./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/aviad.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/aviad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0 --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 212c9b1b6a93f8f17548e7937584929a6b6ed1677eb6287f5deae898fbaeb3a4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:37:52,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:37:52,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:37:52,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:37:52,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:37:52,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:37:52,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:37:52,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:37:52,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:37:52,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:37:52,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:37:52,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:37:52,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:37:52,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:37:52,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:37:52,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:37:52,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:37:52,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:37:52,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:37:52,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:37:52,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:37:52,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:37:52,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:37:52,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:37:52,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:37:52,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:37:52,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:37:52,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:37:52,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:37:52,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:37:52,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:37:52,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:37:52,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:37:52,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:37:52,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:37:52,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:37:52,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:37:52,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:37:52,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:37:52,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:37:52,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:37:52,678 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-11-22 15:37:52,705 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:37:52,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:37:52,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:37:52,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:37:52,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:37:52,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:37:52,716 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:37:52,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:37:52,717 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 15:37:52,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:37:52,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:37:52,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:37:52,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:37:52,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:37:52,719 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-22 15:37:52,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:37:52,721 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:37:52,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:37:52,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:37:52,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:37:52,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:37:52,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:37:52,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:37:52,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:37:52,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:37:52,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:37:52,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:37:52,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:37:52,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:37:52,727 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_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 212c9b1b6a93f8f17548e7937584929a6b6ed1677eb6287f5deae898fbaeb3a4 [2021-11-22 15:37:53,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:37:53,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:37:53,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:37:53,056 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:37:53,059 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:37:53,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/termination-crafted-lit/aviad.c [2021-11-22 15:37:53,129 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/data/2cf669e0c/270f32d2020e412f9b435dbdd8bc7920/FLAG21dd689c4 [2021-11-22 15:37:53,584 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:37:53,585 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/sv-benchmarks/c/termination-crafted-lit/aviad.c [2021-11-22 15:37:53,597 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/data/2cf669e0c/270f32d2020e412f9b435dbdd8bc7920/FLAG21dd689c4 [2021-11-22 15:37:53,973 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/data/2cf669e0c/270f32d2020e412f9b435dbdd8bc7920 [2021-11-22 15:37:53,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:37:53,977 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:37:53,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:37:53,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:37:53,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:37:53,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:37:53" (1/1) ... [2021-11-22 15:37:53,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50f79aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:53, skipping insertion in model container [2021-11-22 15:37:53,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:37:53" (1/1) ... [2021-11-22 15:37:54,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:37:54,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:37:54,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:37:54,162 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:37:54,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:37:54,187 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:37:54,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:54 WrapperNode [2021-11-22 15:37:54,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:37:54,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:37:54,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:37:54,190 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:37:54,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:54" (1/1) ... [2021-11-22 15:37:54,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:54" (1/1) ... [2021-11-22 15:37:54,226 INFO L137 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2021-11-22 15:37:54,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:37:54,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:37:54,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:37:54,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:37:54,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:54" (1/1) ... [2021-11-22 15:37:54,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:54" (1/1) ... [2021-11-22 15:37:54,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:54" (1/1) ... [2021-11-22 15:37:54,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:54" (1/1) ... [2021-11-22 15:37:54,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:54" (1/1) ... [2021-11-22 15:37:54,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:54" (1/1) ... [2021-11-22 15:37:54,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:54" (1/1) ... [2021-11-22 15:37:54,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:37:54,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:37:54,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:37:54,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:37:54,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:54" (1/1) ... [2021-11-22 15:37:54,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:37:54,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:37:54,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:37:54,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:37:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:37:54,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:37:54,377 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:37:54,378 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:37:54,495 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:37:54,502 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:37:54,502 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 15:37:54,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:37:54 BoogieIcfgContainer [2021-11-22 15:37:54,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:37:54,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:37:54,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:37:54,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:37:54,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:37:53" (1/3) ... [2021-11-22 15:37:54,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e99bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:37:54, skipping insertion in model container [2021-11-22 15:37:54,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:54" (2/3) ... [2021-11-22 15:37:54,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e99bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:37:54, skipping insertion in model container [2021-11-22 15:37:54,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:37:54" (3/3) ... [2021-11-22 15:37:54,512 INFO L111 eAbstractionObserver]: Analyzing ICFG aviad.c [2021-11-22 15:37:54,518 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:37:54,518 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-22 15:37:54,569 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:37:54,576 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:37:54,577 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-22 15:37:54,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.6) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:54,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-22 15:37:54,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:54,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-22 15:37:54,600 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-22 15:37:54,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:54,606 INFO L85 PathProgramCache]: Analyzing trace with hash 28699945, now seen corresponding path program 1 times [2021-11-22 15:37:54,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:54,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045793726] [2021-11-22 15:37:54,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:54,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:54,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:54,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045793726] [2021-11-22 15:37:54,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045793726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:37:54,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:37:54,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:37:54,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885689986] [2021-11-22 15:37:54,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:37:54,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:37:54,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:54,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:37:54,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:37:54,798 INFO L87 Difference]: Start difference. First operand has 22 states, 15 states have (on average 1.6) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:54,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:54,835 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-11-22 15:37:54,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:37:54,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-22 15:37:54,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:54,846 INFO L225 Difference]: With dead ends: 27 [2021-11-22 15:37:54,846 INFO L226 Difference]: Without dead ends: 15 [2021-11-22 15:37:54,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:37:54,869 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 15 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:37:54,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 14 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:37:54,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-22 15:37:54,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-22 15:37:54,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-11-22 15:37:54,933 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 5 [2021-11-22 15:37:54,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:54,934 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-22 15:37:54,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:54,935 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-11-22 15:37:54,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 15:37:54,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:54,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 15:37:54,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:37:54,936 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-22 15:37:54,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:54,952 INFO L85 PathProgramCache]: Analyzing trace with hash 889698349, now seen corresponding path program 1 times [2021-11-22 15:37:54,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:54,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607117494] [2021-11-22 15:37:54,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:54,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:55,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:55,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:55,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607117494] [2021-11-22 15:37:55,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607117494] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:37:55,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:37:55,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:37:55,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721878457] [2021-11-22 15:37:55,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:37:55,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:37:55,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:55,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:37:55,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:37:55,006 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:55,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:55,038 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-11-22 15:37:55,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:37:55,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-22 15:37:55,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:55,040 INFO L225 Difference]: With dead ends: 15 [2021-11-22 15:37:55,040 INFO L226 Difference]: Without dead ends: 13 [2021-11-22 15:37:55,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:37:55,043 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:37:55,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:37:55,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-22 15:37:55,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-22 15:37:55,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:55,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-11-22 15:37:55,048 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2021-11-22 15:37:55,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:55,049 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-11-22 15:37:55,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:55,050 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-11-22 15:37:55,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 15:37:55,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:55,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:37:55,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:37:55,051 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-22 15:37:55,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:55,052 INFO L85 PathProgramCache]: Analyzing trace with hash 301623279, now seen corresponding path program 1 times [2021-11-22 15:37:55,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:55,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151276529] [2021-11-22 15:37:55,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:55,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:55,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:55,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151276529] [2021-11-22 15:37:55,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151276529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:37:55,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:37:55,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:37:55,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634140411] [2021-11-22 15:37:55,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:37:55,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:37:55,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:55,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:37:55,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:37:55,120 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:55,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:55,170 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-11-22 15:37:55,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:37:55,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-22 15:37:55,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:55,172 INFO L225 Difference]: With dead ends: 24 [2021-11-22 15:37:55,172 INFO L226 Difference]: Without dead ends: 23 [2021-11-22 15:37:55,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:37:55,174 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:37:55,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 29 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:37:55,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-22 15:37:55,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2021-11-22 15:37:55,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:55,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-11-22 15:37:55,181 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 8 [2021-11-22 15:37:55,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:55,181 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-11-22 15:37:55,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:55,181 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-11-22 15:37:55,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:37:55,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:55,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:37:55,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:37:55,183 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-22 15:37:55,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:55,184 INFO L85 PathProgramCache]: Analyzing trace with hash 760387117, now seen corresponding path program 1 times [2021-11-22 15:37:55,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:55,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713298394] [2021-11-22 15:37:55,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:55,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:55,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:55,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713298394] [2021-11-22 15:37:55,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713298394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:37:55,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:37:55,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:37:55,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39589001] [2021-11-22 15:37:55,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:37:55,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:37:55,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:55,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:37:55,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:37:55,260 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:55,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:55,293 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-11-22 15:37:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:37:55,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 15:37:55,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:55,295 INFO L225 Difference]: With dead ends: 21 [2021-11-22 15:37:55,296 INFO L226 Difference]: Without dead ends: 20 [2021-11-22 15:37:55,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:37:55,304 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:37:55,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 18 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:37:55,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-22 15:37:55,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-22 15:37:55,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:55,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-11-22 15:37:55,310 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 9 [2021-11-22 15:37:55,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:55,310 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-11-22 15:37:55,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:55,311 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-11-22 15:37:55,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-22 15:37:55,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:55,311 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-22 15:37:55,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:37:55,312 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-22 15:37:55,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:55,329 INFO L85 PathProgramCache]: Analyzing trace with hash -472760806, now seen corresponding path program 1 times [2021-11-22 15:37:55,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:55,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124800327] [2021-11-22 15:37:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:55,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:55,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:55,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124800327] [2021-11-22 15:37:55,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124800327] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:37:55,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418949320] [2021-11-22 15:37:55,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:55,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:37:55,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:37:55,446 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:37:55,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:37:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:55,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:37:55,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:37:55,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:55,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:37:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:55,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418949320] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:37:55,663 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:37:55,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-22 15:37:55,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147468172] [2021-11-22 15:37:55,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:37:55,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:37:55,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:55,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:37:55,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:37:55,666 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:55,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:55,737 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2021-11-22 15:37:55,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:37:55,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-22 15:37:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:55,739 INFO L225 Difference]: With dead ends: 49 [2021-11-22 15:37:55,739 INFO L226 Difference]: Without dead ends: 48 [2021-11-22 15:37:55,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:37:55,741 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 29 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:37:55,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 69 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:37:55,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-22 15:37:55,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2021-11-22 15:37:55,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 46 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:55,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2021-11-22 15:37:55,750 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 15 [2021-11-22 15:37:55,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:55,751 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2021-11-22 15:37:55,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:55,751 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2021-11-22 15:37:55,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-22 15:37:55,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:55,753 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2021-11-22 15:37:55,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:37:55,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:37:55,970 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-22 15:37:55,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:55,971 INFO L85 PathProgramCache]: Analyzing trace with hash 229942063, now seen corresponding path program 2 times [2021-11-22 15:37:55,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:55,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646374893] [2021-11-22 15:37:55,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:55,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:56,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:56,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646374893] [2021-11-22 15:37:56,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646374893] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:37:56,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283873670] [2021-11-22 15:37:56,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:37:56,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:37:56,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:37:56,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:37:56,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:37:56,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:37:56,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:37:56,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 15:37:56,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:37:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:56,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:37:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:56,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283873670] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:37:56,653 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:37:56,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-11-22 15:37:56,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507039422] [2021-11-22 15:37:56,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:37:56,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-22 15:37:56,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:56,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-22 15:37:56,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-22 15:37:56,661 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 22 states, 21 states have (on average 3.380952380952381) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:56,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:56,866 INFO L93 Difference]: Finished difference Result 103 states and 119 transitions. [2021-11-22 15:37:56,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-22 15:37:56,866 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.380952380952381) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-22 15:37:56,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:56,871 INFO L225 Difference]: With dead ends: 103 [2021-11-22 15:37:56,872 INFO L226 Difference]: Without dead ends: 102 [2021-11-22 15:37:56,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2021-11-22 15:37:56,878 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 135 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:37:56,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 101 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:37:56,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-22 15:37:56,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2021-11-22 15:37:56,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.12) internal successors, (112), 100 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:56,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2021-11-22 15:37:56,904 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 36 [2021-11-22 15:37:56,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:56,904 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2021-11-22 15:37:56,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.380952380952381) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:56,905 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2021-11-22 15:37:56,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-22 15:37:56,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:56,908 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 1, 1, 1] [2021-11-22 15:37:56,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:37:57,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-22 15:37:57,137 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-22 15:37:57,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:57,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1595795471, now seen corresponding path program 3 times [2021-11-22 15:37:57,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:57,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007078737] [2021-11-22 15:37:57,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:57,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:57,539 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:57,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:57,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007078737] [2021-11-22 15:37:57,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007078737] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:37:57,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23767800] [2021-11-22 15:37:57,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 15:37:57,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:37:57,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:37:57,544 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:37:57,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:37:57,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-22 15:37:57,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:37:57,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 15:37:57,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:37:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 113 proven. 1 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2021-11-22 15:37:58,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:37:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2021-11-22 15:37:58,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23767800] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-22 15:37:58,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:37:58,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [23, 6] total 31 [2021-11-22 15:37:58,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311259937] [2021-11-22 15:37:58,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:37:58,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:37:58,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:58,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:37:58,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2021-11-22 15:37:58,410 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:58,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:58,518 INFO L93 Difference]: Finished difference Result 260 states and 290 transitions. [2021-11-22 15:37:58,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:37:58,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-22 15:37:58,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:58,523 INFO L225 Difference]: With dead ends: 260 [2021-11-22 15:37:58,523 INFO L226 Difference]: Without dead ends: 174 [2021-11-22 15:37:58,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=180, Invalid=812, Unknown=0, NotChecked=0, Total=992 [2021-11-22 15:37:58,525 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:37:58,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 33 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:37:58,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-22 15:37:58,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 153. [2021-11-22 15:37:58,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.0855263157894737) internal successors, (165), 152 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 165 transitions. [2021-11-22 15:37:58,551 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 165 transitions. Word has length 78 [2021-11-22 15:37:58,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:58,552 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 165 transitions. [2021-11-22 15:37:58,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:37:58,552 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 165 transitions. [2021-11-22 15:37:58,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-22 15:37:58,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:58,559 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 6, 6, 6, 5, 5, 5, 1, 1, 1] [2021-11-22 15:37:58,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:37:58,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-22 15:37:58,771 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-22 15:37:58,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:58,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1751107155, now seen corresponding path program 1 times [2021-11-22 15:37:58,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:58,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658864317] [2021-11-22 15:37:58,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:58,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:59,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:59,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658864317] [2021-11-22 15:37:59,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658864317] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:37:59,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121054559] [2021-11-22 15:37:59,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:59,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:37:59,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:37:59,112 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:37:59,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 15:37:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:59,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-22 15:37:59,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:37:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:59,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:38:00,017 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:38:00,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121054559] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:38:00,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:38:00,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2021-11-22 15:38:00,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241045344] [2021-11-22 15:38:00,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:38:00,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-22 15:38:00,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:38:00,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-22 15:38:00,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-11-22 15:38:00,022 INFO L87 Difference]: Start difference. First operand 153 states and 165 transitions. Second operand has 46 states, 45 states have (on average 3.4444444444444446) internal successors, (155), 46 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:38:00,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:38:00,512 INFO L93 Difference]: Finished difference Result 324 states and 371 transitions. [2021-11-22 15:38:00,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-22 15:38:00,513 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 3.4444444444444446) internal successors, (155), 46 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-22 15:38:00,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:38:00,515 INFO L225 Difference]: With dead ends: 324 [2021-11-22 15:38:00,515 INFO L226 Difference]: Without dead ends: 323 [2021-11-22 15:38:00,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1332, Invalid=3224, Unknown=0, NotChecked=0, Total=4556 [2021-11-22 15:38:00,519 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 402 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:38:00,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 211 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:38:00,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-22 15:38:00,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 321. [2021-11-22 15:38:00,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.078125) internal successors, (345), 320 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:38:00,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 345 transitions. [2021-11-22 15:38:00,541 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 345 transitions. Word has length 78 [2021-11-22 15:38:00,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:38:00,542 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 345 transitions. [2021-11-22 15:38:00,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 3.4444444444444446) internal successors, (155), 46 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:38:00,543 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 345 transitions. [2021-11-22 15:38:00,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-22 15:38:00,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:38:00,547 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 12, 12, 12, 11, 11, 11, 1, 1, 1] [2021-11-22 15:38:00,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:38:00,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-22 15:38:00,773 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-22 15:38:00,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:38:00,773 INFO L85 PathProgramCache]: Analyzing trace with hash 515046929, now seen corresponding path program 2 times [2021-11-22 15:38:00,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:38:00,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134249149] [2021-11-22 15:38:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:38:00,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:38:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:38:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:38:01,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:38:01,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134249149] [2021-11-22 15:38:01,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134249149] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:38:01,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98771389] [2021-11-22 15:38:01,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:38:01,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:38:01,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:38:01,766 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:38:01,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 15:38:01,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:38:01,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:38:01,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-22 15:38:01,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:38:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:38:02,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:38:04,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:38:04,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98771389] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:38:04,368 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:38:04,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2021-11-22 15:38:04,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024187192] [2021-11-22 15:38:04,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:38:04,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-22 15:38:04,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:38:04,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-22 15:38:04,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-11-22 15:38:04,379 INFO L87 Difference]: Start difference. First operand 321 states and 345 transitions. Second operand has 94 states, 93 states have (on average 3.4731182795698925) internal successors, (323), 94 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:38:06,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:38:06,050 INFO L93 Difference]: Finished difference Result 660 states and 755 transitions. [2021-11-22 15:38:06,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-22 15:38:06,051 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 3.4731182795698925) internal successors, (323), 94 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2021-11-22 15:38:06,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:38:06,055 INFO L225 Difference]: With dead ends: 660 [2021-11-22 15:38:06,055 INFO L226 Difference]: Without dead ends: 659 [2021-11-22 15:38:06,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4006 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5544, Invalid=13916, Unknown=0, NotChecked=0, Total=19460 [2021-11-22 15:38:06,066 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 1161 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:38:06,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1161 Valid, 363 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:38:06,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-11-22 15:38:06,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 657. [2021-11-22 15:38:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 1.0746951219512195) internal successors, (705), 656 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:38:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 705 transitions. [2021-11-22 15:38:06,094 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 705 transitions. Word has length 162 [2021-11-22 15:38:06,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:38:06,095 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 705 transitions. [2021-11-22 15:38:06,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 3.4731182795698925) internal successors, (323), 94 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:38:06,096 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 705 transitions. [2021-11-22 15:38:06,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-11-22 15:38:06,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:38:06,103 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 24, 24, 24, 23, 23, 23, 1, 1, 1] [2021-11-22 15:38:06,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:38:06,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:38:06,325 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-22 15:38:06,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:38:06,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1058789593, now seen corresponding path program 3 times [2021-11-22 15:38:06,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:38:06,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395616971] [2021-11-22 15:38:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:38:06,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:38:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:38:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6417 backedges. 0 proven. 6417 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:38:09,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:38:09,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395616971] [2021-11-22 15:38:09,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395616971] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:38:09,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139659036] [2021-11-22 15:38:09,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 15:38:09,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:38:09,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:38:09,297 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:38:09,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 15:38:09,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2021-11-22 15:38:09,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:38:09,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-22 15:38:09,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:38:10,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6417 backedges. 0 proven. 6417 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:38:10,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:38:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6417 backedges. 0 proven. 6417 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:38:16,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139659036] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:38:16,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:38:16,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 189 [2021-11-22 15:38:16,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43463885] [2021-11-22 15:38:16,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:38:16,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-11-22 15:38:16,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:38:16,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-11-22 15:38:16,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2021-11-22 15:38:16,961 INFO L87 Difference]: Start difference. First operand 657 states and 705 transitions. Second operand has 190 states, 189 states have (on average 3.486772486772487) internal successors, (659), 190 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:38:23,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:38:23,368 INFO L93 Difference]: Finished difference Result 1332 states and 1523 transitions. [2021-11-22 15:38:23,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2021-11-22 15:38:23,385 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 3.486772486772487) internal successors, (659), 190 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 330 [2021-11-22 15:38:23,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:38:23,394 INFO L225 Difference]: With dead ends: 1332 [2021-11-22 15:38:23,394 INFO L226 Difference]: Without dead ends: 1331 [2021-11-22 15:38:23,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 847 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17206 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=22608, Invalid=57764, Unknown=0, NotChecked=0, Total=80372 [2021-11-22 15:38:23,403 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 3109 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3109 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:38:23,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3109 Valid, 731 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 15:38:23,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2021-11-22 15:38:23,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1329. [2021-11-22 15:38:23,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1329 states, 1328 states have (on average 1.0730421686746987) internal successors, (1425), 1328 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:38:23,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1425 transitions. [2021-11-22 15:38:23,445 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1425 transitions. Word has length 330 [2021-11-22 15:38:23,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:38:23,446 INFO L470 AbstractCegarLoop]: Abstraction has 1329 states and 1425 transitions. [2021-11-22 15:38:23,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 3.486772486772487) internal successors, (659), 190 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:38:23,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1425 transitions. [2021-11-22 15:38:23,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2021-11-22 15:38:23,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:38:23,465 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 94, 94, 48, 48, 48, 47, 47, 47, 1, 1, 1] [2021-11-22 15:38:23,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:38:23,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:38:23,681 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-22 15:38:23,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:38:23,681 INFO L85 PathProgramCache]: Analyzing trace with hash -589900183, now seen corresponding path program 4 times [2021-11-22 15:38:23,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:38:23,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393738199] [2021-11-22 15:38:23,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:38:23,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:38:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:38:28,934 INFO L134 CoverageAnalysis]: Checked inductivity of 26649 backedges. 22640 proven. 524 refuted. 0 times theorem prover too weak. 3485 trivial. 0 not checked. [2021-11-22 15:38:28,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:38:28,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393738199] [2021-11-22 15:38:28,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393738199] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:38:28,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581284795] [2021-11-22 15:38:28,935 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 15:38:28,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:38:28,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:38:28,936 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:38:28,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7131de4b-929a-4220-9bd1-33f4eec8efd2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 15:38:29,248 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 15:38:29,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:38:29,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 191 conjunts are in the unsatisfiable core [2021-11-22 15:38:29,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:38:45,490 INFO L134 CoverageAnalysis]: Checked inductivity of 26649 backedges. 0 proven. 26649 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:38:45,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:39:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 26649 backedges. 0 proven. 26649 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:39:14,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581284795] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:39:14,908 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:39:14,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 191, 191] total 474 [2021-11-22 15:39:14,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383277241] [2021-11-22 15:39:14,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:39:14,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 474 states [2021-11-22 15:39:14,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:39:14,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 474 interpolants. [2021-11-22 15:39:14,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39994, Invalid=184208, Unknown=0, NotChecked=0, Total=224202 [2021-11-22 15:39:14,939 INFO L87 Difference]: Start difference. First operand 1329 states and 1425 transitions. Second operand has 474 states, 474 states have (on average 3.721518987341772) internal successors, (1764), 474 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)