./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/TwoWay.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/TwoWay.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3 --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 dd635190a9aa277670265f46b90ecce0c321a2a9 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:47:14,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:47:14,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:47:14,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:47:14,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:47:14,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:47:14,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:47:14,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:47:14,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:47:14,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:47:14,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:47:14,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:47:14,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:47:14,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:47:14,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:47:14,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:47:14,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:47:14,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:47:14,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:47:14,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:47:14,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:47:14,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:47:14,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:47:14,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:47:14,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:47:14,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:47:14,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:47:14,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:47:14,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:47:14,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:47:14,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:47:14,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:47:14,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:47:14,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:47:14,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:47:14,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:47:14,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:47:14,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:47:14,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:47:14,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:47:14,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:47:14,554 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-15 19:47:14,593 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:47:14,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:47:14,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:47:14,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:47:14,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:47:14,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:47:14,596 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:47:14,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:47:14,597 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-15 19:47:14,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:47:14,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:47:14,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:47:14,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:47:14,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:47:14,598 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-15 19:47:14,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:47:14,599 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:47:14,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:47:14,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:47:14,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:47:14,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:47:14,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:47:14,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:47:14,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:47:14,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:47:14,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:47:14,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:47:14,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:47:14,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:47:14,602 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_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd635190a9aa277670265f46b90ecce0c321a2a9 [2021-10-15 19:47:14,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:47:14,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:47:14,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:47:14,907 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:47:14,908 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:47:14,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/termination-numeric/TwoWay.c [2021-10-15 19:47:14,992 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/data/85bc79f6d/d87c53b069a14cf3933da1c55f9c8c85/FLAGf83233fd2 [2021-10-15 19:47:15,473 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:47:15,474 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/sv-benchmarks/c/termination-numeric/TwoWay.c [2021-10-15 19:47:15,487 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/data/85bc79f6d/d87c53b069a14cf3933da1c55f9c8c85/FLAGf83233fd2 [2021-10-15 19:47:15,848 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/data/85bc79f6d/d87c53b069a14cf3933da1c55f9c8c85 [2021-10-15 19:47:15,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:47:15,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:47:15,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:47:15,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:47:15,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:47:15,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:47:15" (1/1) ... [2021-10-15 19:47:15,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69fb2e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:15, skipping insertion in model container [2021-10-15 19:47:15,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:47:15" (1/1) ... [2021-10-15 19:47:15,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:47:15,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:47:16,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:47:16,124 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:47:16,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:47:16,151 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:47:16,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:16 WrapperNode [2021-10-15 19:47:16,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:47:16,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:47:16,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:47:16,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:47:16,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:16" (1/1) ... [2021-10-15 19:47:16,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:16" (1/1) ... [2021-10-15 19:47:16,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:47:16,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:47:16,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:47:16,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:47:16,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:16" (1/1) ... [2021-10-15 19:47:16,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:16" (1/1) ... [2021-10-15 19:47:16,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:16" (1/1) ... [2021-10-15 19:47:16,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:16" (1/1) ... [2021-10-15 19:47:16,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:16" (1/1) ... [2021-10-15 19:47:16,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:16" (1/1) ... [2021-10-15 19:47:16,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:16" (1/1) ... [2021-10-15 19:47:16,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:47:16,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:47:16,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:47:16,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:47:16,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:16" (1/1) ... [2021-10-15 19:47:16,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:47:16,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:47:16,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:47:16,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:47:16,283 INFO L130 BoogieDeclarations]: Found specification of procedure twoWay [2021-10-15 19:47:16,283 INFO L138 BoogieDeclarations]: Found implementation of procedure twoWay [2021-10-15 19:47:16,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:47:16,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:47:16,531 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:47:16,531 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-15 19:47:16,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:47:16 BoogieIcfgContainer [2021-10-15 19:47:16,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:47:16,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:47:16,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:47:16,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:47:16,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:47:15" (1/3) ... [2021-10-15 19:47:16,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a8742e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:47:16, skipping insertion in model container [2021-10-15 19:47:16,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:16" (2/3) ... [2021-10-15 19:47:16,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a8742e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:47:16, skipping insertion in model container [2021-10-15 19:47:16,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:47:16" (3/3) ... [2021-10-15 19:47:16,542 INFO L111 eAbstractionObserver]: Analyzing ICFG TwoWay.c [2021-10-15 19:47:16,548 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:47:16,548 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-15 19:47:16,596 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:47:16,603 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, mConcurrency=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 [2021-10-15 19:47:16,603 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-15 19:47:16,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 17 states have (on average 1.588235294117647) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-15 19:47:16,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-15 19:47:16,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:47:16,625 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:47:16,625 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-15 19:47:16,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:47:16,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1734939443, now seen corresponding path program 1 times [2021-10-15 19:47:16,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:47:16,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947101108] [2021-10-15 19:47:16,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:47:16,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:47:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:47:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:47:16,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:47:16,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947101108] [2021-10-15 19:47:16,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947101108] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:47:16,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:47:16,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:47:16,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024308434] [2021-10-15 19:47:16,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:47:16,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:47:16,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:47:16,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:47:16,853 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.588235294117647) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:47:17,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:47:17,042 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2021-10-15 19:47:17,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 19:47:17,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-15 19:47:17,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:47:17,053 INFO L225 Difference]: With dead ends: 56 [2021-10-15 19:47:17,053 INFO L226 Difference]: Without dead ends: 51 [2021-10-15 19:47:17,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.9ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-15 19:47:17,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-15 19:47:17,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 37. [2021-10-15 19:47:17,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 25 states have (on average 1.6) internal successors, (40), 32 states have internal predecessors, (40), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-15 19:47:17,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2021-10-15 19:47:17,113 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 8 [2021-10-15 19:47:17,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:47:17,114 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2021-10-15 19:47:17,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:47:17,115 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2021-10-15 19:47:17,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-15 19:47:17,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:47:17,117 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:47:17,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:47:17,117 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-15 19:47:17,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:47:17,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1734939635, now seen corresponding path program 1 times [2021-10-15 19:47:17,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:47:17,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514372108] [2021-10-15 19:47:17,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:47:17,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:47:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:47:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:47:17,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:47:17,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514372108] [2021-10-15 19:47:17,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514372108] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:47:17,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:47:17,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:47:17,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815142258] [2021-10-15 19:47:17,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:47:17,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:47:17,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:47:17,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:47:17,217 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:47:17,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:47:17,255 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2021-10-15 19:47:17,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:47:17,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-15 19:47:17,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:47:17,258 INFO L225 Difference]: With dead ends: 45 [2021-10-15 19:47:17,259 INFO L226 Difference]: Without dead ends: 18 [2021-10-15 19:47:17,260 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:47:17,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-15 19:47:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-15 19:47:17,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 15 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:47:17,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-15 19:47:17,268 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2021-10-15 19:47:17,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:47:17,268 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-15 19:47:17,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:47:17,270 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-15 19:47:17,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-15 19:47:17,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:47:17,273 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:47:17,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:47:17,274 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-15 19:47:17,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:47:17,275 INFO L82 PathProgramCache]: Analyzing trace with hash -2051452074, now seen corresponding path program 1 times [2021-10-15 19:47:17,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:47:17,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608369717] [2021-10-15 19:47:17,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:47:17,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:47:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:47:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:47:17,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:47:17,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608369717] [2021-10-15 19:47:17,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608369717] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:47:17,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:47:17,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:47:17,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204040242] [2021-10-15 19:47:17,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:47:17,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:47:17,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:47:17,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:47:17,326 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:47:17,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:47:17,345 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-10-15 19:47:17,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:47:17,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-15 19:47:17,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:47:17,346 INFO L225 Difference]: With dead ends: 18 [2021-10-15 19:47:17,347 INFO L226 Difference]: Without dead ends: 17 [2021-10-15 19:47:17,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:47:17,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-15 19:47:17,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-15 19:47:17,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:47:17,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-15 19:47:17,351 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2021-10-15 19:47:17,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:47:17,351 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-15 19:47:17,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:47:17,352 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-15 19:47:17,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-15 19:47:17,353 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:47:17,353 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:47:17,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:47:17,353 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-15 19:47:17,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:47:17,354 INFO L82 PathProgramCache]: Analyzing trace with hash 2048642091, now seen corresponding path program 1 times [2021-10-15 19:47:17,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:47:17,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44468969] [2021-10-15 19:47:17,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:47:17,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:47:17,372 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:47:17,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559714897] [2021-10-15 19:47:17,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:47:17,373 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:47:17,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:47:17,384 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:47:17,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:47:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:47:17,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-15 19:47:17,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:47:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-15 19:47:17,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:47:17,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44468969] [2021-10-15 19:47:17,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:47:17,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559714897] [2021-10-15 19:47:17,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559714897] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:47:17,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:47:17,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:47:17,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356136527] [2021-10-15 19:47:17,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:47:17,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:47:17,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:47:17,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:47:17,689 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:47:17,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:47:17,754 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-10-15 19:47:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:47:17,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-15 19:47:17,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:47:17,756 INFO L225 Difference]: With dead ends: 24 [2021-10-15 19:47:17,756 INFO L226 Difference]: Without dead ends: 23 [2021-10-15 19:47:17,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 42.6ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:47:17,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-15 19:47:17,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2021-10-15 19:47:17,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-15 19:47:17,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-10-15 19:47:17,769 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2021-10-15 19:47:17,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:47:17,770 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-10-15 19:47:17,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:47:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-10-15 19:47:17,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-15 19:47:17,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:47:17,773 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:47:17,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:47:17,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:47:17,997 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-15 19:47:17,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:47:17,997 INFO L82 PathProgramCache]: Analyzing trace with hash -916604565, now seen corresponding path program 1 times [2021-10-15 19:47:17,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:47:17,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485398409] [2021-10-15 19:47:17,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:47:17,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:47:18,025 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:47:18,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012276697] [2021-10-15 19:47:18,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:47:18,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:47:18,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:47:18,027 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:47:18,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-15 19:47:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:47:18,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-15 19:47:18,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:47:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-15 19:47:18,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:47:18,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485398409] [2021-10-15 19:47:18,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:47:18,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012276697] [2021-10-15 19:47:18,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012276697] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:47:18,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:47:18,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:47:18,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702607876] [2021-10-15 19:47:18,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:47:18,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:47:18,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:47:18,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:47:18,287 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:47:18,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:47:18,421 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-15 19:47:18,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:47:18,422 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-15 19:47:18,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:47:18,423 INFO L225 Difference]: With dead ends: 23 [2021-10-15 19:47:18,423 INFO L226 Difference]: Without dead ends: 22 [2021-10-15 19:47:18,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-15 19:47:18,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-15 19:47:18,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-15 19:47:18,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-15 19:47:18,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-10-15 19:47:18,427 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2021-10-15 19:47:18,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:47:18,428 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-10-15 19:47:18,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:47:18,428 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-10-15 19:47:18,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-15 19:47:18,429 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:47:18,429 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:47:18,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:47:18,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:47:18,645 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-15 19:47:18,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:47:18,645 INFO L82 PathProgramCache]: Analyzing trace with hash 37921722, now seen corresponding path program 1 times [2021-10-15 19:47:18,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:47:18,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63788929] [2021-10-15 19:47:18,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:47:18,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:47:18,660 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:47:18,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116548519] [2021-10-15 19:47:18,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:47:18,660 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:47:18,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:47:18,661 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:47:18,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-15 19:47:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:47:18,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-15 19:47:18,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:47:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-15 19:47:19,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:47:19,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63788929] [2021-10-15 19:47:19,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:47:19,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116548519] [2021-10-15 19:47:19,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116548519] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:47:19,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:47:19,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-15 19:47:19,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924003515] [2021-10-15 19:47:19,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-15 19:47:19,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:47:19,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-15 19:47:19,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-15 19:47:19,390 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-15 19:47:19,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:47:19,592 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-10-15 19:47:19,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 19:47:19,593 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2021-10-15 19:47:19,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:47:19,594 INFO L225 Difference]: With dead ends: 29 [2021-10-15 19:47:19,594 INFO L226 Difference]: Without dead ends: 28 [2021-10-15 19:47:19,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 177.0ms TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-10-15 19:47:19,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-15 19:47:19,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2021-10-15 19:47:19,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-15 19:47:19,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-10-15 19:47:19,604 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 27 [2021-10-15 19:47:19,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:47:19,604 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-10-15 19:47:19,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-15 19:47:19,605 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-10-15 19:47:19,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-15 19:47:19,607 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:47:19,607 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:47:19,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:47:19,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:47:19,821 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-15 19:47:19,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:47:19,821 INFO L82 PathProgramCache]: Analyzing trace with hash -2097168606, now seen corresponding path program 1 times [2021-10-15 19:47:19,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:47:19,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395437581] [2021-10-15 19:47:19,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:47:19,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:47:19,837 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:47:19,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495670154] [2021-10-15 19:47:19,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:47:19,838 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:47:19,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:47:19,839 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:47:19,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-15 19:47:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:47:19,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-15 19:47:19,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:47:20,511 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-15 19:47:20,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:47:20,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395437581] [2021-10-15 19:47:20,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:47:20,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495670154] [2021-10-15 19:47:20,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495670154] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:47:20,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:47:20,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-15 19:47:20,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330379913] [2021-10-15 19:47:20,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-15 19:47:20,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:47:20,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-15 19:47:20,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-15 19:47:20,515 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-15 19:47:20,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:47:20,778 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2021-10-15 19:47:20,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-15 19:47:20,778 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-10-15 19:47:20,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:47:20,779 INFO L225 Difference]: With dead ends: 28 [2021-10-15 19:47:20,779 INFO L226 Difference]: Without dead ends: 27 [2021-10-15 19:47:20,780 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 207.9ms TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-10-15 19:47:20,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-15 19:47:20,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-15 19:47:20,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-15 19:47:20,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-15 19:47:20,784 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 34 [2021-10-15 19:47:20,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:47:20,784 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-15 19:47:20,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-15 19:47:20,785 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-15 19:47:20,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-15 19:47:20,786 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:47:20,786 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-15 19:47:20,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:47:20,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:47:20,987 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-15 19:47:20,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:47:20,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1826938493, now seen corresponding path program 2 times [2021-10-15 19:47:20,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:47:20,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708555508] [2021-10-15 19:47:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:47:20,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:47:21,010 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:47:21,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766878715] [2021-10-15 19:47:21,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 19:47:21,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:47:21,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:47:21,021 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:47:21,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-15 19:47:21,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 19:47:21,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:47:21,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-15 19:47:21,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:47:21,495 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 19 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-15 19:47:21,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:47:21,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708555508] [2021-10-15 19:47:21,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:47:21,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766878715] [2021-10-15 19:47:21,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766878715] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:47:21,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:47:21,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-15 19:47:21,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328154643] [2021-10-15 19:47:21,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-15 19:47:21,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:47:21,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-15 19:47:21,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-10-15 19:47:21,508 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 15 states, 12 states have (on average 2.5) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-15 19:47:21,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:47:21,815 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-10-15 19:47:21,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-15 19:47:21,816 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.5) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 44 [2021-10-15 19:47:21,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:47:21,817 INFO L225 Difference]: With dead ends: 36 [2021-10-15 19:47:21,817 INFO L226 Difference]: Without dead ends: 35 [2021-10-15 19:47:21,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 297.8ms TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-10-15 19:47:21,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-15 19:47:21,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2021-10-15 19:47:21,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-15 19:47:21,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-10-15 19:47:21,823 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 44 [2021-10-15 19:47:21,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:47:21,828 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-10-15 19:47:21,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.5) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-15 19:47:21,828 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-10-15 19:47:21,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-15 19:47:21,831 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:47:21,831 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2021-10-15 19:47:21,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-15 19:47:22,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-15 19:47:22,032 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-15 19:47:22,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:47:22,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1355949953, now seen corresponding path program 2 times [2021-10-15 19:47:22,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:47:22,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727197049] [2021-10-15 19:47:22,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:47:22,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:47:22,047 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:47:22,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [362170732] [2021-10-15 19:47:22,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 19:47:22,048 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:47:22,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:47:22,049 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:47:22,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-15 19:47:22,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 19:47:22,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:47:22,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-15 19:47:22,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:47:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-15 19:47:22,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:47:22,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727197049] [2021-10-15 19:47:22,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:47:22,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362170732] [2021-10-15 19:47:22,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362170732] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:47:22,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:47:22,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-15 19:47:22,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270966542] [2021-10-15 19:47:22,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-15 19:47:22,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:47:22,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-15 19:47:22,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-10-15 19:47:22,487 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-15 19:47:22,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:47:22,768 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2021-10-15 19:47:22,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-15 19:47:22,769 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2021-10-15 19:47:22,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:47:22,770 INFO L225 Difference]: With dead ends: 35 [2021-10-15 19:47:22,770 INFO L226 Difference]: Without dead ends: 34 [2021-10-15 19:47:22,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 259.9ms TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-10-15 19:47:22,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-15 19:47:22,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-10-15 19:47:22,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-15 19:47:22,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-10-15 19:47:22,776 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 39 [2021-10-15 19:47:22,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:47:22,776 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-10-15 19:47:22,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-15 19:47:22,777 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-10-15 19:47:22,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-15 19:47:22,778 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:47:22,779 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-15 19:47:22,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-15 19:47:22,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:47:22,997 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-15 19:47:22,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:47:22,997 INFO L82 PathProgramCache]: Analyzing trace with hash 312609192, now seen corresponding path program 3 times [2021-10-15 19:47:22,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:47:22,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073713390] [2021-10-15 19:47:22,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:47:22,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:47:23,012 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:47:23,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506938977] [2021-10-15 19:47:23,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-15 19:47:23,013 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:47:23,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:47:23,014 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:47:23,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-15 19:47:23,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-15 19:47:23,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:47:23,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-15 19:47:23,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:47:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-10-15 19:47:23,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:47:23,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073713390] [2021-10-15 19:47:23,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:47:23,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506938977] [2021-10-15 19:47:23,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506938977] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:47:23,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:47:23,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-15 19:47:23,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313989120] [2021-10-15 19:47:23,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-15 19:47:23,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:47:23,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-15 19:47:23,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-10-15 19:47:23,468 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 12 states, 10 states have (on average 2.8) internal successors, (28), 12 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-15 19:47:23,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:47:23,667 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-10-15 19:47:23,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-15 19:47:23,667 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.8) internal successors, (28), 12 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 55 [2021-10-15 19:47:23,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:47:23,668 INFO L225 Difference]: With dead ends: 32 [2021-10-15 19:47:23,668 INFO L226 Difference]: Without dead ends: 0 [2021-10-15 19:47:23,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 173.7ms TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2021-10-15 19:47:23,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-15 19:47:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-15 19:47:23,669 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) [2021-10-15 19:47:23,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-15 19:47:23,670 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2021-10-15 19:47:23,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:47:23,670 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-15 19:47:23,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.8) internal successors, (28), 12 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-15 19:47:23,670 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-15 19:47:23,670 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-15 19:47:23,673 INFO L764 garLoopResultBuilder]: Registering result SAFE for location twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 19:47:23,673 INFO L764 garLoopResultBuilder]: Registering result SAFE for location twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 19:47:23,674 INFO L764 garLoopResultBuilder]: Registering result SAFE for location twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 19:47:23,674 INFO L764 garLoopResultBuilder]: Registering result SAFE for location twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 19:47:23,674 INFO L764 garLoopResultBuilder]: Registering result SAFE for location twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 19:47:23,674 INFO L764 garLoopResultBuilder]: Registering result SAFE for location twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 19:47:23,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-15 19:47:23,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-15 19:47:23,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-15 19:47:23,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-15 19:47:23,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-15 19:47:23,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-15 19:47:23,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-15 19:47:23,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-15 19:47:23,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-15 19:47:23,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-15 19:47:23,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-15 19:47:23,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-15 19:47:23,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-15 19:47:23,939 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 35) no Hoare annotation was computed. [2021-10-15 19:47:23,939 INFO L853 garLoopResultBuilder]: At program point L31-2(lines 31 35) the Hoare annotation is: (or (not (<= 1 |twoWay_#in~terminate|)) (and (<= 1 twoWay_~terminate) (= (+ 1 twoWay_~m~0) |twoWay_#in~n|) (<= |twoWay_#in~n| twoWay_~n) (<= twoWay_~n |twoWay_#in~n|) (<= 0 |twoWay_#in~n|)) (not (<= |twoWay_#in~n| 2147483647))) [2021-10-15 19:47:23,939 INFO L857 garLoopResultBuilder]: For program point L27(lines 27 37) no Hoare annotation was computed. [2021-10-15 19:47:23,939 INFO L857 garLoopResultBuilder]: For program point twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2021-10-15 19:47:23,940 INFO L857 garLoopResultBuilder]: For program point twoWayFINAL(lines 26 38) no Hoare annotation was computed. [2021-10-15 19:47:23,940 INFO L857 garLoopResultBuilder]: For program point twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2021-10-15 19:47:23,940 INFO L857 garLoopResultBuilder]: For program point twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2021-10-15 19:47:23,940 INFO L857 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2021-10-15 19:47:23,940 INFO L857 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2021-10-15 19:47:23,940 INFO L857 garLoopResultBuilder]: For program point L34(line 34) no Hoare annotation was computed. [2021-10-15 19:47:23,940 INFO L857 garLoopResultBuilder]: For program point L36-2(line 36) no Hoare annotation was computed. [2021-10-15 19:47:23,940 INFO L857 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed. [2021-10-15 19:47:23,941 INFO L857 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-10-15 19:47:23,941 INFO L857 garLoopResultBuilder]: For program point L32-1(line 32) no Hoare annotation was computed. [2021-10-15 19:47:23,941 INFO L860 garLoopResultBuilder]: At program point twoWayENTRY(lines 26 38) the Hoare annotation is: true [2021-10-15 19:47:23,941 INFO L857 garLoopResultBuilder]: For program point twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2021-10-15 19:47:23,941 INFO L857 garLoopResultBuilder]: For program point twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2021-10-15 19:47:23,941 INFO L857 garLoopResultBuilder]: For program point twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2021-10-15 19:47:23,941 INFO L857 garLoopResultBuilder]: For program point twoWayEXIT(lines 26 38) no Hoare annotation was computed. [2021-10-15 19:47:23,941 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-15 19:47:23,942 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-15 19:47:23,942 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-15 19:47:23,942 INFO L853 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-10-15 19:47:23,942 INFO L857 garLoopResultBuilder]: For program point L48-1(line 48) no Hoare annotation was computed. [2021-10-15 19:47:23,942 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 46) no Hoare annotation was computed. [2021-10-15 19:47:23,942 INFO L857 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2021-10-15 19:47:23,942 INFO L853 garLoopResultBuilder]: At program point L40(lines 40 50) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-10-15 19:47:23,947 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:47:23,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:47:23 BoogieIcfgContainer [2021-10-15 19:47:23,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:47:23,958 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:47:23,958 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:47:23,958 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:47:23,959 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:47:16" (3/4) ... [2021-10-15 19:47:23,962 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:47:23,967 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure twoWay [2021-10-15 19:47:23,972 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-15 19:47:23,972 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-15 19:47:24,003 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:47:24,003 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:47:24,005 INFO L168 Benchmark]: Toolchain (without parser) took 8149.80 ms. Allocated memory was 96.5 MB in the beginning and 144.7 MB in the end (delta: 48.2 MB). Free memory was 63.5 MB in the beginning and 76.9 MB in the end (delta: -13.4 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:24,005 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory is still 52.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:47:24,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.60 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 63.5 MB in the beginning and 95.6 MB in the end (delta: -32.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:24,006 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.78 ms. Allocated memory is still 119.5 MB. Free memory was 95.6 MB in the beginning and 94.7 MB in the end (delta: 956.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:47:24,006 INFO L168 Benchmark]: Boogie Preprocessor took 16.89 ms. Allocated memory is still 119.5 MB. Free memory was 94.7 MB in the beginning and 93.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:24,007 INFO L168 Benchmark]: RCFGBuilder took 333.61 ms. Allocated memory is still 119.5 MB. Free memory was 93.5 MB in the beginning and 84.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:24,007 INFO L168 Benchmark]: TraceAbstraction took 7422.20 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 84.2 MB in the beginning and 80.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 32.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:24,008 INFO L168 Benchmark]: Witness Printer took 45.57 ms. Allocated memory is still 144.7 MB. Free memory was 80.0 MB in the beginning and 76.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:24,010 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory is still 52.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.60 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 63.5 MB in the beginning and 95.6 MB in the end (delta: -32.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.78 ms. Allocated memory is still 119.5 MB. Free memory was 95.6 MB in the beginning and 94.7 MB in the end (delta: 956.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.89 ms. Allocated memory is still 119.5 MB. Free memory was 94.7 MB in the beginning and 93.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 333.61 ms. Allocated memory is still 119.5 MB. Free memory was 93.5 MB in the beginning and 84.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7422.20 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 84.2 MB in the beginning and 80.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 32.5 MB. Max. memory is 16.1 GB. * Witness Printer took 45.57 ms. Allocated memory is still 144.7 MB. Free memory was 80.0 MB in the beginning and 76.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. 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: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: 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 2 procedures, 27 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 7352.3ms, OverallIterations: 10, TraceHistogramMax: 6, EmptinessCheckTime: 23.9ms, AutomataDifference: 1761.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 63.3ms, InitialAbstractionConstructionTime: 11.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 130 SDtfs, 391 SDslu, 511 SDs, 0 SdLazy, 863 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 624.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 293 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1357.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=1, InterpolantAutomatonStates: 84, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 88.3ms AutomataMinimizationTime, 10 MinimizatonAttempts, 24 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 34 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 23.1ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 25 FormulaSimplificationTreeSizeReductionInter, 33.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 51.1ms SsaConstructionTime, 170.9ms SatisfiabilityAnalysisTime, 2833.7ms InterpolantComputationTime, 257 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 247 ConstructedInterpolants, 9 QuantifiedInterpolants, 991 SizeOfPredicates, 30 NumberOfNonLiveVariables, 640 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 166/240 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 6 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: x <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-10-15 19:47:24,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630bed34-64c7-4028-9bf0-83da5ccea10f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...