./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/MultCommutative-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/MultCommutative-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R --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 2f58e1f128e4dbefcdb138e1f7ef5e4260326da20e0bd376d80fe12a55b55920 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 16:48:37,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:48:37,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:48:37,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:48:37,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:48:37,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:48:37,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:48:37,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:48:37,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:48:37,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:48:37,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:48:37,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:48:37,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:48:37,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:48:37,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:48:37,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:48:37,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:48:37,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:48:37,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:48:37,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:48:37,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:48:37,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:48:37,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:48:37,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:48:37,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:48:37,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:48:37,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:48:37,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:48:37,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:48:37,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:48:37,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:48:37,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:48:37,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:48:37,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:48:37,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:48:37,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:48:37,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:48:37,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:48:37,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:48:37,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:48:37,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:48:37,605 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-25 16:48:37,653 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:48:37,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:48:37,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:48:37,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:48:37,656 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:48:37,656 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:48:37,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:48:37,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:48:37,658 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:48:37,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:48:37,659 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:48:37,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:48:37,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:48:37,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:48:37,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:48:37,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:48:37,661 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 16:48:37,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:48:37,662 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:48:37,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:48:37,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:48:37,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:48:37,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:48:37,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:48:37,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:48:37,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:48:37,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:48:37,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:48:37,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:48:37,666 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:48:37,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:48:37,667 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:48:37,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:48:37,668 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f58e1f128e4dbefcdb138e1f7ef5e4260326da20e0bd376d80fe12a55b55920 [2022-11-25 16:48:38,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:48:38,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:48:38,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:48:38,045 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:48:38,045 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:48:38,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2022-11-25 16:48:40,989 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:48:41,253 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:48:41,253 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2022-11-25 16:48:41,260 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/data/c16ce39eb/9938a5e679ce447ca73d7f1584d48318/FLAGdf4e7da28 [2022-11-25 16:48:41,277 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/data/c16ce39eb/9938a5e679ce447ca73d7f1584d48318 [2022-11-25 16:48:41,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:48:41,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:48:41,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:48:41,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:48:41,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:48:41,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:48:41" (1/1) ... [2022-11-25 16:48:41,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d971a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:48:41, skipping insertion in model container [2022-11-25 16:48:41,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:48:41" (1/1) ... [2022-11-25 16:48:41,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:48:41,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:48:41,497 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/sv-benchmarks/c/termination-numeric/MultCommutative-1.c[1008,1021] [2022-11-25 16:48:41,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:48:41,510 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:48:41,534 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/sv-benchmarks/c/termination-numeric/MultCommutative-1.c[1008,1021] [2022-11-25 16:48:41,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:48:41,548 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:48:41,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:48:41 WrapperNode [2022-11-25 16:48:41,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:48:41,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:48:41,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:48:41,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:48:41,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:48:41" (1/1) ... [2022-11-25 16:48:41,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:48:41" (1/1) ... [2022-11-25 16:48:41,580 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-11-25 16:48:41,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:48:41,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:48:41,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:48:41,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:48:41,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:48:41" (1/1) ... [2022-11-25 16:48:41,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:48:41" (1/1) ... [2022-11-25 16:48:41,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:48:41" (1/1) ... [2022-11-25 16:48:41,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:48:41" (1/1) ... [2022-11-25 16:48:41,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:48:41" (1/1) ... [2022-11-25 16:48:41,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:48:41" (1/1) ... [2022-11-25 16:48:41,599 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:48:41" (1/1) ... [2022-11-25 16:48:41,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:48:41" (1/1) ... [2022-11-25 16:48:41,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:48:41,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:48:41,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:48:41,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:48:41,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:48:41" (1/1) ... [2022-11-25 16:48:41,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:48:41,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:48:41,639 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:48:41,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:48:41,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:48:41,683 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2022-11-25 16:48:41,684 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2022-11-25 16:48:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:48:41,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:48:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:48:41,756 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:48:41,759 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:48:41,910 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:48:41,917 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:48:41,918 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 16:48:41,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:48:41 BoogieIcfgContainer [2022-11-25 16:48:41,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:48:41,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:48:41,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:48:41,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:48:41,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:48:41" (1/3) ... [2022-11-25 16:48:41,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@763863d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:48:41, skipping insertion in model container [2022-11-25 16:48:41,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:48:41" (2/3) ... [2022-11-25 16:48:41,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@763863d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:48:41, skipping insertion in model container [2022-11-25 16:48:41,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:48:41" (3/3) ... [2022-11-25 16:48:41,931 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-1.c [2022-11-25 16:48:41,950 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:48:41,950 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-25 16:48:42,006 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:48:42,013 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4510785b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:48:42,013 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-25 16:48:42,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 16:48:42,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 16:48:42,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:42,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:48:42,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 16:48:42,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:42,034 INFO L85 PathProgramCache]: Analyzing trace with hash 617794544, now seen corresponding path program 1 times [2022-11-25 16:48:42,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:42,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762947351] [2022-11-25 16:48:42,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:42,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:42,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:42,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762947351] [2022-11-25 16:48:42,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762947351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:48:42,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:48:42,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:48:42,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410553286] [2022-11-25 16:48:42,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:48:42,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:48:42,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:42,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:48:42,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:48:42,377 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:48:42,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:42,486 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2022-11-25 16:48:42,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:48:42,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 16:48:42,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:42,501 INFO L225 Difference]: With dead ends: 39 [2022-11-25 16:48:42,501 INFO L226 Difference]: Without dead ends: 29 [2022-11-25 16:48:42,510 INFO L412 NwaCegarLoop]: 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 [2022-11-25 16:48:42,514 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:42,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 64 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:48:42,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-25 16:48:42,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-11-25 16:48:42,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.411764705882353) internal successors, (24), 22 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 16:48:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-11-25 16:48:42,564 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 8 [2022-11-25 16:48:42,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:42,565 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-11-25 16:48:42,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:48:42,565 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-11-25 16:48:42,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 16:48:42,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:42,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:48:42,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:48:42,567 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 16:48:42,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:42,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1971761717, now seen corresponding path program 1 times [2022-11-25 16:48:42,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:42,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587500249] [2022-11-25 16:48:42,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:42,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:42,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:42,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587500249] [2022-11-25 16:48:42,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587500249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:48:42,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:48:42,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:48:42,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606702754] [2022-11-25 16:48:42,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:48:42,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:48:42,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:42,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:48:42,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:48:42,665 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:48:42,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:42,784 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2022-11-25 16:48:42,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:48:42,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 16:48:42,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:42,786 INFO L225 Difference]: With dead ends: 64 [2022-11-25 16:48:42,786 INFO L226 Difference]: Without dead ends: 42 [2022-11-25 16:48:42,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:48:42,789 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 37 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:42,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 57 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:48:42,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-25 16:48:42,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2022-11-25 16:48:42,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 30 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 16:48:42,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2022-11-25 16:48:42,805 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 9 [2022-11-25 16:48:42,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:42,806 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-11-25 16:48:42,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:48:42,807 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2022-11-25 16:48:42,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 16:48:42,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:42,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:48:42,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:48:42,808 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 16:48:42,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:42,809 INFO L85 PathProgramCache]: Analyzing trace with hash 995288596, now seen corresponding path program 1 times [2022-11-25 16:48:42,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:42,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256695912] [2022-11-25 16:48:42,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:42,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:42,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:42,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:42,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256695912] [2022-11-25 16:48:42,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256695912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:48:42,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:48:42,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:48:42,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520534402] [2022-11-25 16:48:42,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:48:42,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:48:42,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:42,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:48:42,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:48:42,982 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:48:43,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:43,120 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-11-25 16:48:43,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:48:43,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 16:48:43,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:43,122 INFO L225 Difference]: With dead ends: 58 [2022-11-25 16:48:43,123 INFO L226 Difference]: Without dead ends: 57 [2022-11-25 16:48:43,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:48:43,125 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 36 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:43,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 53 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:48:43,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-25 16:48:43,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2022-11-25 16:48:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.368421052631579) internal successors, (52), 42 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 16:48:43,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2022-11-25 16:48:43,138 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 10 [2022-11-25 16:48:43,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:43,138 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2022-11-25 16:48:43,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:48:43,139 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2022-11-25 16:48:43,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 16:48:43,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:43,140 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:48:43,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 16:48:43,140 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 16:48:43,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:43,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1452689498, now seen corresponding path program 1 times [2022-11-25 16:48:43,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:43,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386810091] [2022-11-25 16:48:43,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:43,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:43,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:43,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386810091] [2022-11-25 16:48:43,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386810091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:48:43,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:48:43,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:48:43,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515764572] [2022-11-25 16:48:43,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:48:43,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:48:43,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:43,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:48:43,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:48:43,241 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:48:43,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:43,392 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2022-11-25 16:48:43,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:48:43,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-25 16:48:43,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:43,399 INFO L225 Difference]: With dead ends: 77 [2022-11-25 16:48:43,400 INFO L226 Difference]: Without dead ends: 76 [2022-11-25 16:48:43,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:48:43,402 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 37 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:43,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 57 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:48:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-25 16:48:43,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2022-11-25 16:48:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 54 states have internal predecessors, (68), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-25 16:48:43,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2022-11-25 16:48:43,425 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 15 [2022-11-25 16:48:43,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:43,425 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2022-11-25 16:48:43,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:48:43,426 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2022-11-25 16:48:43,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-25 16:48:43,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:43,427 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:48:43,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:48:43,427 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 16:48:43,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:43,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1005455158, now seen corresponding path program 1 times [2022-11-25 16:48:43,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:43,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676625679] [2022-11-25 16:48:43,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:43,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:43,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:48:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:43,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:43,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:43,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676625679] [2022-11-25 16:48:43,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676625679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:48:43,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:48:43,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:48:43,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038691726] [2022-11-25 16:48:43,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:48:43,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:48:43,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:43,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:48:43,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:48:43,569 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 16:48:43,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:43,685 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2022-11-25 16:48:43,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:48:43,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-25 16:48:43,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:43,694 INFO L225 Difference]: With dead ends: 121 [2022-11-25 16:48:43,694 INFO L226 Difference]: Without dead ends: 85 [2022-11-25 16:48:43,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:48:43,701 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 25 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:43,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 77 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:48:43,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-25 16:48:43,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2022-11-25 16:48:43,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 61 states have internal predecessors, (78), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-25 16:48:43,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2022-11-25 16:48:43,722 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 16 [2022-11-25 16:48:43,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:43,722 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2022-11-25 16:48:43,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 16:48:43,728 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2022-11-25 16:48:43,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 16:48:43,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:43,730 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:48:43,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 16:48:43,735 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 16:48:43,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:43,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1104121313, now seen corresponding path program 1 times [2022-11-25 16:48:43,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:43,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052333370] [2022-11-25 16:48:43,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:43,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:43,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:48:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:43,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:43,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:43,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052333370] [2022-11-25 16:48:43,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052333370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:48:43,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:48:43,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:48:43,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391133343] [2022-11-25 16:48:43,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:48:43,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:48:43,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:43,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:48:43,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:48:43,853 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 16:48:43,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:43,958 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2022-11-25 16:48:43,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:48:43,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-25 16:48:43,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:43,963 INFO L225 Difference]: With dead ends: 102 [2022-11-25 16:48:43,964 INFO L226 Difference]: Without dead ends: 101 [2022-11-25 16:48:43,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:48:43,972 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 27 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:43,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 87 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:48:43,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-25 16:48:43,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2022-11-25 16:48:43,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 73 states have internal predecessors, (93), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-25 16:48:44,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2022-11-25 16:48:44,007 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 17 [2022-11-25 16:48:44,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:44,007 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2022-11-25 16:48:44,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 16:48:44,008 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2022-11-25 16:48:44,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-25 16:48:44,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:44,010 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:48:44,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 16:48:44,011 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 16:48:44,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:44,013 INFO L85 PathProgramCache]: Analyzing trace with hash -773947711, now seen corresponding path program 1 times [2022-11-25 16:48:44,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:44,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300633574] [2022-11-25 16:48:44,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:44,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:44,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 16:48:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:44,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:44,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:44,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300633574] [2022-11-25 16:48:44,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300633574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:48:44,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700177743] [2022-11-25 16:48:44,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:44,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:48:44,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:48:44,208 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:48:44,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:48:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:44,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 16:48:44,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:48:44,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:44,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:48:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:44,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700177743] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:48:44,484 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:48:44,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2022-11-25 16:48:44,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45568056] [2022-11-25 16:48:44,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:48:44,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 16:48:44,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:44,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 16:48:44,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:48:44,487 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 16:48:44,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:44,666 INFO L93 Difference]: Finished difference Result 152 states and 201 transitions. [2022-11-25 16:48:44,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 16:48:44,668 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-11-25 16:48:44,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:44,672 INFO L225 Difference]: With dead ends: 152 [2022-11-25 16:48:44,672 INFO L226 Difference]: Without dead ends: 151 [2022-11-25 16:48:44,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:48:44,676 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 41 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:44,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 134 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:48:44,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-25 16:48:44,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 121. [2022-11-25 16:48:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 97 states have internal predecessors, (124), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-25 16:48:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 155 transitions. [2022-11-25 16:48:44,718 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 155 transitions. Word has length 18 [2022-11-25 16:48:44,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:44,719 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 155 transitions. [2022-11-25 16:48:44,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 16:48:44,719 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 155 transitions. [2022-11-25 16:48:44,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-25 16:48:44,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:44,723 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:48:44,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 16:48:44,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 16:48:44,927 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 16:48:44,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:44,928 INFO L85 PathProgramCache]: Analyzing trace with hash 922018386, now seen corresponding path program 1 times [2022-11-25 16:48:44,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:44,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139977826] [2022-11-25 16:48:44,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:44,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:45,014 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:48:45,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:45,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139977826] [2022-11-25 16:48:45,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139977826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:48:45,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:48:45,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:48:45,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248964126] [2022-11-25 16:48:45,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:48:45,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:48:45,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:45,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:48:45,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:48:45,017 INFO L87 Difference]: Start difference. First operand 121 states and 155 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:48:45,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:45,077 INFO L93 Difference]: Finished difference Result 163 states and 206 transitions. [2022-11-25 16:48:45,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:48:45,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-25 16:48:45,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:45,079 INFO L225 Difference]: With dead ends: 163 [2022-11-25 16:48:45,079 INFO L226 Difference]: Without dead ends: 59 [2022-11-25 16:48:45,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:48:45,081 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:45,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 53 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:48:45,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-25 16:48:45,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2022-11-25 16:48:45,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.2) internal successors, (48), 41 states have internal predecessors, (48), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 16:48:45,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2022-11-25 16:48:45,089 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 20 [2022-11-25 16:48:45,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:45,089 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2022-11-25 16:48:45,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:48:45,090 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2022-11-25 16:48:45,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 16:48:45,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:45,091 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:48:45,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 16:48:45,091 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 16:48:45,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:45,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1777424789, now seen corresponding path program 1 times [2022-11-25 16:48:45,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:45,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850775321] [2022-11-25 16:48:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:45,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:45,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 16:48:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:45,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:45,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:45,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850775321] [2022-11-25 16:48:45,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850775321] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:48:45,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039570117] [2022-11-25 16:48:45,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:45,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:48:45,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:48:45,259 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:48:45,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 16:48:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:45,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 16:48:45,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:48:45,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:45,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:48:45,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:45,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039570117] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:48:45,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:48:45,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-11-25 16:48:45,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392240212] [2022-11-25 16:48:45,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:48:45,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 16:48:45,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:45,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 16:48:45,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-25 16:48:45,490 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 16:48:45,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:45,625 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2022-11-25 16:48:45,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:48:45,626 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2022-11-25 16:48:45,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:45,627 INFO L225 Difference]: With dead ends: 65 [2022-11-25 16:48:45,629 INFO L226 Difference]: Without dead ends: 64 [2022-11-25 16:48:45,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:48:45,633 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:45,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 86 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:48:45,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-25 16:48:45,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2022-11-25 16:48:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-25 16:48:45,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2022-11-25 16:48:45,647 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 19 [2022-11-25 16:48:45,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:45,648 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2022-11-25 16:48:45,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 16:48:45,648 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2022-11-25 16:48:45,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-25 16:48:45,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:45,651 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:48:45,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 16:48:45,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:48:45,856 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 16:48:45,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:45,857 INFO L85 PathProgramCache]: Analyzing trace with hash -211759156, now seen corresponding path program 1 times [2022-11-25 16:48:45,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:45,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088262202] [2022-11-25 16:48:45,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:45,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:45,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:48:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:45,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 16:48:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 16:48:45,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:45,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088262202] [2022-11-25 16:48:45,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088262202] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:48:45,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13556042] [2022-11-25 16:48:45,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:45,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:48:45,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:48:45,999 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:48:46,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 16:48:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:46,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 16:48:46,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:48:46,142 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 16:48:46,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:48:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 16:48:46,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13556042] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:48:46,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:48:46,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2022-11-25 16:48:46,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215144858] [2022-11-25 16:48:46,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:48:46,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 16:48:46,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:46,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 16:48:46,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:48:46,226 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 16:48:46,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:46,360 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2022-11-25 16:48:46,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 16:48:46,361 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-11-25 16:48:46,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:46,362 INFO L225 Difference]: With dead ends: 71 [2022-11-25 16:48:46,362 INFO L226 Difference]: Without dead ends: 70 [2022-11-25 16:48:46,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:48:46,364 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 26 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:46,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 146 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:48:46,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-25 16:48:46,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2022-11-25 16:48:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.127659574468085) internal successors, (53), 46 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-25 16:48:46,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2022-11-25 16:48:46,372 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 25 [2022-11-25 16:48:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:46,372 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2022-11-25 16:48:46,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 16:48:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2022-11-25 16:48:46,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-25 16:48:46,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:46,374 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:48:46,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 16:48:46,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:48:46,581 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 16:48:46,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:46,581 INFO L85 PathProgramCache]: Analyzing trace with hash 2025400810, now seen corresponding path program 1 times [2022-11-25 16:48:46,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:46,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437938071] [2022-11-25 16:48:46,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:46,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:46,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:48:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:46,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 16:48:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:48:46,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:46,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437938071] [2022-11-25 16:48:46,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437938071] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:48:46,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892583003] [2022-11-25 16:48:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:46,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:48:46,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:48:46,788 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:48:46,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 16:48:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:46,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 16:48:46,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:48:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:48:46,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:48:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:48:47,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892583003] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:48:47,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:48:47,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2022-11-25 16:48:47,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440069237] [2022-11-25 16:48:47,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:48:47,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 16:48:47,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:47,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 16:48:47,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:48:47,047 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 16:48:47,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:47,255 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2022-11-25 16:48:47,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 16:48:47,255 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-11-25 16:48:47,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:47,257 INFO L225 Difference]: With dead ends: 93 [2022-11-25 16:48:47,257 INFO L226 Difference]: Without dead ends: 60 [2022-11-25 16:48:47,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-11-25 16:48:47,260 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 47 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:47,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 75 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:48:47,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-25 16:48:47,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2022-11-25 16:48:47,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 46 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-25 16:48:47,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2022-11-25 16:48:47,283 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 26 [2022-11-25 16:48:47,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:47,284 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2022-11-25 16:48:47,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 16:48:47,284 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2022-11-25 16:48:47,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 16:48:47,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:47,287 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:48:47,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 16:48:47,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 16:48:47,493 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-25 16:48:47,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:47,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1713074993, now seen corresponding path program 1 times [2022-11-25 16:48:47,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:47,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769413478] [2022-11-25 16:48:47,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:47,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:48:47,516 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:48:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:48:47,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:48:47,556 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 16:48:47,557 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-25 16:48:47,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-25 16:48:47,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-25 16:48:47,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-25 16:48:47,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-25 16:48:47,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-25 16:48:47,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 16:48:47,565 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:48:47,569 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 16:48:47,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 04:48:47 BoogieIcfgContainer [2022-11-25 16:48:47,607 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 16:48:47,607 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 16:48:47,608 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 16:48:47,608 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 16:48:47,608 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:48:41" (3/4) ... [2022-11-25 16:48:47,610 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 16:48:47,665 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 16:48:47,665 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 16:48:47,666 INFO L158 Benchmark]: Toolchain (without parser) took 6383.82ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 98.0MB in the beginning and 57.0MB in the end (delta: 41.0MB). Peak memory consumption was 71.1MB. Max. memory is 16.1GB. [2022-11-25 16:48:47,666 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 130.0MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:48:47,666 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.79ms. Allocated memory is still 130.0MB. Free memory was 98.0MB in the beginning and 87.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 16:48:47,667 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.01ms. Allocated memory is still 130.0MB. Free memory was 87.9MB in the beginning and 86.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 16:48:47,667 INFO L158 Benchmark]: Boogie Preprocessor took 20.71ms. Allocated memory is still 130.0MB. Free memory was 86.1MB in the beginning and 85.4MB in the end (delta: 786.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:48:47,667 INFO L158 Benchmark]: RCFGBuilder took 317.99ms. Allocated memory is still 130.0MB. Free memory was 85.4MB in the beginning and 74.7MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 16:48:47,668 INFO L158 Benchmark]: TraceAbstraction took 5684.19ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 73.9MB in the beginning and 59.1MB in the end (delta: 14.8MB). Peak memory consumption was 43.9MB. Max. memory is 16.1GB. [2022-11-25 16:48:47,668 INFO L158 Benchmark]: Witness Printer took 57.61ms. Allocated memory is still 157.3MB. Free memory was 59.1MB in the beginning and 57.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 16:48:47,670 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 130.0MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.79ms. Allocated memory is still 130.0MB. Free memory was 98.0MB in the beginning and 87.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.01ms. Allocated memory is still 130.0MB. Free memory was 87.9MB in the beginning and 86.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.71ms. Allocated memory is still 130.0MB. Free memory was 86.1MB in the beginning and 85.4MB in the end (delta: 786.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 317.99ms. Allocated memory is still 130.0MB. Free memory was 85.4MB in the beginning and 74.7MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5684.19ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 73.9MB in the beginning and 59.1MB in the end (delta: 14.8MB). Peak memory consumption was 43.9MB. Max. memory is 16.1GB. * Witness Printer took 57.61ms. Allocated memory is still 157.3MB. Free memory was 59.1MB in the beginning and 57.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L28] int m = __VERIFIER_nondet_int(); [L29] COND FALSE !(m < 0) [L32] int n = __VERIFIER_nondet_int(); [L33] COND FALSE !(n < 0) VAL [m=1073741824, n=2] [L36] CALL mult(m, n) VAL [\old(m)=2, \old(n)=1073741824] [L18] COND FALSE !(m < 0) VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L21] COND FALSE !(m == 0) VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L24] EXPR m - 1 VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L24] CALL, EXPR mult(n, m - 1) VAL [\old(m)=1, \old(n)=1073741824] [L18] COND FALSE !(m < 0) VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L21] COND FALSE !(m == 0) VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L24] EXPR m - 1 VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L24] CALL, EXPR mult(n, m - 1) VAL [\old(m)=0, \old(n)=1073741824] [L18] COND FALSE !(m < 0) VAL [\old(m)=0, \old(n)=1073741824, m=0, n=1073741824] [L21] COND TRUE m == 0 [L22] return 0; VAL [\old(m)=0, \old(n)=1073741824, \result=0, m=0, n=1073741824] [L24] RET, EXPR mult(n, m - 1) VAL [\old(m)=1, \old(n)=1073741824, m=1, mult(n, m - 1)=0, n=1073741824] [L24] EXPR n + mult(n, m - 1) [L24] return n + mult(n, m - 1); [L24] RET, EXPR mult(n, m - 1) VAL [\old(m)=2, \old(n)=1073741824, m=2, mult(n, m - 1)=1073741824, n=1073741824] [L24] n + mult(n, m - 1) VAL [\old(m)=2, \old(n)=1073741824, m=2, mult(n, m - 1)=1073741824, n=1073741824] - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 350 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 330 mSDsluCounter, 889 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 615 mSDsCounter, 81 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 692 IncrementalHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 81 mSolverCounterUnsat, 274 mSDtfsCounter, 692 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 176 SyntacticMatches, 17 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=7, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 97 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 301 NumberOfCodeBlocks, 301 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 340 ConstructedInterpolants, 0 QuantifiedInterpolants, 889 SizeOfPredicates, 8 NumberOfNonLiveVariables, 318 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 19 InterpolantComputations, 7 PerfectInterpolantSequences, 45/99 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-25 16:48:47,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1150d078-1254-4b18-8503-efe192bb2492/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)