./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be --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 cad2c6f6e8ebe2adcd550e4a56b83be37e52f812ae33bfb645236c6925734dbf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:23:25,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:23:25,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:23:25,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:23:25,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:23:25,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:23:25,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:23:25,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:23:25,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:23:25,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:23:25,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:23:25,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:23:25,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:23:25,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:23:25,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:23:25,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:23:25,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:23:25,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:23:25,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:23:25,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:23:25,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:23:25,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:23:25,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:23:25,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:23:25,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:23:25,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:23:25,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:23:25,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:23:25,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:23:25,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:23:25,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:23:25,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:23:25,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:23:25,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:23:25,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:23:25,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:23:25,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:23:25,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:23:25,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:23:25,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:23:25,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:23:25,820 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-21 19:23:25,876 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:23:25,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:23:25,877 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:23:25,877 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:23:25,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:23:25,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:23:25,878 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:23:25,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:23:25,879 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:23:25,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:23:25,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:23:25,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:23:25,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:23:25,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:23:25,880 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-21 19:23:25,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:23:25,881 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:23:25,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:23:25,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:23:25,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:23:25,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:23:25,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:23:25,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:23:25,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:23:25,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:23:25,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:23:25,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:23:25,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:23:25,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:23:25,883 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_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cad2c6f6e8ebe2adcd550e4a56b83be37e52f812ae33bfb645236c6925734dbf [2021-10-21 19:23:26,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:23:26,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:23:26,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:23:26,219 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:23:26,220 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:23:26,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2021-10-21 19:23:26,304 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/data/b2a3cbe82/8ff1ac68dc0e4200af8ef79af241697d/FLAG6b914b8db [2021-10-21 19:23:26,790 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:23:26,791 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2021-10-21 19:23:26,797 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/data/b2a3cbe82/8ff1ac68dc0e4200af8ef79af241697d/FLAG6b914b8db [2021-10-21 19:23:27,175 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/data/b2a3cbe82/8ff1ac68dc0e4200af8ef79af241697d [2021-10-21 19:23:27,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:23:27,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:23:27,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:23:27,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:23:27,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:23:27,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:23:27" (1/1) ... [2021-10-21 19:23:27,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8cec82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:27, skipping insertion in model container [2021-10-21 19:23:27,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:23:27" (1/1) ... [2021-10-21 19:23:27,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:23:27,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:23:27,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:23:27,466 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:23:27,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:23:27,509 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:23:27,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:27 WrapperNode [2021-10-21 19:23:27,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:23:27,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:23:27,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:23:27,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:23:27,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:27" (1/1) ... [2021-10-21 19:23:27,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:27" (1/1) ... [2021-10-21 19:23:27,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:23:27,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:23:27,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:23:27,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:23:27,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:27" (1/1) ... [2021-10-21 19:23:27,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:27" (1/1) ... [2021-10-21 19:23:27,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:27" (1/1) ... [2021-10-21 19:23:27,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:27" (1/1) ... [2021-10-21 19:23:27,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:27" (1/1) ... [2021-10-21 19:23:27,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:27" (1/1) ... [2021-10-21 19:23:27,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:27" (1/1) ... [2021-10-21 19:23:27,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:23:27,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:23:27,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:23:27,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:23:27,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:27" (1/1) ... [2021-10-21 19:23:27,577 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:23:27,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:27,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:27,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:23:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:23:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:23:27,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:23:27,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:23:27,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:23:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:23:27,833 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:23:27,833 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-21 19:23:27,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:23:27 BoogieIcfgContainer [2021-10-21 19:23:27,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:23:27,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:23:27,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:23:27,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:23:27,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:23:27" (1/3) ... [2021-10-21 19:23:27,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1ea614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:23:27, skipping insertion in model container [2021-10-21 19:23:27,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:27" (2/3) ... [2021-10-21 19:23:27,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1ea614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:23:27, skipping insertion in model container [2021-10-21 19:23:27,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:23:27" (3/3) ... [2021-10-21 19:23:27,859 INFO L111 eAbstractionObserver]: Analyzing ICFG Arrays01-EquivalentConstantIndices-1.c [2021-10-21 19:23:27,864 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:23:27,865 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-21 19:23:27,924 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:23:27,934 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 [2021-10-21 19:23:27,934 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-21 19:23:27,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:27,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-21 19:23:27,956 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:27,957 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-21 19:23:27,958 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:27,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:27,964 INFO L82 PathProgramCache]: Analyzing trace with hash 28698728, now seen corresponding path program 1 times [2021-10-21 19:23:27,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:27,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848291539] [2021-10-21 19:23:27,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:27,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:28,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:28,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:28,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848291539] [2021-10-21 19:23:28,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848291539] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:23:28,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:23:28,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:23:28,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034294259] [2021-10-21 19:23:28,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:23:28,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:28,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:23:28,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:23:28,243 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 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 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2021-10-21 19:23:28,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:28,335 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-10-21 19:23:28,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:23:28,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 [2021-10-21 19:23:28,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:28,345 INFO L225 Difference]: With dead ends: 34 [2021-10-21 19:23:28,345 INFO L226 Difference]: Without dead ends: 18 [2021-10-21 19:23:28,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:23:28,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-21 19:23:28,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-21 19:23:28,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 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) [2021-10-21 19:23:28,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-21 19:23:28,377 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2021-10-21 19:23:28,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:28,378 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-21 19:23:28,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2021-10-21 19:23:28,378 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-21 19:23:28,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 19:23:28,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:28,379 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-21 19:23:28,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:23:28,380 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:28,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:28,381 INFO L82 PathProgramCache]: Analyzing trace with hash -363792156, now seen corresponding path program 1 times [2021-10-21 19:23:28,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:28,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556890664] [2021-10-21 19:23:28,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:28,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:23:28,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:28,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556890664] [2021-10-21 19:23:28,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556890664] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:23:28,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:23:28,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:23:28,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561202102] [2021-10-21 19:23:28,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:23:28,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:28,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:23:28,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:23:28,447 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2021-10-21 19:23:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:28,478 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-10-21 19:23:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:23:28,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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 [2021-10-21 19:23:28,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:28,480 INFO L225 Difference]: With dead ends: 18 [2021-10-21 19:23:28,480 INFO L226 Difference]: Without dead ends: 17 [2021-10-21 19:23:28,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:23:28,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-21 19:23:28,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-21 19:23:28,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:28,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-21 19:23:28,486 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2021-10-21 19:23:28,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:28,487 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-21 19:23:28,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2021-10-21 19:23:28,487 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-21 19:23:28,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:23:28,488 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:28,488 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:28,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:23:28,489 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:28,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:28,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1607296535, now seen corresponding path program 1 times [2021-10-21 19:23:28,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:28,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126813384] [2021-10-21 19:23:28,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:28,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:28,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:28,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126813384] [2021-10-21 19:23:28,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126813384] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:28,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145620432] [2021-10-21 19:23:28,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:28,562 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:28,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:28,564 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:28,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:23:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:28,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:23:28,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:28,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:28,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145620432] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:28,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:28,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-21 19:23:28,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151525680] [2021-10-21 19:23:28,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:23:28,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:28,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:23:28,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:23:28,774 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:28,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:28,835 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-10-21 19:23:28,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:23:28,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 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 [2021-10-21 19:23:28,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:28,836 INFO L225 Difference]: With dead ends: 28 [2021-10-21 19:23:28,836 INFO L226 Difference]: Without dead ends: 22 [2021-10-21 19:23:28,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:23:28,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-21 19:23:28,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2021-10-21 19:23:28,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 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) [2021-10-21 19:23:28,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-21 19:23:28,841 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2021-10-21 19:23:28,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:28,841 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-21 19:23:28,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:28,842 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-21 19:23:28,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:23:28,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:28,843 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2021-10-21 19:23:28,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:29,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:29,044 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:29,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:29,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1607345098, now seen corresponding path program 1 times [2021-10-21 19:23:29,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:29,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956834104] [2021-10-21 19:23:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:29,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:29,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:29,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:29,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956834104] [2021-10-21 19:23:29,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956834104] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:29,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749104535] [2021-10-21 19:23:29,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:29,125 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:29,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:29,134 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:29,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:23:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:29,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:23:29,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:29,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:29,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749104535] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:23:29,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:23:29,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-10-21 19:23:29,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473524222] [2021-10-21 19:23:29,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:23:29,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:29,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:23:29,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:23:29,271 INFO L87 Difference]: Start difference. First operand 18 states and 19 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) [2021-10-21 19:23:29,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:29,294 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-10-21 19:23:29,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:23:29,295 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 [2021-10-21 19:23:29,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:29,296 INFO L225 Difference]: With dead ends: 18 [2021-10-21 19:23:29,296 INFO L226 Difference]: Without dead ends: 17 [2021-10-21 19:23:29,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:23:29,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-21 19:23:29,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-21 19:23:29,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:29,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-21 19:23:29,300 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2021-10-21 19:23:29,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:29,301 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-21 19:23:29,301 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) [2021-10-21 19:23:29,301 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-21 19:23:29,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:23:29,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:29,302 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:29,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:29,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:29,526 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:29,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:29,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1053474021, now seen corresponding path program 2 times [2021-10-21 19:23:29,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:29,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449929520] [2021-10-21 19:23:29,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:29,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:29,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:29,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:29,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449929520] [2021-10-21 19:23:29,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449929520] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:29,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853617997] [2021-10-21 19:23:29,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:23:29,631 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:29,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:29,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:29,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:23:29,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:23:29,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:29,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:23:29,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:29,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853617997] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:29,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:29,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-10-21 19:23:29,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771649562] [2021-10-21 19:23:29,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:23:29,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:29,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:23:29,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:23:29,809 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 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) [2021-10-21 19:23:29,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:29,881 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-10-21 19:23:29,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:23:29,882 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 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 14 [2021-10-21 19:23:29,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:29,883 INFO L225 Difference]: With dead ends: 30 [2021-10-21 19:23:29,883 INFO L226 Difference]: Without dead ends: 24 [2021-10-21 19:23:29,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:23:29,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-21 19:23:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2021-10-21 19:23:29,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 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) [2021-10-21 19:23:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-10-21 19:23:29,891 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2021-10-21 19:23:29,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:29,892 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-10-21 19:23:29,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 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) [2021-10-21 19:23:29,892 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-10-21 19:23:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:23:29,893 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:29,893 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:29,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-21 19:23:30,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:30,110 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:30,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:30,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1100938783, now seen corresponding path program 3 times [2021-10-21 19:23:30,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:30,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581484698] [2021-10-21 19:23:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:30,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:30,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:30,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581484698] [2021-10-21 19:23:30,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581484698] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:30,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613817627] [2021-10-21 19:23:30,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:23:30,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:30,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:30,222 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:30,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:23:30,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-21 19:23:30,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:30,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:23:30,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:30,392 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:30,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613817627] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:30,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:30,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-10-21 19:23:30,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817320903] [2021-10-21 19:23:30,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:23:30,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:30,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:23:30,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:23:30,394 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:30,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:30,455 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-10-21 19:23:30,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:23:30,457 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 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 [2021-10-21 19:23:30,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:30,458 INFO L225 Difference]: With dead ends: 34 [2021-10-21 19:23:30,458 INFO L226 Difference]: Without dead ends: 28 [2021-10-21 19:23:30,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 58.0ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:23:30,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-21 19:23:30,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-10-21 19:23:30,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:30,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-10-21 19:23:30,463 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2021-10-21 19:23:30,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:30,463 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-21 19:23:30,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:30,463 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-10-21 19:23:30,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:23:30,465 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:30,465 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:30,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-21 19:23:30,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:30,670 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:30,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:30,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1326737629, now seen corresponding path program 4 times [2021-10-21 19:23:30,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:30,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954805974] [2021-10-21 19:23:30,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:30,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:30,773 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:30,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:30,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954805974] [2021-10-21 19:23:30,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954805974] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:30,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553454572] [2021-10-21 19:23:30,774 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:23:30,774 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:30,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:30,775 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:30,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:23:30,831 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:23:30,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:30,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:23:30,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:30,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553454572] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:30,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:30,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-10-21 19:23:30,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858919303] [2021-10-21 19:23:30,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:23:30,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:30,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:23:30,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:23:30,924 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 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) [2021-10-21 19:23:30,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:30,990 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-10-21 19:23:30,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:23:30,991 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 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 22 [2021-10-21 19:23:30,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:30,992 INFO L225 Difference]: With dead ends: 38 [2021-10-21 19:23:30,992 INFO L226 Difference]: Without dead ends: 32 [2021-10-21 19:23:30,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 77.1ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:23:30,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-21 19:23:30,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2021-10-21 19:23:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-10-21 19:23:30,997 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 22 [2021-10-21 19:23:30,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:30,998 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-21 19:23:30,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 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) [2021-10-21 19:23:30,998 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-10-21 19:23:30,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 19:23:30,999 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:30,999 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:31,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:31,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:31,210 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:31,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:31,211 INFO L82 PathProgramCache]: Analyzing trace with hash 108793383, now seen corresponding path program 5 times [2021-10-21 19:23:31,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:31,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888789775] [2021-10-21 19:23:31,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:31,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:31,346 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:31,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:31,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888789775] [2021-10-21 19:23:31,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888789775] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:31,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96113726] [2021-10-21 19:23:31,347 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:23:31,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:31,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:31,348 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:31,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:23:31,426 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-21 19:23:31,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:31,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:23:31,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:31,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96113726] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:31,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:31,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-10-21 19:23:31,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99795027] [2021-10-21 19:23:31,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 19:23:31,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:31,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 19:23:31,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:23:31,565 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:31,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:31,663 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-10-21 19:23:31,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:23:31,667 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 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 26 [2021-10-21 19:23:31,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:31,667 INFO L225 Difference]: With dead ends: 42 [2021-10-21 19:23:31,668 INFO L226 Difference]: Without dead ends: 36 [2021-10-21 19:23:31,668 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:23:31,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-21 19:23:31,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2021-10-21 19:23:31,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.096774193548387) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:31,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-10-21 19:23:31,673 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2021-10-21 19:23:31,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:31,673 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-10-21 19:23:31,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:31,673 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-10-21 19:23:31,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 19:23:31,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:31,674 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:31,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:31,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:31,875 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:31,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:31,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1590598869, now seen corresponding path program 6 times [2021-10-21 19:23:31,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:31,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600257780] [2021-10-21 19:23:31,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:31,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:32,011 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:32,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:32,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600257780] [2021-10-21 19:23:32,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600257780] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:32,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458340007] [2021-10-21 19:23:32,012 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:23:32,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:32,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:32,013 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:32,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:23:32,112 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-21 19:23:32,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:32,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 19:23:32,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:32,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458340007] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:32,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:32,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-10-21 19:23:32,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941255746] [2021-10-21 19:23:32,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-21 19:23:32,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:32,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-21 19:23:32,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:23:32,256 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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) [2021-10-21 19:23:32,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:32,368 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2021-10-21 19:23:32,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:23:32,369 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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 30 [2021-10-21 19:23:32,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:32,370 INFO L225 Difference]: With dead ends: 46 [2021-10-21 19:23:32,370 INFO L226 Difference]: Without dead ends: 40 [2021-10-21 19:23:32,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 118.7ms TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2021-10-21 19:23:32,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-21 19:23:32,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-10-21 19:23:32,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:32,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-10-21 19:23:32,387 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 30 [2021-10-21 19:23:32,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:32,389 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-10-21 19:23:32,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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) [2021-10-21 19:23:32,390 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-10-21 19:23:32,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-21 19:23:32,392 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:32,392 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:32,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:32,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:32,606 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:32,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:32,607 INFO L82 PathProgramCache]: Analyzing trace with hash -2022926801, now seen corresponding path program 7 times [2021-10-21 19:23:32,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:32,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213990240] [2021-10-21 19:23:32,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:32,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:32,772 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:32,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:32,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213990240] [2021-10-21 19:23:32,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213990240] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:32,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952017232] [2021-10-21 19:23:32,773 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:23:32,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:32,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:32,778 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:32,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 19:23:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:32,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 19:23:32,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:33,014 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:33,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952017232] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:33,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:33,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-10-21 19:23:33,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305941332] [2021-10-21 19:23:33,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-21 19:23:33,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:33,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-21 19:23:33,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:23:33,017 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:33,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:33,142 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2021-10-21 19:23:33,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 19:23:33,146 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 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 [2021-10-21 19:23:33,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:33,147 INFO L225 Difference]: With dead ends: 50 [2021-10-21 19:23:33,147 INFO L226 Difference]: Without dead ends: 44 [2021-10-21 19:23:33,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 168.4ms TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2021-10-21 19:23:33,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-21 19:23:33,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-10-21 19:23:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 40 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) [2021-10-21 19:23:33,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-10-21 19:23:33,152 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 34 [2021-10-21 19:23:33,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:33,152 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-10-21 19:23:33,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:33,153 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-10-21 19:23:33,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-21 19:23:33,154 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:33,154 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:33,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:33,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-21 19:23:33,382 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:33,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:33,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1492211917, now seen corresponding path program 8 times [2021-10-21 19:23:33,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:33,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905333315] [2021-10-21 19:23:33,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:33,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:33,573 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:33,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:33,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905333315] [2021-10-21 19:23:33,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905333315] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:33,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328478143] [2021-10-21 19:23:33,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:23:33,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:33,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:33,574 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:33,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 19:23:33,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:23:33,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:33,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-21 19:23:33,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:33,822 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:33,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328478143] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:33,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:33,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-10-21 19:23:33,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494238583] [2021-10-21 19:23:33,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-21 19:23:33,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:33,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-21 19:23:33,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:23:33,826 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:33,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:33,976 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2021-10-21 19:23:33,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-21 19:23:33,976 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 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 [2021-10-21 19:23:33,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:33,977 INFO L225 Difference]: With dead ends: 54 [2021-10-21 19:23:33,977 INFO L226 Difference]: Without dead ends: 48 [2021-10-21 19:23:33,978 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 205.1ms TimeCoverageRelationStatistics Valid=246, Invalid=566, Unknown=0, NotChecked=0, Total=812 [2021-10-21 19:23:33,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-21 19:23:33,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2021-10-21 19:23:33,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.069767441860465) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:33,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-10-21 19:23:33,985 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 38 [2021-10-21 19:23:33,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:33,988 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-21 19:23:33,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-10-21 19:23:33,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-21 19:23:33,995 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:33,996 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:34,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:34,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-21 19:23:34,210 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:34,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:34,211 INFO L82 PathProgramCache]: Analyzing trace with hash 360224311, now seen corresponding path program 9 times [2021-10-21 19:23:34,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:34,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264754664] [2021-10-21 19:23:34,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:34,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:34,422 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:34,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:34,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264754664] [2021-10-21 19:23:34,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264754664] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:34,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881968481] [2021-10-21 19:23:34,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:23:34,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:34,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:34,424 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:34,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 19:23:34,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-21 19:23:34,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:34,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 19:23:34,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:34,768 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:34,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881968481] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:34,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:34,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-10-21 19:23:34,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136470225] [2021-10-21 19:23:34,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-21 19:23:34,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:34,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-21 19:23:34,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-10-21 19:23:34,774 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 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) [2021-10-21 19:23:34,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:34,932 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2021-10-21 19:23:34,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-21 19:23:34,932 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 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 42 [2021-10-21 19:23:34,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:34,936 INFO L225 Difference]: With dead ends: 58 [2021-10-21 19:23:34,936 INFO L226 Difference]: Without dead ends: 52 [2021-10-21 19:23:34,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 227.3ms TimeCoverageRelationStatistics Valid=298, Invalid=694, Unknown=0, NotChecked=0, Total=992 [2021-10-21 19:23:34,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-21 19:23:34,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2021-10-21 19:23:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 48 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-10-21 19:23:34,948 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 42 [2021-10-21 19:23:34,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:34,948 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-10-21 19:23:34,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 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) [2021-10-21 19:23:34,949 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-10-21 19:23:34,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-21 19:23:34,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:34,949 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:34,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:35,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-21 19:23:35,174 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:35,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:35,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1334534971, now seen corresponding path program 10 times [2021-10-21 19:23:35,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:35,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136297507] [2021-10-21 19:23:35,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:35,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:35,412 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:35,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:35,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136297507] [2021-10-21 19:23:35,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136297507] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:35,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790008636] [2021-10-21 19:23:35,413 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:23:35,413 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:35,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:35,414 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:35,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-21 19:23:35,545 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:23:35,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:35,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:23:35,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:35,728 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:35,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790008636] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:35,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:35,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-10-21 19:23:35,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008871832] [2021-10-21 19:23:35,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-21 19:23:35,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:35,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-21 19:23:35,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-10-21 19:23:35,730 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:35,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:35,897 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2021-10-21 19:23:35,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-21 19:23:35,898 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 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 [2021-10-21 19:23:35,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:35,900 INFO L225 Difference]: With dead ends: 62 [2021-10-21 19:23:35,900 INFO L226 Difference]: Without dead ends: 56 [2021-10-21 19:23:35,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 251.7ms TimeCoverageRelationStatistics Valid=355, Invalid=835, Unknown=0, NotChecked=0, Total=1190 [2021-10-21 19:23:35,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-21 19:23:35,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2021-10-21 19:23:35,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 52 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:35,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-10-21 19:23:35,913 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 46 [2021-10-21 19:23:35,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:35,915 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-10-21 19:23:35,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:35,915 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-10-21 19:23:35,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-21 19:23:35,916 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:35,916 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:35,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:36,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:36,116 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:36,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:36,117 INFO L82 PathProgramCache]: Analyzing trace with hash 2041056831, now seen corresponding path program 11 times [2021-10-21 19:23:36,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:36,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755661786] [2021-10-21 19:23:36,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:36,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:36,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:36,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755661786] [2021-10-21 19:23:36,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755661786] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:36,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756184813] [2021-10-21 19:23:36,386 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:23:36,386 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:36,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:36,388 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:36,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-21 19:23:36,597 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-21 19:23:36,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:36,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-21 19:23:36,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:36,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756184813] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:36,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:36,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2021-10-21 19:23:36,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346568488] [2021-10-21 19:23:36,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-21 19:23:36,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:36,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-21 19:23:36,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2021-10-21 19:23:36,788 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 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) [2021-10-21 19:23:36,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:36,975 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2021-10-21 19:23:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-21 19:23:36,975 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 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 50 [2021-10-21 19:23:36,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:36,976 INFO L225 Difference]: With dead ends: 66 [2021-10-21 19:23:36,976 INFO L226 Difference]: Without dead ends: 60 [2021-10-21 19:23:36,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 306.6ms TimeCoverageRelationStatistics Valid=417, Invalid=989, Unknown=0, NotChecked=0, Total=1406 [2021-10-21 19:23:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-21 19:23:36,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2021-10-21 19:23:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 56 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:36,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2021-10-21 19:23:36,981 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 50 [2021-10-21 19:23:36,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:36,981 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2021-10-21 19:23:36,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 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) [2021-10-21 19:23:36,982 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2021-10-21 19:23:36,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-21 19:23:36,982 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:36,982 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:37,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:37,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-21 19:23:37,202 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:37,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:37,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1615882429, now seen corresponding path program 12 times [2021-10-21 19:23:37,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:37,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857554622] [2021-10-21 19:23:37,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:37,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:37,553 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:37,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:37,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857554622] [2021-10-21 19:23:37,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857554622] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:37,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857526451] [2021-10-21 19:23:37,554 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:23:37,554 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:37,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:37,555 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:37,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-21 19:23:37,849 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-21 19:23:37,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:37,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-21 19:23:37,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:38,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857526451] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:38,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:38,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-10-21 19:23:38,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035827446] [2021-10-21 19:23:38,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-21 19:23:38,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:38,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-21 19:23:38,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-10-21 19:23:38,030 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 29 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 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) [2021-10-21 19:23:38,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:38,250 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2021-10-21 19:23:38,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-21 19:23:38,250 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 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 54 [2021-10-21 19:23:38,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:38,251 INFO L225 Difference]: With dead ends: 70 [2021-10-21 19:23:38,251 INFO L226 Difference]: Without dead ends: 64 [2021-10-21 19:23:38,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 380.2ms TimeCoverageRelationStatistics Valid=484, Invalid=1156, Unknown=0, NotChecked=0, Total=1640 [2021-10-21 19:23:38,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-21 19:23:38,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2021-10-21 19:23:38,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 60 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) [2021-10-21 19:23:38,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-10-21 19:23:38,258 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 54 [2021-10-21 19:23:38,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:38,258 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-10-21 19:23:38,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 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) [2021-10-21 19:23:38,259 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-10-21 19:23:38,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-21 19:23:38,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:38,259 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:38,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:38,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:38,486 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:38,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:38,486 INFO L82 PathProgramCache]: Analyzing trace with hash -184353209, now seen corresponding path program 13 times [2021-10-21 19:23:38,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:38,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953976478] [2021-10-21 19:23:38,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:38,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:38,823 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:38,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:38,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953976478] [2021-10-21 19:23:38,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953976478] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:38,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212253914] [2021-10-21 19:23:38,824 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:23:38,824 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:38,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:38,824 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:38,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-21 19:23:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:38,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 19:23:38,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:39,220 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:39,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212253914] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:39,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:39,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-10-21 19:23:39,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921303942] [2021-10-21 19:23:39,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-21 19:23:39,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:39,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-21 19:23:39,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-10-21 19:23:39,224 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:39,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:39,478 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2021-10-21 19:23:39,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-21 19:23:39,478 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 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 [2021-10-21 19:23:39,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:39,479 INFO L225 Difference]: With dead ends: 74 [2021-10-21 19:23:39,479 INFO L226 Difference]: Without dead ends: 68 [2021-10-21 19:23:39,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 419.4ms TimeCoverageRelationStatistics Valid=556, Invalid=1336, Unknown=0, NotChecked=0, Total=1892 [2021-10-21 19:23:39,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-21 19:23:39,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2021-10-21 19:23:39,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 64 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:39,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2021-10-21 19:23:39,484 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 58 [2021-10-21 19:23:39,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:39,484 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2021-10-21 19:23:39,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:39,484 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2021-10-21 19:23:39,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-21 19:23:39,485 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:39,485 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:39,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:39,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-21 19:23:39,698 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:39,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:39,699 INFO L82 PathProgramCache]: Analyzing trace with hash 344146763, now seen corresponding path program 14 times [2021-10-21 19:23:39,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:39,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155840700] [2021-10-21 19:23:39,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:39,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:40,103 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:40,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:40,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155840700] [2021-10-21 19:23:40,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155840700] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:40,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805388942] [2021-10-21 19:23:40,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:23:40,104 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:40,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:40,105 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:40,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-21 19:23:40,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:23:40,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:40,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-21 19:23:40,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:40,587 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:40,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805388942] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:40,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:40,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2021-10-21 19:23:40,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078064206] [2021-10-21 19:23:40,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-21 19:23:40,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:40,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-21 19:23:40,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2021-10-21 19:23:40,591 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 33 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) [2021-10-21 19:23:40,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:40,840 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2021-10-21 19:23:40,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-21 19:23:40,840 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 33 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 62 [2021-10-21 19:23:40,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:40,841 INFO L225 Difference]: With dead ends: 78 [2021-10-21 19:23:40,841 INFO L226 Difference]: Without dead ends: 72 [2021-10-21 19:23:40,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 449.5ms TimeCoverageRelationStatistics Valid=633, Invalid=1529, Unknown=0, NotChecked=0, Total=2162 [2021-10-21 19:23:40,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-21 19:23:40,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2021-10-21 19:23:40,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 67 states have (on average 1.044776119402985) internal successors, (70), 68 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:40,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2021-10-21 19:23:40,846 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 62 [2021-10-21 19:23:40,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:40,847 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2021-10-21 19:23:40,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 33 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) [2021-10-21 19:23:40,847 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2021-10-21 19:23:40,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-21 19:23:40,848 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:40,848 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:40,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:41,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-21 19:23:41,074 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:41,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:41,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1083270735, now seen corresponding path program 15 times [2021-10-21 19:23:41,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:41,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112070496] [2021-10-21 19:23:41,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:41,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:41,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:41,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112070496] [2021-10-21 19:23:41,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112070496] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:41,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159548330] [2021-10-21 19:23:41,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:23:41,454 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:41,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:41,456 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:41,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-21 19:23:41,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-10-21 19:23:41,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:41,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-21 19:23:41,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:42,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159548330] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:42,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:42,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-10-21 19:23:42,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612126426] [2021-10-21 19:23:42,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-21 19:23:42,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:42,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-21 19:23:42,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-10-21 19:23:42,094 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 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) [2021-10-21 19:23:42,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:42,372 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2021-10-21 19:23:42,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-21 19:23:42,372 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 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 66 [2021-10-21 19:23:42,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:42,373 INFO L225 Difference]: With dead ends: 82 [2021-10-21 19:23:42,373 INFO L226 Difference]: Without dead ends: 76 [2021-10-21 19:23:42,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 489.1ms TimeCoverageRelationStatistics Valid=715, Invalid=1735, Unknown=0, NotChecked=0, Total=2450 [2021-10-21 19:23:42,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-21 19:23:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2021-10-21 19:23:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 72 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2021-10-21 19:23:42,378 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 66 [2021-10-21 19:23:42,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:42,378 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2021-10-21 19:23:42,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 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) [2021-10-21 19:23:42,379 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2021-10-21 19:23:42,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-21 19:23:42,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:42,379 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:42,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:42,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-21 19:23:42,580 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:42,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:42,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1559337133, now seen corresponding path program 16 times [2021-10-21 19:23:42,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:42,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657014288] [2021-10-21 19:23:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:42,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:43,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:43,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657014288] [2021-10-21 19:23:43,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657014288] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:43,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387542910] [2021-10-21 19:23:43,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:23:43,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:43,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:43,078 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:43,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-21 19:23:43,322 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:23:43,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:43,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-21 19:23:43,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:43,563 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:43,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387542910] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:43,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:43,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-10-21 19:23:43,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158853131] [2021-10-21 19:23:43,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-21 19:23:43,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:43,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-21 19:23:43,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2021-10-21 19:23:43,566 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 37 states, 37 states have (on average 2.027027027027027) internal successors, (75), 37 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) [2021-10-21 19:23:43,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:43,856 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2021-10-21 19:23:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-21 19:23:43,857 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.027027027027027) internal successors, (75), 37 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 70 [2021-10-21 19:23:43,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:43,858 INFO L225 Difference]: With dead ends: 86 [2021-10-21 19:23:43,858 INFO L226 Difference]: Without dead ends: 80 [2021-10-21 19:23:43,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 538.0ms TimeCoverageRelationStatistics Valid=802, Invalid=1954, Unknown=0, NotChecked=0, Total=2756 [2021-10-21 19:23:43,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-21 19:23:43,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2021-10-21 19:23:43,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.04) internal successors, (78), 76 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:43,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2021-10-21 19:23:43,868 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 70 [2021-10-21 19:23:43,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:43,868 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2021-10-21 19:23:43,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.027027027027027) internal successors, (75), 37 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) [2021-10-21 19:23:43,869 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2021-10-21 19:23:43,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-21 19:23:43,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:43,872 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:43,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:44,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:44,082 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:44,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:44,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1923398057, now seen corresponding path program 17 times [2021-10-21 19:23:44,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:44,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306124544] [2021-10-21 19:23:44,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:44,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:44,589 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:44,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:44,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306124544] [2021-10-21 19:23:44,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306124544] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:44,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038495977] [2021-10-21 19:23:44,589 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:23:44,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:44,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:44,591 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:44,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-21 19:23:45,029 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-10-21 19:23:45,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:45,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-21 19:23:45,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:45,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038495977] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:45,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:45,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-10-21 19:23:45,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235280141] [2021-10-21 19:23:45,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-21 19:23:45,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:45,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-21 19:23:45,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2021-10-21 19:23:45,292 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 39 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 39 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) [2021-10-21 19:23:45,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:45,623 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2021-10-21 19:23:45,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-21 19:23:45,624 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 39 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 74 [2021-10-21 19:23:45,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:45,625 INFO L225 Difference]: With dead ends: 90 [2021-10-21 19:23:45,625 INFO L226 Difference]: Without dead ends: 84 [2021-10-21 19:23:45,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 634.3ms TimeCoverageRelationStatistics Valid=894, Invalid=2186, Unknown=0, NotChecked=0, Total=3080 [2021-10-21 19:23:45,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-21 19:23:45,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2021-10-21 19:23:45,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 80 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) [2021-10-21 19:23:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2021-10-21 19:23:45,629 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 74 [2021-10-21 19:23:45,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:45,630 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2021-10-21 19:23:45,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 39 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) [2021-10-21 19:23:45,632 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2021-10-21 19:23:45,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-21 19:23:45,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:45,633 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:45,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:45,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:45,842 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:45,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:45,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1202125989, now seen corresponding path program 18 times [2021-10-21 19:23:45,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:45,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429443023] [2021-10-21 19:23:45,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:45,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:46,354 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:46,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:46,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429443023] [2021-10-21 19:23:46,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429443023] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:46,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811500357] [2021-10-21 19:23:46,355 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:23:46,355 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:46,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:46,359 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:46,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-21 19:23:46,945 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-10-21 19:23:46,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:46,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 61 conjunts are in the unsatisfiable core [2021-10-21 19:23:46,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:47,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-21 19:23:47,226 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-21 19:23:47,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-21 19:23:47,338 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-21 19:23:47,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-21 19:23:47,447 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-21 19:23:47,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-21 19:23:47,563 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-21 19:23:47,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-21 19:23:47,684 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-21 19:23:47,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-21 19:23:47,812 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-21 19:23:47,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-21 19:23:47,937 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-21 19:23:47,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-21 19:23:48,062 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-21 19:23:48,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-21 19:23:48,125 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-10-21 19:23:48,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2021-10-21 19:23:48,324 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-10-21 19:23:48,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2021-10-21 19:23:48,476 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-10-21 19:23:48,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2021-10-21 19:23:48,628 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-10-21 19:23:48,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2021-10-21 19:23:48,796 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-10-21 19:23:48,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2021-10-21 19:23:48,945 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-10-21 19:23:48,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2021-10-21 19:23:49,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-21 19:23:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 105 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:49,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811500357] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:49,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:49,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 40] total 76 [2021-10-21 19:23:49,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143329358] [2021-10-21 19:23:49,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-10-21 19:23:49,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:49,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-10-21 19:23:49,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1032, Invalid=4668, Unknown=0, NotChecked=0, Total=5700 [2021-10-21 19:23:49,141 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 76 states, 76 states have (on average 1.986842105263158) internal successors, (151), 76 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:50,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:50,168 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2021-10-21 19:23:50,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-21 19:23:50,168 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.986842105263158) internal successors, (151), 76 states have internal predecessors, (151), 0 states have call successors, (0), 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 78 [2021-10-21 19:23:50,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:50,169 INFO L225 Difference]: With dead ends: 93 [2021-10-21 19:23:50,169 INFO L226 Difference]: Without dead ends: 87 [2021-10-21 19:23:50,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3427 ImplicationChecksByTransitivity, 2132.6ms TimeCoverageRelationStatistics Valid=2505, Invalid=9927, Unknown=0, NotChecked=0, Total=12432 [2021-10-21 19:23:50,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-21 19:23:50,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2021-10-21 19:23:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 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) [2021-10-21 19:23:50,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2021-10-21 19:23:50,178 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 78 [2021-10-21 19:23:50,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:50,178 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2021-10-21 19:23:50,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.986842105263158) internal successors, (151), 76 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:50,179 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2021-10-21 19:23:50,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-21 19:23:50,180 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:50,180 INFO L512 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:50,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:50,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-21 19:23:50,401 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:23:50,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:50,402 INFO L82 PathProgramCache]: Analyzing trace with hash 145436095, now seen corresponding path program 1 times [2021-10-21 19:23:50,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:50,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613010302] [2021-10-21 19:23:50,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:50,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:50,442 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2021-10-21 19:23:50,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:50,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613010302] [2021-10-21 19:23:50,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613010302] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:23:50,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:23:50,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:23:50,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925893279] [2021-10-21 19:23:50,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:23:50,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:50,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:23:50,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:23:50,444 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:50,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:50,454 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-10-21 19:23:50,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:23:50,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 83 [2021-10-21 19:23:50,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:50,455 INFO L225 Difference]: With dead ends: 84 [2021-10-21 19:23:50,455 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:23:50,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:23:50,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:23:50,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:23:50,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:50,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:23:50,456 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2021-10-21 19:23:50,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:50,457 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:23:50,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:23:50,457 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:23:50,460 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:23:50,460 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:23:50,460 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:23:50,461 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:23:50,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-21 19:23:50,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:23:50,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:23:50,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:23:50,557 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2021-10-21 19:23:50,557 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:23:50,557 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-21 19:23:50,557 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 19) no Hoare annotation was computed. [2021-10-21 19:23:50,557 INFO L857 garLoopResultBuilder]: For program point L17-2(lines 10 21) no Hoare annotation was computed. [2021-10-21 19:23:50,558 INFO L857 garLoopResultBuilder]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2021-10-21 19:23:50,558 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2021-10-21 19:23:50,558 INFO L857 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2021-10-21 19:23:50,558 INFO L857 garLoopResultBuilder]: For program point L13-4(line 13) no Hoare annotation was computed. [2021-10-21 19:23:50,558 INFO L853 garLoopResultBuilder]: At program point L13-5(lines 13 15) the Hoare annotation is: (or (and (<= 4 ULTIMATE.start_main_~i~0) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0.base|) (+ |ULTIMATE.start_main_~#a~0.offset| 12)) 2147483647)) (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~i~0 1) (= ULTIMATE.start_main_~i~0 2) (= ULTIMATE.start_main_~i~0 3)) [2021-10-21 19:23:50,559 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:23:50,559 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2021-10-21 19:23:50,559 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-21 19:23:50,559 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:23:50,559 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:23:50,559 INFO L860 garLoopResultBuilder]: At program point L20(lines 10 21) the Hoare annotation is: true [2021-10-21 19:23:50,560 INFO L857 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-10-21 19:23:50,560 INFO L857 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-10-21 19:23:50,564 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:23:50,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:23:50 BoogieIcfgContainer [2021-10-21 19:23:50,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:23:50,577 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:23:50,577 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:23:50,578 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:23:50,578 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:23:27" (3/4) ... [2021-10-21 19:23:50,581 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:23:50,603 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-21 19:23:50,604 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-21 19:23:50,604 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:23:50,646 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:23:50,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:23:50,647 INFO L168 Benchmark]: Toolchain (without parser) took 23464.61 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 57.0 MB in the beginning and 34.7 MB in the end (delta: 22.3 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:23:50,648 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory was 60.8 MB in the beginning and 60.7 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:23:50,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.55 ms. Allocated memory is still 90.2 MB. Free memory was 56.6 MB in the beginning and 67.8 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:23:50,649 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.58 ms. Allocated memory is still 90.2 MB. Free memory was 67.8 MB in the beginning and 66.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:23:50,649 INFO L168 Benchmark]: Boogie Preprocessor took 21.25 ms. Allocated memory is still 90.2 MB. Free memory was 66.4 MB in the beginning and 65.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:23:50,649 INFO L168 Benchmark]: RCFGBuilder took 267.50 ms. Allocated memory is still 90.2 MB. Free memory was 65.3 MB in the beginning and 56.9 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:23:50,650 INFO L168 Benchmark]: TraceAbstraction took 22739.62 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 56.3 MB in the beginning and 37.0 MB in the end (delta: 19.3 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:23:50,650 INFO L168 Benchmark]: Witness Printer took 69.39 ms. Allocated memory is still 111.1 MB. Free memory was 37.0 MB in the beginning and 34.7 MB in the end (delta: 2.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:23:50,655 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory was 60.8 MB in the beginning and 60.7 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 323.55 ms. Allocated memory is still 90.2 MB. Free memory was 56.6 MB in the beginning and 67.8 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.58 ms. Allocated memory is still 90.2 MB. Free memory was 67.8 MB in the beginning and 66.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.25 ms. Allocated memory is still 90.2 MB. Free memory was 66.4 MB in the beginning and 65.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 267.50 ms. Allocated memory is still 90.2 MB. Free memory was 65.3 MB in the beginning and 56.9 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22739.62 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 56.3 MB in the beginning and 37.0 MB in the end (delta: 19.3 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. * Witness Printer took 69.39 ms. Allocated memory is still 111.1 MB. Free memory was 37.0 MB in the beginning and 34.7 MB in the end (delta: 2.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 22641.4ms, OverallIterations: 22, TraceHistogramMax: 19, EmptinessCheckTime: 34.3ms, AutomataDifference: 4184.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 95.1ms, InitialAbstractionConstructionTime: 13.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 196 SDtfs, 1189 SDslu, 762 SDs, 0 SdLazy, 1895 SolverSat, 175 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1163.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1387 GetRequests, 751 SyntacticMatches, 0 SemanticMatches, 636 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6952 ImplicationChecksByTransitivity, 6804.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=21, InterpolantAutomatonStates: 419, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 136.1ms AutomataMinimizationTime, 22 MinimizatonAttempts, 55 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 22 NumberOfFragments, 27 HoareAnnotationTreeSize, 2 FomulaSimplifications, 168 FormulaSimplificationTreeSizeReduction, 23.8ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 188 FormulaSimplificationTreeSizeReductionInter, 65.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 170.1ms SsaConstructionTime, 1604.0ms SatisfiabilityAnalysisTime, 9782.2ms InterpolantComputationTime, 1701 NumberOfCodeBlocks, 1697 NumberOfCodeBlocksAsserted, 142 NumberOfCheckSat, 1660 ConstructedInterpolants, 0 QuantifiedInterpolants, 5128 SizeOfPredicates, 176 NumberOfNonLiveVariables, 2186 ConjunctsInSsa, 405 ConjunctsInUnsatCore, 41 InterpolantComputations, 4 PerfectInterpolantSequences, 815/8808 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: ((((4 <= i && unknown-#memory_int-unknown[a][a + 12] <= 2147483647) || i == 0) || i == 1) || i == 2) || i == 3 RESULT: Ultimate proved your program to be correct! [2021-10-21 19:23:50,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_928dbc7b-0123-4f17-99e8-31cf610e903d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...