02 22:29:58,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 2207 transitions. [2021-11-02 22:29:58,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-02 22:29:58,511 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:58,512 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-02 22:29:58,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-11-02 22:29:58,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-02 22:29:58,713 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:29:58,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:58,714 INFO L85 PathProgramCache]: Analyzing trace with hash -466948210, now seen corresponding path program 12 times [2021-11-02 22:29:58,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:58,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332485773] [2021-11-02 22:29:58,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:58,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:58,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:58,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332485773] [2021-11-02 22:29:58,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332485773] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:58,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494471326] [2021-11-02 22:29:58,835 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:29:58,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:58,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:58,837 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:58,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-02 22:29:59,232 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-11-02 22:29:59,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:59,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 22:29:59,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:59,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494471326] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:59,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:59,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2021-11-02 22:29:59,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247586967] [2021-11-02 22:29:59,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 22:29:59,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:59,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 22:29:59,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:29:59,508 INFO L87 Difference]: Start difference. First operand 1853 states and 2207 transitions. Second operand has 22 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 22 states have internal predecessors, (85), 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) [2021-11-02 22:30:01,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:01,161 INFO L93 Difference]: Finished difference Result 4591 states and 5357 transitions. [2021-11-02 22:30:01,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-11-02 22:30:01,162 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 22 states have internal predecessors, (85), 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 43 [2021-11-02 22:30:01,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:01,167 INFO L225 Difference]: With dead ends: 4591 [2021-11-02 22:30:01,167 INFO L226 Difference]: Without dead ends: 4590 [2021-11-02 22:30:01,168 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4347 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2271, Invalid=8235, Unknown=0, NotChecked=0, Total=10506 [2021-11-02 22:30:01,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4590 states. [2021-11-02 22:30:01,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4590 to 2332. [2021-11-02 22:30:01,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2332 states, 2330 states have (on average 1.1927038626609443) internal successors, (2779), 2331 states have internal predecessors, (2779), 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) [2021-11-02 22:30:01,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 2779 transitions. [2021-11-02 22:30:01,473 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 2779 transitions. Word has length 43 [2021-11-02 22:30:01,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:01,473 INFO L470 AbstractCegarLoop]: Abstraction has 2332 states and 2779 transitions. [2021-11-02 22:30:01,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 22 states have internal predecessors, (85), 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) [2021-11-02 22:30:01,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 2779 transitions. [2021-11-02 22:30:01,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-02 22:30:01,474 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:01,475 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2021-11-02 22:30:01,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-02 22:30:01,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:01,680 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:30:01,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:01,681 INFO L85 PathProgramCache]: Analyzing trace with hash -451181269, now seen corresponding path program 13 times [2021-11-02 22:30:01,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:01,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053691962] [2021-11-02 22:30:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:01,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:01,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:01,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053691962] [2021-11-02 22:30:01,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053691962] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:01,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611273734] [2021-11-02 22:30:01,839 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:30:01,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:01,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:01,847 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:01,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-02 22:30:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:02,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-02 22:30:02,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:02,848 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:02,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611273734] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:02,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:02,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2021-11-02 22:30:02,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255071523] [2021-11-02 22:30:02,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-02 22:30:02,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:02,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-02 22:30:02,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2021-11-02 22:30:02,850 INFO L87 Difference]: Start difference. First operand 2332 states and 2779 transitions. Second operand has 32 states, 31 states have (on average 2.806451612903226) internal successors, (87), 32 states have internal predecessors, (87), 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) [2021-11-02 22:30:09,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:09,535 INFO L93 Difference]: Finished difference Result 6516 states and 7596 transitions. [2021-11-02 22:30:09,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 261 states. [2021-11-02 22:30:09,536 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.806451612903226) internal successors, (87), 32 states have internal predecessors, (87), 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 44 [2021-11-02 22:30:09,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:09,542 INFO L225 Difference]: With dead ends: 6516 [2021-11-02 22:30:09,543 INFO L226 Difference]: Without dead ends: 6515 [2021-11-02 22:30:09,547 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36498 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=13089, Invalid=64473, Unknown=0, NotChecked=0, Total=77562 [2021-11-02 22:30:09,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6515 states. [2021-11-02 22:30:09,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6515 to 2487. [2021-11-02 22:30:09,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2487 states, 2485 states have (on average 1.1927565392354125) internal successors, (2964), 2486 states have internal predecessors, (2964), 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) [2021-11-02 22:30:09,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 2964 transitions. [2021-11-02 22:30:09,986 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 2964 transitions. Word has length 44 [2021-11-02 22:30:09,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:09,986 INFO L470 AbstractCegarLoop]: Abstraction has 2487 states and 2964 transitions. [2021-11-02 22:30:09,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.806451612903226) internal successors, (87), 32 states have internal predecessors, (87), 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) [2021-11-02 22:30:09,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 2964 transitions. [2021-11-02 22:30:09,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-02 22:30:09,987 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:09,987 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1] [2021-11-02 22:30:10,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-11-02 22:30:10,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-02 22:30:10,191 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:30:10,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:10,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1444139832, now seen corresponding path program 14 times [2021-11-02 22:30:10,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:10,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230958686] [2021-11-02 22:30:10,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:10,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:10,337 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:10,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:10,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230958686] [2021-11-02 22:30:10,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230958686] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:10,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034174200] [2021-11-02 22:30:10,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:30:10,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:10,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:10,339 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:10,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-02 22:30:10,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:30:10,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:30:10,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-02 22:30:10,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:11,218 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:11,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034174200] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:11,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:11,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2021-11-02 22:30:11,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917149197] [2021-11-02 22:30:11,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-02 22:30:11,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:11,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-02 22:30:11,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2021-11-02 22:30:11,220 INFO L87 Difference]: Start difference. First operand 2487 states and 2964 transitions. Second operand has 32 states, 31 states have (on average 2.870967741935484) internal successors, (89), 32 states have internal predecessors, (89), 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) [2021-11-02 22:30:17,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:17,141 INFO L93 Difference]: Finished difference Result 4718 states and 5518 transitions. [2021-11-02 22:30:17,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2021-11-02 22:30:17,141 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.870967741935484) internal successors, (89), 32 states have internal predecessors, (89), 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 45 [2021-11-02 22:30:17,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:17,148 INFO L225 Difference]: With dead ends: 4718 [2021-11-02 22:30:17,148 INFO L226 Difference]: Without dead ends: 4717 [2021-11-02 22:30:17,153 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27394 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=10778, Invalid=48514, Unknown=0, NotChecked=0, Total=59292 [2021-11-02 22:30:17,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4717 states. [2021-11-02 22:30:17,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4717 to 2687. [2021-11-02 22:30:17,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2687 states, 2685 states have (on average 1.1906890130353818) internal successors, (3197), 2686 states have internal predecessors, (3197), 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) [2021-11-02 22:30:17,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2687 states to 2687 states and 3197 transitions. [2021-11-02 22:30:17,662 INFO L78 Accepts]: Start accepts. Automaton has 2687 states and 3197 transitions. Word has length 45 [2021-11-02 22:30:17,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:17,663 INFO L470 AbstractCegarLoop]: Abstraction has 2687 states and 3197 transitions. [2021-11-02 22:30:17,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.870967741935484) internal successors, (89), 32 states have internal predecessors, (89), 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) [2021-11-02 22:30:17,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2687 states and 3197 transitions. [2021-11-02 22:30:17,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 22:30:17,697 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:17,698 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1] [2021-11-02 22:30:17,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-02 22:30:17,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-02 22:30:17,899 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:30:17,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:17,900 INFO L85 PathProgramCache]: Analyzing trace with hash -610941099, now seen corresponding path program 15 times [2021-11-02 22:30:17,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:17,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167988989] [2021-11-02 22:30:17,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:17,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:18,057 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:18,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:18,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167988989] [2021-11-02 22:30:18,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167988989] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:18,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640447764] [2021-11-02 22:30:18,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:30:18,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:18,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:18,063 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:18,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-02 22:30:18,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-02 22:30:18,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:30:18,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-02 22:30:18,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:18,968 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:18,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640447764] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:18,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:18,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2021-11-02 22:30:18,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480368942] [2021-11-02 22:30:18,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-02 22:30:18,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:18,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-02 22:30:18,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2021-11-02 22:30:18,970 INFO L87 Difference]: Start difference. First operand 2687 states and 3197 transitions. Second operand has 31 states, 30 states have (on average 3.033333333333333) internal successors, (91), 31 states have internal predecessors, (91), 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) [2021-11-02 22:30:23,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:23,927 INFO L93 Difference]: Finished difference Result 5592 states and 6539 transitions. [2021-11-02 22:30:23,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2021-11-02 22:30:23,928 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.033333333333333) internal successors, (91), 31 states have internal predecessors, (91), 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 46 [2021-11-02 22:30:23,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:23,936 INFO L225 Difference]: With dead ends: 5592 [2021-11-02 22:30:23,936 INFO L226 Difference]: Without dead ends: 5591 [2021-11-02 22:30:23,940 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16293 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=6798, Invalid=29874, Unknown=0, NotChecked=0, Total=36672 [2021-11-02 22:30:23,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5591 states. [2021-11-02 22:30:24,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5591 to 3211. [2021-11-02 22:30:24,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3211 states, 3209 states have (on average 1.1894671237145529) internal successors, (3817), 3210 states have internal predecessors, (3817), 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) [2021-11-02 22:30:24,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3211 states to 3211 states and 3817 transitions. [2021-11-02 22:30:24,691 INFO L78 Accepts]: Start accepts. Automaton has 3211 states and 3817 transitions. Word has length 46 [2021-11-02 22:30:24,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:24,692 INFO L470 AbstractCegarLoop]: Abstraction has 3211 states and 3817 transitions. [2021-11-02 22:30:24,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.033333333333333) internal successors, (91), 31 states have internal predecessors, (91), 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) [2021-11-02 22:30:24,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3211 states and 3817 transitions. [2021-11-02 22:30:24,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 22:30:24,694 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:24,695 INFO L513 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2021-11-02 22:30:24,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-02 22:30:24,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-02 22:30:24,912 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:30:24,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:24,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1297574708, now seen corresponding path program 7 times [2021-11-02 22:30:24,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:24,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521521404] [2021-11-02 22:30:24,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:24,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:25,012 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:25,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:25,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521521404] [2021-11-02 22:30:25,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521521404] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:25,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195588633] [2021-11-02 22:30:25,013 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:30:25,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:25,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:25,019 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:25,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-02 22:30:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:25,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 22:30:25,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:25,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195588633] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:25,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:25,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-11-02 22:30:25,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663797260] [2021-11-02 22:30:25,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:30:25,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:25,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:30:25,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:30:25,627 INFO L87 Difference]: Start difference. First operand 3211 states and 3817 transitions. Second operand has 11 states, 10 states have (on average 4.7) internal successors, (47), 11 states have internal predecessors, (47), 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) [2021-11-02 22:30:26,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:26,400 INFO L93 Difference]: Finished difference Result 4935 states and 5945 transitions. [2021-11-02 22:30:26,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:30:26,401 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 11 states have internal predecessors, (47), 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 47 [2021-11-02 22:30:26,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:26,407 INFO L225 Difference]: With dead ends: 4935 [2021-11-02 22:30:26,407 INFO L226 Difference]: Without dead ends: 4934 [2021-11-02 22:30:26,409 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:30:26,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4934 states. [2021-11-02 22:30:27,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4934 to 3540. [2021-11-02 22:30:27,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3540 states, 3538 states have (on average 1.1885245901639345) internal successors, (4205), 3539 states have internal predecessors, (4205), 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) [2021-11-02 22:30:27,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 4205 transitions. [2021-11-02 22:30:27,123 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 4205 transitions. Word has length 47 [2021-11-02 22:30:27,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:27,123 INFO L470 AbstractCegarLoop]: Abstraction has 3540 states and 4205 transitions. [2021-11-02 22:30:27,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 11 states have internal predecessors, (47), 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) [2021-11-02 22:30:27,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 4205 transitions. [2021-11-02 22:30:27,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-02 22:30:27,125 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:27,125 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:30:27,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-02 22:30:27,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-02 22:30:27,352 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:30:27,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:27,353 INFO L85 PathProgramCache]: Analyzing trace with hash 503831167, now seen corresponding path program 16 times [2021-11-02 22:30:27,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:27,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466123433] [2021-11-02 22:30:27,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:27,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:27,530 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:27,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:27,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466123433] [2021-11-02 22:30:27,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466123433] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:27,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512914522] [2021-11-02 22:30:27,531 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:30:27,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:27,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:27,532 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:27,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-02 22:30:28,039 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:30:28,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:30:28,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 22:30:28,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:28,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512914522] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:28,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:28,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 31 [2021-11-02 22:30:28,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30428955] [2021-11-02 22:30:28,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-02 22:30:28,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:28,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-02 22:30:28,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2021-11-02 22:30:28,505 INFO L87 Difference]: Start difference. First operand 3540 states and 4205 transitions. Second operand has 32 states, 31 states have (on average 3.064516129032258) internal successors, (95), 32 states have internal predecessors, (95), 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) [2021-11-02 22:30:33,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:33,070 INFO L93 Difference]: Finished difference Result 4189 states and 4942 transitions. [2021-11-02 22:30:33,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-11-02 22:30:33,071 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.064516129032258) internal successors, (95), 32 states have internal predecessors, (95), 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 48 [2021-11-02 22:30:33,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:33,075 INFO L225 Difference]: With dead ends: 4189 [2021-11-02 22:30:33,075 INFO L226 Difference]: Without dead ends: 4188 [2021-11-02 22:30:33,077 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9962 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4494, Invalid=20312, Unknown=0, NotChecked=0, Total=24806 [2021-11-02 22:30:33,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2021-11-02 22:30:33,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 3564. [2021-11-02 22:30:33,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 3562 states have (on average 1.1883773161145423) internal successors, (4233), 3563 states have internal predecessors, (4233), 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) [2021-11-02 22:30:33,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 4233 transitions. [2021-11-02 22:30:33,766 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 4233 transitions. Word has length 48 [2021-11-02 22:30:33,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:33,766 INFO L470 AbstractCegarLoop]: Abstraction has 3564 states and 4233 transitions. [2021-11-02 22:30:33,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.064516129032258) internal successors, (95), 32 states have internal predecessors, (95), 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) [2021-11-02 22:30:33,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 4233 transitions. [2021-11-02 22:30:33,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-02 22:30:33,769 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:33,769 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-02 22:30:33,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-11-02 22:30:33,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:33,992 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:30:33,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:33,994 INFO L85 PathProgramCache]: Analyzing trace with hash 708641270, now seen corresponding path program 17 times [2021-11-02 22:30:33,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:33,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428061516] [2021-11-02 22:30:33,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:33,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:34,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:34,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428061516] [2021-11-02 22:30:34,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428061516] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:34,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304626026] [2021-11-02 22:30:34,138 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:30:34,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:34,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:34,139 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:34,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-02 22:30:34,787 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-11-02 22:30:34,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:30:34,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-02 22:30:34,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:35,201 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:35,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304626026] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:35,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:35,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 30 [2021-11-02 22:30:35,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140212766] [2021-11-02 22:30:35,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-02 22:30:35,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:35,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-02 22:30:35,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2021-11-02 22:30:35,203 INFO L87 Difference]: Start difference. First operand 3564 states and 4233 transitions. Second operand has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 31 states have internal predecessors, (95), 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) [2021-11-02 22:30:42,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:42,349 INFO L93 Difference]: Finished difference Result 10308 states and 12022 transitions. [2021-11-02 22:30:42,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2021-11-02 22:30:42,350 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 31 states have internal predecessors, (95), 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 48 [2021-11-02 22:30:42,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:42,356 INFO L225 Difference]: With dead ends: 10308 [2021-11-02 22:30:42,356 INFO L226 Difference]: Without dead ends: 10307 [2021-11-02 22:30:42,362 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27249 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=10171, Invalid=52579, Unknown=0, NotChecked=0, Total=62750 [2021-11-02 22:30:42,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10307 states. [2021-11-02 22:30:43,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10307 to 3638. [2021-11-02 22:30:43,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3636 states have (on average 1.1886688668866887) internal successors, (4322), 3637 states have internal predecessors, (4322), 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) [2021-11-02 22:30:43,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 4322 transitions. [2021-11-02 22:30:43,065 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 4322 transitions. Word has length 48 [2021-11-02 22:30:43,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:43,066 INFO L470 AbstractCegarLoop]: Abstraction has 3638 states and 4322 transitions. [2021-11-02 22:30:43,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 31 states have internal predecessors, (95), 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) [2021-11-02 22:30:43,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 4322 transitions. [2021-11-02 22:30:43,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-02 22:30:43,068 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:43,068 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1] [2021-11-02 22:30:43,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-11-02 22:30:43,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:43,280 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:30:43,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:43,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1724534156, now seen corresponding path program 7 times [2021-11-02 22:30:43,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:43,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061300534] [2021-11-02 22:30:43,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:43,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:43,513 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:43,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:43,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061300534] [2021-11-02 22:30:43,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061300534] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:43,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239242624] [2021-11-02 22:30:43,514 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:30:43,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:43,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:43,519 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:43,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-02 22:30:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:44,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-02 22:30:44,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:44,812 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:44,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239242624] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:44,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:44,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2021-11-02 22:30:44,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366346550] [2021-11-02 22:30:44,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 22:30:44,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:44,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 22:30:44,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=912, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 22:30:44,814 INFO L87 Difference]: Start difference. First operand 3638 states and 4322 transitions. Second operand has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 34 states have internal predecessors, (97), 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) [2021-11-02 22:30:46,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:46,561 INFO L93 Difference]: Finished difference Result 4030 states and 4768 transitions. [2021-11-02 22:30:46,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-02 22:30:46,561 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 34 states have internal predecessors, (97), 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 49 [2021-11-02 22:30:46,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:46,565 INFO L225 Difference]: With dead ends: 4030 [2021-11-02 22:30:46,565 INFO L226 Difference]: Without dead ends: 4029 [2021-11-02 22:30:46,566 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=795, Invalid=2511, Unknown=0, NotChecked=0, Total=3306 [2021-11-02 22:30:46,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4029 states. [2021-11-02 22:30:47,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4029 to 3666. [2021-11-02 22:30:47,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3664 states have (on average 1.1885917030567685) internal successors, (4355), 3665 states have internal predecessors, (4355), 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) [2021-11-02 22:30:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 4355 transitions. [2021-11-02 22:30:47,257 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 4355 transitions. Word has length 49 [2021-11-02 22:30:47,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:47,257 INFO L470 AbstractCegarLoop]: Abstraction has 3666 states and 4355 transitions. [2021-11-02 22:30:47,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 34 states have internal predecessors, (97), 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) [2021-11-02 22:30:47,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 4355 transitions. [2021-11-02 22:30:47,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-02 22:30:47,259 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:47,260 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2021-11-02 22:30:47,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-02 22:30:47,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-11-02 22:30:47,461 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:30:47,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:47,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1632354243, now seen corresponding path program 18 times [2021-11-02 22:30:47,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:47,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144736468] [2021-11-02 22:30:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:47,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:47,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:47,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144736468] [2021-11-02 22:30:47,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144736468] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:47,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456166910] [2021-11-02 22:30:47,622 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:30:47,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:47,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:47,627 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:47,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-02 22:30:48,449 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-11-02 22:30:48,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:30:48,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 22:30:48,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:48,860 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:48,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456166910] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:48,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:48,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12] total 29 [2021-11-02 22:30:48,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494448887] [2021-11-02 22:30:48,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-02 22:30:48,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:48,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-02 22:30:48,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2021-11-02 22:30:48,862 INFO L87 Difference]: Start difference. First operand 3666 states and 4355 transitions. Second operand has 30 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 30 states have internal predecessors, (97), 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) [2021-11-02 22:30:54,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:54,864 INFO L93 Difference]: Finished difference Result 12647 states and 14727 transitions. [2021-11-02 22:30:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2021-11-02 22:30:54,864 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 30 states have internal predecessors, (97), 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 49 [2021-11-02 22:30:54,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:54,873 INFO L225 Difference]: With dead ends: 12647 [2021-11-02 22:30:54,873 INFO L226 Difference]: Without dead ends: 12646 [2021-11-02 22:30:54,879 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23503 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=9336, Invalid=40616, Unknown=0, NotChecked=0, Total=49952 [2021-11-02 22:30:54,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12646 states. [2021-11-02 22:30:55,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12646 to 4437. [2021-11-02 22:30:55,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4437 states, 4435 states have (on average 1.1882750845546788) internal successors, (5270), 4436 states have internal predecessors, (5270), 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) [2021-11-02 22:30:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4437 states to 4437 states and 5270 transitions. [2021-11-02 22:30:55,912 INFO L78 Accepts]: Start accepts. Automaton has 4437 states and 5270 transitions. Word has length 49 [2021-11-02 22:30:55,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:55,912 INFO L470 AbstractCegarLoop]: Abstraction has 4437 states and 5270 transitions. [2021-11-02 22:30:55,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 30 states have internal predecessors, (97), 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) [2021-11-02 22:30:55,913 INFO L276 IsEmpty]: Start isEmpty. Operand 4437 states and 5270 transitions. [2021-11-02 22:30:55,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-02 22:30:55,915 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:55,915 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 1, 1, 1] [2021-11-02 22:30:55,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-02 22:30:56,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-11-02 22:30:56,130 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:30:56,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:56,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1609231264, now seen corresponding path program 19 times [2021-11-02 22:30:56,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:56,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291041253] [2021-11-02 22:30:56,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:56,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:56,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:56,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291041253] [2021-11-02 22:30:56,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291041253] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:56,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900849765] [2021-11-02 22:30:56,287 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:30:56,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:56,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:56,288 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:56,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-02 22:30:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:57,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-02 22:30:57,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:57,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900849765] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:57,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:57,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2021-11-02 22:30:57,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465965116] [2021-11-02 22:30:57,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-02 22:30:57,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:57,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-02 22:30:57,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1060, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 22:30:57,537 INFO L87 Difference]: Start difference. First operand 4437 states and 5270 transitions. Second operand has 36 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 36 states have internal predecessors, (99), 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) [2021-11-02 22:31:07,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:31:07,206 INFO L93 Difference]: Finished difference Result 8438 states and 9855 transitions. [2021-11-02 22:31:07,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 300 states. [2021-11-02 22:31:07,207 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 36 states have internal predecessors, (99), 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 50 [2021-11-02 22:31:07,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:31:07,212 INFO L225 Difference]: With dead ends: 8438 [2021-11-02 22:31:07,213 INFO L226 Difference]: Without dead ends: 8437 [2021-11-02 22:31:07,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48124 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=17210, Invalid=84232, Unknown=0, NotChecked=0, Total=101442 [2021-11-02 22:31:07,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8437 states. [2021-11-02 22:31:08,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8437 to 4763. [2021-11-02 22:31:08,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4763 states, 4761 states have (on average 1.187355597563537) internal successors, (5653), 4762 states have internal predecessors, (5653), 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) [2021-11-02 22:31:08,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 5653 transitions. [2021-11-02 22:31:08,424 INFO L78 Accepts]: Start accepts. Automaton has 4763 states and 5653 transitions. Word has length 50 [2021-11-02 22:31:08,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:31:08,424 INFO L470 AbstractCegarLoop]: Abstraction has 4763 states and 5653 transitions. [2021-11-02 22:31:08,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 36 states have internal predecessors, (99), 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) [2021-11-02 22:31:08,425 INFO L276 IsEmpty]: Start isEmpty. Operand 4763 states and 5653 transitions. [2021-11-02 22:31:08,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 22:31:08,427 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:31:08,427 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1] [2021-11-02 22:31:08,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-02 22:31:08,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:08,656 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:31:08,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:31:08,657 INFO L85 PathProgramCache]: Analyzing trace with hash 211925997, now seen corresponding path program 20 times [2021-11-02 22:31:08,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:31:08,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711739553] [2021-11-02 22:31:08,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:31:08,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:31:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:08,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:31:08,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711739553] [2021-11-02 22:31:08,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711739553] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:08,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643562787] [2021-11-02 22:31:08,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:31:08,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:08,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:31:08,827 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:31:08,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-02 22:31:09,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:31:09,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:31:09,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-02 22:31:09,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:31:09,913 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:09,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643562787] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:09,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:31:09,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 31 [2021-11-02 22:31:09,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643554220] [2021-11-02 22:31:09,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-02 22:31:09,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:31:09,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-02 22:31:09,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2021-11-02 22:31:09,914 INFO L87 Difference]: Start difference. First operand 4763 states and 5653 transitions. Second operand has 32 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 32 states have internal predecessors, (101), 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) [2021-11-02 22:31:16,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:31:16,701 INFO L93 Difference]: Finished difference Result 7249 states and 8495 transitions. [2021-11-02 22:31:16,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2021-11-02 22:31:16,702 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 32 states have internal predecessors, (101), 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 51 [2021-11-02 22:31:16,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:31:16,706 INFO L225 Difference]: With dead ends: 7249 [2021-11-02 22:31:16,706 INFO L226 Difference]: Without dead ends: 7248 [2021-11-02 22:31:16,709 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21250 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=8251, Invalid=39491, Unknown=0, NotChecked=0, Total=47742 [2021-11-02 22:31:16,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7248 states. [2021-11-02 22:31:17,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7248 to 4502. [2021-11-02 22:31:17,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4502 states, 4500 states have (on average 1.1875555555555555) internal successors, (5344), 4501 states have internal predecessors, (5344), 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) [2021-11-02 22:31:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 5344 transitions. [2021-11-02 22:31:17,874 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 5344 transitions. Word has length 51 [2021-11-02 22:31:17,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:31:17,874 INFO L470 AbstractCegarLoop]: Abstraction has 4502 states and 5344 transitions. [2021-11-02 22:31:17,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 32 states have internal predecessors, (101), 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) [2021-11-02 22:31:17,875 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 5344 transitions. [2021-11-02 22:31:17,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-02 22:31:17,876 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:31:17,876 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1] [2021-11-02 22:31:17,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-02 22:31:18,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:18,092 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:31:18,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:31:18,093 INFO L85 PathProgramCache]: Analyzing trace with hash 468805194, now seen corresponding path program 21 times [2021-11-02 22:31:18,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:31:18,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216631686] [2021-11-02 22:31:18,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:31:18,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:31:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:18,287 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:18,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:31:18,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216631686] [2021-11-02 22:31:18,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216631686] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:18,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120739659] [2021-11-02 22:31:18,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:31:18,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:18,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:31:18,289 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:31:18,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-02 22:31:18,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-02 22:31:18,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:31:18,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 22:31:18,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:31:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:19,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120739659] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:19,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:31:19,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 32 [2021-11-02 22:31:19,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504342545] [2021-11-02 22:31:19,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-02 22:31:19,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:31:19,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-02 22:31:19,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 22:31:19,492 INFO L87 Difference]: Start difference. First operand 4502 states and 5344 transitions. Second operand has 33 states, 32 states have (on average 3.21875) internal successors, (103), 33 states have internal predecessors, (103), 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) [2021-11-02 22:31:28,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:31:28,745 INFO L93 Difference]: Finished difference Result 6204 states and 7287 transitions. [2021-11-02 22:31:28,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 268 states. [2021-11-02 22:31:28,745 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 3.21875) internal successors, (103), 33 states have internal predecessors, (103), 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 52 [2021-11-02 22:31:28,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:31:28,749 INFO L225 Difference]: With dead ends: 6204 [2021-11-02 22:31:28,750 INFO L226 Difference]: Without dead ends: 6203 [2021-11-02 22:31:28,754 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38155 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=13225, Invalid=68857, Unknown=0, NotChecked=0, Total=82082 [2021-11-02 22:31:28,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6203 states. [2021-11-02 22:31:29,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6203 to 4550. [2021-11-02 22:31:29,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4550 states, 4548 states have (on average 1.1875549692172382) internal successors, (5401), 4549 states have internal predecessors, (5401), 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) [2021-11-02 22:31:29,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4550 states to 4550 states and 5401 transitions. [2021-11-02 22:31:29,972 INFO L78 Accepts]: Start accepts. Automaton has 4550 states and 5401 transitions. Word has length 52 [2021-11-02 22:31:29,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:31:29,973 INFO L470 AbstractCegarLoop]: Abstraction has 4550 states and 5401 transitions. [2021-11-02 22:31:29,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 3.21875) internal successors, (103), 33 states have internal predecessors, (103), 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) [2021-11-02 22:31:29,973 INFO L276 IsEmpty]: Start isEmpty. Operand 4550 states and 5401 transitions. [2021-11-02 22:31:29,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-02 22:31:29,975 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:31:29,975 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2021-11-02 22:31:30,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-02 22:31:30,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:30,204 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:31:30,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:31:30,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1558498508, now seen corresponding path program 8 times [2021-11-02 22:31:30,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:31:30,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394656583] [2021-11-02 22:31:30,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:31:30,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:31:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:30,312 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:30,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:31:30,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394656583] [2021-11-02 22:31:30,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394656583] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:30,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853477886] [2021-11-02 22:31:30,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:31:30,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:30,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:31:30,315 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:31:30,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-02 22:31:31,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:31:31,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:31:31,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 22:31:31,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:31:31,197 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:31,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853477886] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:31,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:31:31,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-11-02 22:31:31,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275440160] [2021-11-02 22:31:31,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 22:31:31,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:31:31,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 22:31:31,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:31:31,198 INFO L87 Difference]: Start difference. First operand 4550 states and 5401 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 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) [2021-11-02 22:31:32,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:31:32,830 INFO L93 Difference]: Finished difference Result 7055 states and 8498 transitions. [2021-11-02 22:31:32,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 22:31:32,830 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 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 52 [2021-11-02 22:31:32,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:31:32,835 INFO L225 Difference]: With dead ends: 7055 [2021-11-02 22:31:32,835 INFO L226 Difference]: Without dead ends: 7054 [2021-11-02 22:31:32,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:31:32,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7054 states. [2021-11-02 22:31:34,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7054 to 4956. [2021-11-02 22:31:34,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4956 states, 4954 states have (on average 1.186717803794913) internal successors, (5879), 4955 states have internal predecessors, (5879), 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) [2021-11-02 22:31:34,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4956 states to 4956 states and 5879 transitions. [2021-11-02 22:31:34,109 INFO L78 Accepts]: Start accepts. Automaton has 4956 states and 5879 transitions. Word has length 52 [2021-11-02 22:31:34,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:31:34,109 INFO L470 AbstractCegarLoop]: Abstraction has 4956 states and 5879 transitions. [2021-11-02 22:31:34,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 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) [2021-11-02 22:31:34,110 INFO L276 IsEmpty]: Start isEmpty. Operand 4956 states and 5879 transitions. [2021-11-02 22:31:34,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 22:31:34,111 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:31:34,111 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-02 22:31:34,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-11-02 22:31:34,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:34,312 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:31:34,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:31:34,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1209938062, now seen corresponding path program 22 times [2021-11-02 22:31:34,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:31:34,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752908031] [2021-11-02 22:31:34,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:31:34,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:31:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:34,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:31:34,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752908031] [2021-11-02 22:31:34,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752908031] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:34,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723833536] [2021-11-02 22:31:34,462 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:31:34,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:34,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:31:34,463 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:31:34,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-02 22:31:35,198 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:31:35,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:31:35,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 22:31:35,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:31:35,541 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:35,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723833536] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:35,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:31:35,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 25 [2021-11-02 22:31:35,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077338809] [2021-11-02 22:31:35,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-02 22:31:35,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:31:35,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-02 22:31:35,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-11-02 22:31:35,542 INFO L87 Difference]: Start difference. First operand 4956 states and 5879 transitions. Second operand has 26 states, 25 states have (on average 4.2) internal successors, (105), 26 states have internal predecessors, (105), 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) [2021-11-02 22:31:39,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:31:39,959 INFO L93 Difference]: Finished difference Result 13311 states and 15486 transitions. [2021-11-02 22:31:39,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-11-02 22:31:39,960 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.2) internal successors, (105), 26 states have internal predecessors, (105), 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 53 [2021-11-02 22:31:39,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:31:39,969 INFO L225 Difference]: With dead ends: 13311 [2021-11-02 22:31:39,969 INFO L226 Difference]: Without dead ends: 13310 [2021-11-02 22:31:39,973 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7718 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3726, Invalid=14096, Unknown=0, NotChecked=0, Total=17822 [2021-11-02 22:31:39,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13310 states. [2021-11-02 22:31:41,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13310 to 7195. [2021-11-02 22:31:41,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7195 states, 7193 states have (on average 1.1875434450159879) internal successors, (8542), 7194 states have internal predecessors, (8542), 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) [2021-11-02 22:31:41,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 8542 transitions. [2021-11-02 22:31:41,895 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 8542 transitions. Word has length 53 [2021-11-02 22:31:41,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:31:41,896 INFO L470 AbstractCegarLoop]: Abstraction has 7195 states and 8542 transitions. [2021-11-02 22:31:41,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.2) internal successors, (105), 26 states have internal predecessors, (105), 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) [2021-11-02 22:31:41,896 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 8542 transitions. [2021-11-02 22:31:41,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 22:31:41,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:31:41,898 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:31:41,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-11-02 22:31:42,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-11-02 22:31:42,104 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:31:42,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:31:42,105 INFO L85 PathProgramCache]: Analyzing trace with hash 84865524, now seen corresponding path program 23 times [2021-11-02 22:31:42,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:31:42,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854616752] [2021-11-02 22:31:42,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:31:42,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:31:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:42,295 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:42,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:31:42,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854616752] [2021-11-02 22:31:42,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854616752] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:42,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700029980] [2021-11-02 22:31:42,296 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:31:42,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:42,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:31:42,297 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:31:42,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-02 22:31:43,043 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-11-02 22:31:43,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:31:43,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-02 22:31:43,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:31:43,603 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:43,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700029980] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:43,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:31:43,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2021-11-02 22:31:43,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154899203] [2021-11-02 22:31:43,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-02 22:31:43,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:31:43,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-02 22:31:43,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1182, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 22:31:43,605 INFO L87 Difference]: Start difference. First operand 7195 states and 8542 transitions. Second operand has 38 states, 37 states have (on average 2.891891891891892) internal successors, (107), 38 states have internal predecessors, (107), 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) [2021-11-02 22:31:59,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:31:59,422 INFO L93 Difference]: Finished difference Result 39382 states and 46051 transitions. [2021-11-02 22:31:59,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-11-02 22:31:59,423 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.891891891891892) internal successors, (107), 38 states have internal predecessors, (107), 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 54 [2021-11-02 22:31:59,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:31:59,456 INFO L225 Difference]: With dead ends: 39382 [2021-11-02 22:31:59,456 INFO L226 Difference]: Without dead ends: 39381 [2021-11-02 22:31:59,462 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7637 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=6718, Invalid=19042, Unknown=0, NotChecked=0, Total=25760 [2021-11-02 22:31:59,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39381 states. [2021-11-02 22:32:07,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39381 to 23125. [2021-11-02 22:32:07,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23125 states, 23123 states have (on average 1.182977987285387) internal successors, (27354), 23124 states have internal predecessors, (27354), 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) [2021-11-02 22:32:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23125 states to 23125 states and 27354 transitions. [2021-11-02 22:32:07,606 INFO L78 Accepts]: Start accepts. Automaton has 23125 states and 27354 transitions. Word has length 54 [2021-11-02 22:32:07,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:32:07,607 INFO L470 AbstractCegarLoop]: Abstraction has 23125 states and 27354 transitions. [2021-11-02 22:32:07,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.891891891891892) internal successors, (107), 38 states have internal predecessors, (107), 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) [2021-11-02 22:32:07,607 INFO L276 IsEmpty]: Start isEmpty. Operand 23125 states and 27354 transitions. [2021-11-02 22:32:07,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 22:32:07,609 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:32:07,609 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2021-11-02 22:32:07,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-11-02 22:32:07,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-02 22:32:07,811 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:32:07,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:32:07,813 INFO L85 PathProgramCache]: Analyzing trace with hash -7314389, now seen corresponding path program 24 times [2021-11-02 22:32:07,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:32:07,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529589065] [2021-11-02 22:32:07,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:07,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:32:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:07,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:32:07,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529589065] [2021-11-02 22:32:07,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529589065] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:07,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730353309] [2021-11-02 22:32:07,994 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:32:07,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:07,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:32:07,996 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:32:08,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-02 22:32:08,809 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-11-02 22:32:08,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:32:08,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-02 22:32:08,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:32:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:09,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730353309] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:09,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:32:09,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13] total 32 [2021-11-02 22:32:09,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328762015] [2021-11-02 22:32:09,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-02 22:32:09,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:32:09,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-02 22:32:09,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=826, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 22:32:09,184 INFO L87 Difference]: Start difference. First operand 23125 states and 27354 transitions. Second operand has 33 states, 32 states have (on average 3.34375) internal successors, (107), 33 states have internal predecessors, (107), 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) [2021-11-02 22:32:27,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:32:27,985 INFO L93 Difference]: Finished difference Result 49443 states and 57231 transitions. [2021-11-02 22:32:27,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2021-11-02 22:32:27,986 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 3.34375) internal successors, (107), 33 states have internal predecessors, (107), 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 54 [2021-11-02 22:32:27,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:32:28,037 INFO L225 Difference]: With dead ends: 49443 [2021-11-02 22:32:28,037 INFO L226 Difference]: Without dead ends: 49442 [2021-11-02 22:32:28,048 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35937 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=13473, Invalid=60783, Unknown=0, NotChecked=0, Total=74256 [2021-11-02 22:32:28,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49442 states. [2021-11-02 22:32:36,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49442 to 23285. [2021-11-02 22:32:36,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23285 states, 23283 states have (on average 1.1830520121977408) internal successors, (27545), 23284 states have internal predecessors, (27545), 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) [2021-11-02 22:32:36,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23285 states to 23285 states and 27545 transitions. [2021-11-02 22:32:36,931 INFO L78 Accepts]: Start accepts. Automaton has 23285 states and 27545 transitions. Word has length 54 [2021-11-02 22:32:36,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:32:36,931 INFO L470 AbstractCegarLoop]: Abstraction has 23285 states and 27545 transitions. [2021-11-02 22:32:36,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 3.34375) internal successors, (107), 33 states have internal predecessors, (107), 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) [2021-11-02 22:32:36,931 INFO L276 IsEmpty]: Start isEmpty. Operand 23285 states and 27545 transitions. [2021-11-02 22:32:36,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-02 22:32:36,934 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:32:36,934 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 1, 1, 1] [2021-11-02 22:32:36,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-11-02 22:32:37,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:37,139 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:32:37,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:32:37,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1352673089, now seen corresponding path program 8 times [2021-11-02 22:32:37,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:32:37,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436838279] [2021-11-02 22:32:37,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:37,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:32:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:37,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:32:37,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436838279] [2021-11-02 22:32:37,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436838279] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:37,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504872588] [2021-11-02 22:32:37,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:32:37,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:37,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:32:37,298 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:32:37,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-02 22:32:38,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:32:38,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:32:38,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-02 22:32:38,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:32:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:38,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504872588] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:38,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:32:38,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2021-11-02 22:32:38,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625684495] [2021-11-02 22:32:38,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-02 22:32:38,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:32:38,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-02 22:32:38,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1152, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 22:32:38,729 INFO L87 Difference]: Start difference. First operand 23285 states and 27545 transitions. Second operand has 38 states, 37 states have (on average 2.945945945945946) internal successors, (109), 38 states have internal predecessors, (109), 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) [2021-11-02 22:32:48,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:32:48,303 INFO L93 Difference]: Finished difference Result 23962 states and 28312 transitions. [2021-11-02 22:32:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-02 22:32:48,303 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.945945945945946) internal successors, (109), 38 states have internal predecessors, (109), 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 55 [2021-11-02 22:32:48,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:32:48,325 INFO L225 Difference]: With dead ends: 23962 [2021-11-02 22:32:48,325 INFO L226 Difference]: Without dead ends: 23961 [2021-11-02 22:32:48,330 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1200 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1017, Invalid=3273, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 22:32:48,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23961 states. [2021-11-02 22:32:56,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23961 to 23313. [2021-11-02 22:32:56,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23313 states, 23311 states have (on average 1.1830466303461884) internal successors, (27578), 23312 states have internal predecessors, (27578), 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) [2021-11-02 22:32:56,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23313 states to 23313 states and 27578 transitions. [2021-11-02 22:32:56,725 INFO L78 Accepts]: Start accepts. Automaton has 23313 states and 27578 transitions. Word has length 55 [2021-11-02 22:32:56,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:32:56,725 INFO L470 AbstractCegarLoop]: Abstraction has 23313 states and 27578 transitions. [2021-11-02 22:32:56,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.945945945945946) internal successors, (109), 38 states have internal predecessors, (109), 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) [2021-11-02 22:32:56,725 INFO L276 IsEmpty]: Start isEmpty. Operand 23313 states and 27578 transitions. [2021-11-02 22:32:56,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-02 22:32:56,727 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:32:56,727 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 1, 1, 1] [2021-11-02 22:32:56,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-11-02 22:32:56,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-11-02 22:32:56,929 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:32:56,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:32:56,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1975856072, now seen corresponding path program 25 times [2021-11-02 22:32:56,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:32:56,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697762841] [2021-11-02 22:32:56,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:56,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:32:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:57,119 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:57,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:32:57,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697762841] [2021-11-02 22:32:57,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697762841] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:57,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137070153] [2021-11-02 22:32:57,120 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:32:57,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:57,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:32:57,121 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:32:57,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-02 22:32:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:58,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-02 22:32:58,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:32:58,532 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:58,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137070153] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:58,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:32:58,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2021-11-02 22:32:58,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620325156] [2021-11-02 22:32:58,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-02 22:32:58,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:32:58,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-02 22:32:58,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1310, Unknown=0, NotChecked=0, Total=1560 [2021-11-02 22:32:58,534 INFO L87 Difference]: Start difference. First operand 23313 states and 27578 transitions. Second operand has 40 states, 39 states have (on average 2.7948717948717947) internal successors, (109), 40 states have internal predecessors, (109), 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) [2021-11-02 22:33:28,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:33:28,718 INFO L93 Difference]: Finished difference Result 54635 states and 63674 transitions. [2021-11-02 22:33:28,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 382 states. [2021-11-02 22:33:28,719 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.7948717948717947) internal successors, (109), 40 states have internal predecessors, (109), 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 55 [2021-11-02 22:33:28,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:33:28,774 INFO L225 Difference]: With dead ends: 54635 [2021-11-02 22:33:28,774 INFO L226 Difference]: Without dead ends: 54634 [2021-11-02 22:33:28,789 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78444 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26209, Invalid=136603, Unknown=0, NotChecked=0, Total=162812 [2021-11-02 22:33:28,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54634 states. [2021-11-02 22:33:38,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54634 to 26647. [2021-11-02 22:33:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26647 states, 26645 states have (on average 1.1825107900168887) internal successors, (31508), 26646 states have internal predecessors, (31508), 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) [2021-11-02 22:33:38,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26647 states to 26647 states and 31508 transitions. [2021-11-02 22:33:38,768 INFO L78 Accepts]: Start accepts. Automaton has 26647 states and 31508 transitions. Word has length 55 [2021-11-02 22:33:38,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:33:38,769 INFO L470 AbstractCegarLoop]: Abstraction has 26647 states and 31508 transitions. [2021-11-02 22:33:38,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.7948717948717947) internal successors, (109), 40 states have internal predecessors, (109), 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) [2021-11-02 22:33:38,769 INFO L276 IsEmpty]: Start isEmpty. Operand 26647 states and 31508 transitions. [2021-11-02 22:33:38,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 22:33:38,771 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:33:38,771 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2021-11-02 22:33:38,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-11-02 22:33:38,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-11-02 22:33:38,973 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:33:38,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:33:38,974 INFO L85 PathProgramCache]: Analyzing trace with hash 743368277, now seen corresponding path program 26 times [2021-11-02 22:33:38,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:33:38,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460257903] [2021-11-02 22:33:38,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:33:38,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:33:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:39,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:33:39,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460257903] [2021-11-02 22:33:39,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460257903] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:33:39,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702414554] [2021-11-02 22:33:39,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:33:39,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:33:39,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:33:39,168 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:33:39,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-02 22:33:40,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:33:40,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:33:40,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-02 22:33:40,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:33:40,584 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:40,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702414554] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:33:40,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:33:40,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2021-11-02 22:33:40,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873110540] [2021-11-02 22:33:40,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-02 22:33:40,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:33:40,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-02 22:33:40,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1332, Unknown=0, NotChecked=0, Total=1560 [2021-11-02 22:33:40,586 INFO L87 Difference]: Start difference. First operand 26647 states and 31508 transitions. Second operand has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 40 states have internal predecessors, (111), 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) [2021-11-02 22:34:12,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:12,789 INFO L93 Difference]: Finished difference Result 50437 states and 58885 transitions. [2021-11-02 22:34:12,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 386 states. [2021-11-02 22:34:12,790 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 40 states have internal predecessors, (111), 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 56 [2021-11-02 22:34:12,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:12,846 INFO L225 Difference]: With dead ends: 50437 [2021-11-02 22:34:12,847 INFO L226 Difference]: Without dead ends: 50436 [2021-11-02 22:34:12,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 405 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80871 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=28129, Invalid=137113, Unknown=0, NotChecked=0, Total=165242 [2021-11-02 22:34:12,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50436 states. [2021-11-02 22:34:27,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50436 to 32217. [2021-11-02 22:34:27,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32217 states, 32215 states have (on average 1.1822442961353408) internal successors, (38086), 32216 states have internal predecessors, (38086), 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) [2021-11-02 22:34:27,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32217 states to 32217 states and 38086 transitions. [2021-11-02 22:34:27,221 INFO L78 Accepts]: Start accepts. Automaton has 32217 states and 38086 transitions. Word has length 56 [2021-11-02 22:34:27,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:27,221 INFO L470 AbstractCegarLoop]: Abstraction has 32217 states and 38086 transitions. [2021-11-02 22:34:27,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 40 states have internal predecessors, (111), 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) [2021-11-02 22:34:27,222 INFO L276 IsEmpty]: Start isEmpty. Operand 32217 states and 38086 transitions. [2021-11-02 22:34:27,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 22:34:27,224 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:27,224 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1] [2021-11-02 22:34:27,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-11-02 22:34:27,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:34:27,425 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:34:27,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:27,425 INFO L85 PathProgramCache]: Analyzing trace with hash -236353310, now seen corresponding path program 27 times [2021-11-02 22:34:27,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:34:27,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268495920] [2021-11-02 22:34:27,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:27,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:34:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:34:27,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:34:27,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268495920] [2021-11-02 22:34:27,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268495920] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:34:27,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415316906] [2021-11-02 22:34:27,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:34:27,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:34:27,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:34:27,593 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:34:27,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-02 22:34:28,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-02 22:34:28,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:34:28,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-02 22:34:28,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:34:28,990 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:34:28,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415316906] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:34:28,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:34:28,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 35 [2021-11-02 22:34:28,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705739839] [2021-11-02 22:34:28,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-02 22:34:28,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:34:28,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-02 22:34:28,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 22:34:28,992 INFO L87 Difference]: Start difference. First operand 32217 states and 38086 transitions. Second operand has 36 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 36 states have internal predecessors, (113), 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) [2021-11-02 22:34:56,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:56,819 INFO L93 Difference]: Finished difference Result 41534 states and 48757 transitions. [2021-11-02 22:34:56,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 313 states. [2021-11-02 22:34:56,819 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 36 states have internal predecessors, (113), 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 57 [2021-11-02 22:34:56,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:56,858 INFO L225 Difference]: With dead ends: 41534 [2021-11-02 22:34:56,858 INFO L226 Difference]: Without dead ends: 41533 [2021-11-02 22:34:56,869 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53322 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=18227, Invalid=93663, Unknown=0, NotChecked=0, Total=111890 [2021-11-02 22:34:56,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41533 states. [2021-11-02 22:35:11,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41533 to 32832. [2021-11-02 22:35:11,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32832 states, 32830 states have (on average 1.1821504721291503) internal successors, (38810), 32831 states have internal predecessors, (38810), 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) [2021-11-02 22:35:11,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32832 states to 32832 states and 38810 transitions. [2021-11-02 22:35:11,547 INFO L78 Accepts]: Start accepts. Automaton has 32832 states and 38810 transitions. Word has length 57 [2021-11-02 22:35:11,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:35:11,547 INFO L470 AbstractCegarLoop]: Abstraction has 32832 states and 38810 transitions. [2021-11-02 22:35:11,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 36 states have internal predecessors, (113), 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) [2021-11-02 22:35:11,547 INFO L276 IsEmpty]: Start isEmpty. Operand 32832 states and 38810 transitions. [2021-11-02 22:35:11,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 22:35:11,549 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:35:11,549 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2021-11-02 22:35:11,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-11-02 22:35:11,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:35:11,750 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:35:11,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:11,750 INFO L85 PathProgramCache]: Analyzing trace with hash 2031310284, now seen corresponding path program 9 times [2021-11-02 22:35:11,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:35:11,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126412802] [2021-11-02 22:35:11,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:11,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:35:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:35:11,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:35:11,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126412802] [2021-11-02 22:35:11,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126412802] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:35:11,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643452442] [2021-11-02 22:35:11,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:35:11,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:35:11,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:35:11,844 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:35:11,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-02 22:35:12,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-02 22:35:12,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:35:12,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 22:35:12,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:35:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:35:12,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643452442] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:35:12,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:35:12,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-11-02 22:35:12,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561910689] [2021-11-02 22:35:12,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 22:35:12,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:35:12,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 22:35:12,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:35:12,904 INFO L87 Difference]: Start difference. First operand 32832 states and 38810 transitions. Second operand has 13 states, 12 states have (on average 4.75) internal successors, (57), 13 states have internal predecessors, (57), 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) [2021-11-02 22:35:27,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:35:27,908 INFO L93 Difference]: Finished difference Result 38198 states and 45250 transitions. [2021-11-02 22:35:27,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 22:35:27,908 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.75) internal successors, (57), 13 states have internal predecessors, (57), 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 57 [2021-11-02 22:35:27,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:35:27,952 INFO L225 Difference]: With dead ends: 38198 [2021-11-02 22:35:27,952 INFO L226 Difference]: Without dead ends: 38197 [2021-11-02 22:35:27,958 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:35:27,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38197 states. [2021-11-02 22:35:43,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38197 to 33647. [2021-11-02 22:35:43,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33647 states, 33645 states have (on average 1.1821072967751522) internal successors, (39772), 33646 states have internal predecessors, (39772), 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) [2021-11-02 22:35:43,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33647 states to 33647 states and 39772 transitions. [2021-11-02 22:35:43,419 INFO L78 Accepts]: Start accepts. Automaton has 33647 states and 39772 transitions. Word has length 57 [2021-11-02 22:35:43,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:35:43,419 INFO L470 AbstractCegarLoop]: Abstraction has 33647 states and 39772 transitions. [2021-11-02 22:35:43,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.75) internal successors, (57), 13 states have internal predecessors, (57), 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) [2021-11-02 22:35:43,419 INFO L276 IsEmpty]: Start isEmpty. Operand 33647 states and 39772 transitions. [2021-11-02 22:35:43,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-02 22:35:43,422 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:35:43,422 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 3, 3, 3, 3, 3, 1, 1, 1] [2021-11-02 22:35:43,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-11-02 22:35:43,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-11-02 22:35:43,624 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:35:43,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:43,626 INFO L85 PathProgramCache]: Analyzing trace with hash 620050815, now seen corresponding path program 28 times [2021-11-02 22:35:43,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:35:43,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384644983] [2021-11-02 22:35:43,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:43,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:35:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:43,801 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:35:43,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:35:43,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384644983] [2021-11-02 22:35:43,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384644983] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:35:43,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586591726] [2021-11-02 22:35:43,803 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:35:43,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:35:43,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:35:43,815 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:35:43,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-02 22:35:44,934 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:35:44,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:35:44,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-02 22:35:44,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:35:45,455 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:35:45,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586591726] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:35:45,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:35:45,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 36 [2021-11-02 22:35:45,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979834926] [2021-11-02 22:35:45,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-02 22:35:45,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:35:45,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-02 22:35:45,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1115, Unknown=0, NotChecked=0, Total=1332 [2021-11-02 22:35:45,457 INFO L87 Difference]: Start difference. First operand 33647 states and 39772 transitions. Second operand has 37 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 37 states have internal predecessors, (115), 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) [2021-11-02 22:36:15,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:15,256 INFO L93 Difference]: Finished difference Result 40213 states and 47264 transitions. [2021-11-02 22:36:15,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 351 states. [2021-11-02 22:36:15,256 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 37 states have internal predecessors, (115), 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 58 [2021-11-02 22:36:15,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:15,302 INFO L225 Difference]: With dead ends: 40213 [2021-11-02 22:36:15,302 INFO L226 Difference]: Without dead ends: 40212 [2021-11-02 22:36:15,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 370 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64965 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=20226, Invalid=117786, Unknown=0, NotChecked=0, Total=138012 [2021-11-02 22:36:15,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40212 states. [2021-11-02 22:36:30,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40212 to 34010. [2021-11-02 22:36:30,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34010 states, 34008 states have (on average 1.1821042107739355) internal successors, (40201), 34009 states have internal predecessors, (40201), 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) [2021-11-02 22:36:30,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34010 states to 34010 states and 40201 transitions. [2021-11-02 22:36:30,828 INFO L78 Accepts]: Start accepts. Automaton has 34010 states and 40201 transitions. Word has length 58 [2021-11-02 22:36:30,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:30,828 INFO L470 AbstractCegarLoop]: Abstraction has 34010 states and 40201 transitions. [2021-11-02 22:36:30,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 37 states have internal predecessors, (115), 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) [2021-11-02 22:36:30,829 INFO L276 IsEmpty]: Start isEmpty. Operand 34010 states and 40201 transitions. [2021-11-02 22:36:30,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-02 22:36:30,832 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:30,832 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-02 22:36:30,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-11-02 22:36:31,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-11-02 22:36:31,035 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:36:31,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:31,036 INFO L85 PathProgramCache]: Analyzing trace with hash 824860918, now seen corresponding path program 29 times [2021-11-02 22:36:31,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:31,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459328639] [2021-11-02 22:36:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:31,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:36:31,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:31,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459328639] [2021-11-02 22:36:31,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459328639] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:36:31,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517359906] [2021-11-02 22:36:31,166 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:36:31,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:36:31,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:36:31,167 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:36:31,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-02 22:36:32,152 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-11-02 22:36:32,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:36:32,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-02 22:36:32,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:36:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:36:32,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517359906] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:36:32,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:36:32,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 22] total 36 [2021-11-02 22:36:32,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831260433] [2021-11-02 22:36:32,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-02 22:36:32,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:32,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-02 22:36:32,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1119, Unknown=0, NotChecked=0, Total=1332 [2021-11-02 22:36:32,660 INFO L87 Difference]: Start difference. First operand 34010 states and 40201 transitions. Second operand has 37 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 37 states have internal predecessors, (115), 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) [2021-11-02 22:37:09,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:09,727 INFO L93 Difference]: Finished difference Result 64262 states and 74937 transitions. [2021-11-02 22:37:09,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 358 states. [2021-11-02 22:37:09,728 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 37 states have internal predecessors, (115), 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 58 [2021-11-02 22:37:09,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:09,798 INFO L225 Difference]: With dead ends: 64262 [2021-11-02 22:37:09,798 INFO L226 Difference]: Without dead ends: 64261 [2021-11-02 22:37:09,814 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 376 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63642 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=21156, Invalid=121350, Unknown=0, NotChecked=0, Total=142506 [2021-11-02 22:37:09,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64261 states. [2021-11-02 22:37:21,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64261 to 22146. [2021-11-02 22:37:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22146 states, 22144 states have (on average 1.1810874277456647) internal successors, (26154), 22145 states have internal predecessors, (26154), 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) [2021-11-02 22:37:21,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22146 states to 22146 states and 26154 transitions. [2021-11-02 22:37:21,152 INFO L78 Accepts]: Start accepts. Automaton has 22146 states and 26154 transitions. Word has length 58 [2021-11-02 22:37:21,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:21,152 INFO L470 AbstractCegarLoop]: Abstraction has 22146 states and 26154 transitions. [2021-11-02 22:37:21,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 37 states have internal predecessors, (115), 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) [2021-11-02 22:37:21,152 INFO L276 IsEmpty]: Start isEmpty. Operand 22146 states and 26154 transitions. [2021-11-02 22:37:21,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 22:37:21,155 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:21,155 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2021-11-02 22:37:21,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-11-02 22:37:21,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-11-02 22:37:21,355 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:37:21,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:21,356 INFO L85 PathProgramCache]: Analyzing trace with hash 940196035, now seen corresponding path program 30 times [2021-11-02 22:37:21,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:21,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026994410] [2021-11-02 22:37:21,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:21,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:21,514 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:37:21,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:21,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026994410] [2021-11-02 22:37:21,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026994410] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:37:21,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135638522] [2021-11-02 22:37:21,514 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:37:21,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:37:21,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:37:21,515 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:37:21,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-02 22:37:22,536 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-11-02 22:37:22,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:37:22,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-02 22:37:22,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:37:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:37:22,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135638522] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:37:22,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:37:22,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14] total 35 [2021-11-02 22:37:22,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678743931] [2021-11-02 22:37:22,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-02 22:37:22,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:22,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-02 22:37:22,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=981, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 22:37:22,954 INFO L87 Difference]: Start difference. First operand 22146 states and 26154 transitions. Second operand has 36 states, 35 states have (on average 3.342857142857143) internal successors, (117), 36 states have internal predecessors, (117), 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) [2021-11-02 22:37:49,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:49,464 INFO L93 Difference]: Finished difference Result 49976 states and 57560 transitions. [2021-11-02 22:37:49,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 298 states. [2021-11-02 22:37:49,464 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.342857142857143) internal successors, (117), 36 states have internal predecessors, (117), 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 59 [2021-11-02 22:37:49,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:49,516 INFO L225 Difference]: With dead ends: 49976 [2021-11-02 22:37:49,516 INFO L226 Difference]: Without dead ends: 49975 [2021-11-02 22:37:49,528 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50107 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=18126, Invalid=83316, Unknown=0, NotChecked=0, Total=101442 [2021-11-02 22:37:49,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49975 states. [2021-11-02 22:38:01,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49975 to 22575. [2021-11-02 22:38:01,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22575 states, 22573 states have (on average 1.1817658264298054) internal successors, (26676), 22574 states have internal predecessors, (26676), 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) [2021-11-02 22:38:01,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22575 states to 22575 states and 26676 transitions. [2021-11-02 22:38:01,851 INFO L78 Accepts]: Start accepts. Automaton has 22575 states and 26676 transitions. Word has length 59 [2021-11-02 22:38:01,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:38:01,851 INFO L470 AbstractCegarLoop]: Abstraction has 22575 states and 26676 transitions. [2021-11-02 22:38:01,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.342857142857143) internal successors, (117), 36 states have internal predecessors, (117), 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) [2021-11-02 22:38:01,851 INFO L276 IsEmpty]: Start isEmpty. Operand 22575 states and 26676 transitions. [2021-11-02 22:38:01,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-02 22:38:01,854 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:38:01,854 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:38:01,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-11-02 22:38:02,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-11-02 22:38:02,056 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:38:02,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:38:02,056 INFO L85 PathProgramCache]: Analyzing trace with hash 660725161, now seen corresponding path program 31 times [2021-11-02 22:38:02,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:38:02,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106240291] [2021-11-02 22:38:02,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:38:02,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:38:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:38:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:38:02,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:38:02,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106240291] [2021-11-02 22:38:02,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106240291] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:38:02,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925073443] [2021-11-02 22:38:02,255 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:38:02,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:38:02,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:38:02,255 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:38:02,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-11-02 22:38:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:38:03,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-02 22:38:03,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:38:03,931 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:38:03,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925073443] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:38:03,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:38:03,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 39 [2021-11-02 22:38:03,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743253156] [2021-11-02 22:38:03,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-02 22:38:03,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:38:03,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-02 22:38:03,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1318, Unknown=0, NotChecked=0, Total=1560 [2021-11-02 22:38:03,932 INFO L87 Difference]: Start difference. First operand 22575 states and 26676 transitions. Second operand has 40 states, 39 states have (on average 3.051282051282051) internal successors, (119), 40 states have internal predecessors, (119), 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) [2021-11-02 22:38:23,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:38:23,536 INFO L93 Difference]: Finished difference Result 24603 states and 28982 transitions. [2021-11-02 22:38:23,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2021-11-02 22:38:23,536 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 3.051282051282051) internal successors, (119), 40 states have internal predecessors, (119), 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 60 [2021-11-02 22:38:23,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:38:23,562 INFO L225 Difference]: With dead ends: 24603 [2021-11-02 22:38:23,562 INFO L226 Difference]: Without dead ends: 24602 [2021-11-02 22:38:23,569 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21875 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8706, Invalid=43050, Unknown=0, NotChecked=0, Total=51756 [2021-11-02 22:38:23,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24602 states. [2021-11-02 22:38:36,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24602 to 22977. [2021-11-02 22:38:36,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22977 states, 22975 states have (on average 1.1816757344940152) internal successors, (27149), 22976 states have internal predecessors, (27149), 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) [2021-11-02 22:38:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22977 states to 22977 states and 27149 transitions. [2021-11-02 22:38:37,016 INFO L78 Accepts]: Start accepts. Automaton has 22977 states and 27149 transitions. Word has length 60 [2021-11-02 22:38:37,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:38:37,017 INFO L470 AbstractCegarLoop]: Abstraction has 22977 states and 27149 transitions. [2021-11-02 22:38:37,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 3.051282051282051) internal successors, (119), 40 states have internal predecessors, (119), 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) [2021-11-02 22:38:37,017 INFO L276 IsEmpty]: Start isEmpty. Operand 22977 states and 27149 transitions. [2021-11-02 22:38:37,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-02 22:38:37,021 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:38:37,022 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 3, 1, 1, 1] [2021-11-02 22:38:37,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-11-02 22:38:37,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-11-02 22:38:37,223 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:38:37,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:38:37,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1627163296, now seen corresponding path program 32 times [2021-11-02 22:38:37,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:38:37,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104339786] [2021-11-02 22:38:37,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:38:37,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:38:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:38:37,442 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:38:37,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:38:37,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104339786] [2021-11-02 22:38:37,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104339786] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:38:37,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914678544] [2021-11-02 22:38:37,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:38:37,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:38:37,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:38:37,446 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:38:37,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-11-02 22:38:38,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:38:38,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:38:38,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-02 22:38:38,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:38:39,184 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:38:39,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914678544] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:38:39,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:38:39,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2021-11-02 22:38:39,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309396817] [2021-11-02 22:38:39,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-02 22:38:39,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:38:39,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-02 22:38:39,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1584, Unknown=0, NotChecked=0, Total=1892 [2021-11-02 22:38:39,186 INFO L87 Difference]: Start difference. First operand 22977 states and 27149 transitions. Second operand has 44 states, 43 states have (on average 2.7674418604651163) internal successors, (119), 44 states have internal predecessors, (119), 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) [2021-11-02 22:39:27,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:39:27,820 INFO L93 Difference]: Finished difference Result 54399 states and 63260 transitions. [2021-11-02 22:39:27,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 475 states. [2021-11-02 22:39:27,821 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.7674418604651163) internal successors, (119), 44 states have internal predecessors, (119), 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 60 [2021-11-02 22:39:27,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:39:27,887 INFO L225 Difference]: With dead ends: 54399 [2021-11-02 22:39:27,887 INFO L226 Difference]: Without dead ends: 54398 [2021-11-02 22:39:27,907 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 498 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121364 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=38409, Invalid=211091, Unknown=0, NotChecked=0, Total=249500 [2021-11-02 22:39:27,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54398 states. [2021-11-02 22:39:45,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54398 to 25113. [2021-11-02 22:39:45,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25113 states, 25111 states have (on average 1.181036199275218) internal successors, (29657), 25112 states have internal predecessors, (29657), 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) [2021-11-02 22:39:45,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25113 states to 25113 states and 29657 transitions. [2021-11-02 22:39:45,435 INFO L78 Accepts]: Start accepts. Automaton has 25113 states and 29657 transitions. Word has length 60 [2021-11-02 22:39:45,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:39:45,436 INFO L470 AbstractCegarLoop]: Abstraction has 25113 states and 29657 transitions. [2021-11-02 22:39:45,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.7674418604651163) internal successors, (119), 44 states have internal predecessors, (119), 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) [2021-11-02 22:39:45,436 INFO L276 IsEmpty]: Start isEmpty. Operand 25113 states and 29657 transitions. [2021-11-02 22:39:45,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 22:39:45,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:39:45,439 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1] [2021-11-02 22:39:45,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-11-02 22:39:45,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:39:45,640 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:39:45,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:39:45,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1438065974, now seen corresponding path program 9 times [2021-11-02 22:39:45,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:39:45,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44189450] [2021-11-02 22:39:45,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:39:45,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:39:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:39:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:39:45,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:39:45,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44189450] [2021-11-02 22:39:45,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44189450] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:39:45,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186141847] [2021-11-02 22:39:45,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:39:45,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:39:45,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:39:45,903 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:39:45,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-11-02 22:39:47,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-02 22:39:47,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:39:47,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-02 22:39:47,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:39:48,038 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:39:48,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186141847] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:39:48,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:39:48,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 41 [2021-11-02 22:39:48,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015135670] [2021-11-02 22:39:48,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-02 22:39:48,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:39:48,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-02 22:39:48,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1420, Unknown=0, NotChecked=0, Total=1722 [2021-11-02 22:39:48,040 INFO L87 Difference]: Start difference. First operand 25113 states and 29657 transitions. Second operand has 42 states, 41 states have (on average 2.951219512195122) internal successors, (121), 42 states have internal predecessors, (121), 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) [2021-11-02 22:40:06,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:06,793 INFO L93 Difference]: Finished difference Result 25920 states and 30571 transitions. [2021-11-02 22:40:06,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-02 22:40:06,793 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.951219512195122) internal successors, (121), 42 states have internal predecessors, (121), 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 61 [2021-11-02 22:40:06,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:06,823 INFO L225 Difference]: With dead ends: 25920 [2021-11-02 22:40:06,823 INFO L226 Difference]: Without dead ends: 25919 [2021-11-02 22:40:06,827 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1542 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1266, Invalid=4136, Unknown=0, NotChecked=0, Total=5402 [2021-11-02 22:40:06,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25919 states. [2021-11-02 22:40:24,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25919 to 25141. [2021-11-02 22:40:24,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25141 states, 25139 states have (on average 1.1810334539957834) internal successors, (29690), 25140 states have internal predecessors, (29690), 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) [2021-11-02 22:40:24,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25141 states to 25141 states and 29690 transitions. [2021-11-02 22:40:24,285 INFO L78 Accepts]: Start accepts. Automaton has 25141 states and 29690 transitions. Word has length 61 [2021-11-02 22:40:24,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:24,285 INFO L470 AbstractCegarLoop]: Abstraction has 25141 states and 29690 transitions. [2021-11-02 22:40:24,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.951219512195122) internal successors, (121), 42 states have internal predecessors, (121), 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) [2021-11-02 22:40:24,286 INFO L276 IsEmpty]: Start isEmpty. Operand 25141 states and 29690 transitions. [2021-11-02 22:40:24,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 22:40:24,290 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:24,290 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2021-11-02 22:40:24,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-11-02 22:40:24,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:24,491 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:40:24,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:24,491 INFO L85 PathProgramCache]: Analyzing trace with hash 767818989, now seen corresponding path program 33 times [2021-11-02 22:40:24,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:24,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564996292] [2021-11-02 22:40:24,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:24,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:24,677 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:40:24,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:24,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564996292] [2021-11-02 22:40:24,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564996292] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:24,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788734381] [2021-11-02 22:40:24,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:40:24,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:24,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:24,680 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:24,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-11-02 22:40:25,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-02 22:40:25,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:25,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-02 22:40:25,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:40:26,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788734381] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:26,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:26,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18] total 39 [2021-11-02 22:40:26,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236074379] [2021-11-02 22:40:26,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-02 22:40:26,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:26,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-02 22:40:26,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=1280, Unknown=0, NotChecked=0, Total=1560 [2021-11-02 22:40:26,570 INFO L87 Difference]: Start difference. First operand 25141 states and 29690 transitions. Second operand has 40 states, 39 states have (on average 3.1025641025641026) internal successors, (121), 40 states have internal predecessors, (121), 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) [2021-11-02 22:41:17,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:41:17,795 INFO L93 Difference]: Finished difference Result 51063 states and 59373 transitions. [2021-11-02 22:41:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 416 states. [2021-11-02 22:41:17,796 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 3.1025641025641026) internal successors, (121), 40 states have internal predecessors, (121), 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 61 [2021-11-02 22:41:17,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:41:17,858 INFO L225 Difference]: With dead ends: 51063 [2021-11-02 22:41:17,858 INFO L226 Difference]: Without dead ends: 51062 [2021-11-02 22:41:17,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 440 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97656 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=31290, Invalid=163632, Unknown=0, NotChecked=0, Total=194922 [2021-11-02 22:41:17,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51062 states. [2021-11-02 22:41:35,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51062 to 22941. [2021-11-02 22:41:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22941 states, 22939 states have (on average 1.1811325689873142) internal successors, (27094), 22940 states have internal predecessors, (27094), 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) [2021-11-02 22:41:35,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22941 states to 22941 states and 27094 transitions. [2021-11-02 22:41:35,040 INFO L78 Accepts]: Start accepts. Automaton has 22941 states and 27094 transitions. Word has length 61 [2021-11-02 22:41:35,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:41:35,041 INFO L470 AbstractCegarLoop]: Abstraction has 22941 states and 27094 transitions. [2021-11-02 22:41:35,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 3.1025641025641026) internal successors, (121), 40 states have internal predecessors, (121), 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) [2021-11-02 22:41:35,041 INFO L276 IsEmpty]: Start isEmpty. Operand 22941 states and 27094 transitions. [2021-11-02 22:41:35,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 22:41:35,044 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:41:35,045 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1] [2021-11-02 22:41:35,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-11-02 22:41:35,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:35,247 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-02 22:41:35,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:35,248 INFO L85 PathProgramCache]: Analyzing trace with hash 521618762, now seen corresponding path program 34 times [2021-11-02 22:41:35,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:35,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440213738] [2021-11-02 22:41:35,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:35,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:35,437 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:41:35,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:35,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440213738] [2021-11-02 22:41:35,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440213738] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:35,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845812265] [2021-11-02 22:41:35,438 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:41:35,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:35,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:41:35,452 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:41:35,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ac2a00-d0ac-4a59-b816-7e0abba03bde/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-02 22:41:36,683 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:41:36,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:41:36,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-02 22:41:36,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:41:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:41:37,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845812265] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:37,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:41:37,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2021-11-02 22:41:37,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186911512] [2021-11-02 22:41:37,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-02 22:41:37,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:37,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-02 22:41:37,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1632, Unknown=0, NotChecked=0, Total=1892 [2021-11-02 22:41:37,374 INFO L87 Difference]: Start difference. First operand 22941 states and 27094 transitions. Second operand has 44 states, 43 states have (on average 2.86046511627907) internal successors, (123), 44 states have internal predecessors, (123), 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)