./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-examples/standard_copy1_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_copy1_ground-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 32bit --witnessprinter.graph.data.programhash 1970a9a8aaeda89e1214c4bedc05560d9ae947bac2f3f8ce77018b7acf727f81 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:05:19,325 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:05:19,398 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 12:05:19,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:05:19,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:05:19,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:05:19,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:05:19,433 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:05:19,434 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:05:19,435 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:05:19,436 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:05:19,436 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:05:19,437 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:05:19,438 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:05:19,438 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:05:19,439 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:05:19,440 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:05:19,440 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:05:19,441 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:05:19,441 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:05:19,442 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:05:19,443 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:05:19,443 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:05:19,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:05:19,444 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 12:05:19,445 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:05:19,446 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:05:19,446 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:05:19,447 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:05:19,448 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:05:19,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:05:19,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:05:19,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:05:19,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:05:19,451 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:05:19,452 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:05:19,453 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:05:19,453 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:05:19,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:05:19,454 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:05:19,455 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:05:19,455 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:05:19,456 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:05:19,456 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:05:19,456 INFO L153 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_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1970a9a8aaeda89e1214c4bedc05560d9ae947bac2f3f8ce77018b7acf727f81 [2023-11-26 12:05:19,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:05:19,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:05:19,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:05:19,851 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:05:19,852 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:05:19,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/array-examples/standard_copy1_ground-2.i [2023-11-26 12:05:22,992 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:05:23,185 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:05:23,186 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/sv-benchmarks/c/array-examples/standard_copy1_ground-2.i [2023-11-26 12:05:23,194 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/data/962cfafc5/37653f05113c4102a6ac7254f1007732/FLAGe13eb58f2 [2023-11-26 12:05:23,209 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/data/962cfafc5/37653f05113c4102a6ac7254f1007732 [2023-11-26 12:05:23,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:05:23,214 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:05:23,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:05:23,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:05:23,221 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:05:23,222 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:23" (1/1) ... [2023-11-26 12:05:23,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c4f1f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:23, skipping insertion in model container [2023-11-26 12:05:23,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:23" (1/1) ... [2023-11-26 12:05:23,246 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:05:23,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:05:23,479 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:05:23,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:05:23,513 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:05:23,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:23 WrapperNode [2023-11-26 12:05:23,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:05:23,516 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:05:23,516 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:05:23,516 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:05:23,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:23" (1/1) ... [2023-11-26 12:05:23,532 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:23" (1/1) ... [2023-11-26 12:05:23,555 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2023-11-26 12:05:23,555 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:05:23,556 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:05:23,556 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:05:23,557 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:05:23,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:23" (1/1) ... [2023-11-26 12:05:23,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:23" (1/1) ... [2023-11-26 12:05:23,570 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:23" (1/1) ... [2023-11-26 12:05:23,585 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 4, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 2, 1]. [2023-11-26 12:05:23,585 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:23" (1/1) ... [2023-11-26 12:05:23,586 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:23" (1/1) ... [2023-11-26 12:05:23,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:23" (1/1) ... [2023-11-26 12:05:23,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:23" (1/1) ... [2023-11-26 12:05:23,597 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:23" (1/1) ... [2023-11-26 12:05:23,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:23" (1/1) ... [2023-11-26 12:05:23,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:05:23,616 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:05:23,616 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:05:23,616 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:05:23,617 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:23" (1/1) ... [2023-11-26 12:05:23,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:05:23,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:23,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:23,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:05:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:05:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:05:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:05:23,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:05:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:05:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:05:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:05:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:05:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:05:23,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:05:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 12:05:23,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 12:05:23,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 12:05:23,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:05:23,784 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:05:23,787 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:05:24,027 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:05:24,095 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:05:24,095 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-26 12:05:24,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:24 BoogieIcfgContainer [2023-11-26 12:05:24,096 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:05:24,099 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:05:24,099 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:05:24,103 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:05:24,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:05:23" (1/3) ... [2023-11-26 12:05:24,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735f66b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:05:24, skipping insertion in model container [2023-11-26 12:05:24,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:23" (2/3) ... [2023-11-26 12:05:24,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735f66b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:05:24, skipping insertion in model container [2023-11-26 12:05:24,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:24" (3/3) ... [2023-11-26 12:05:24,113 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy1_ground-2.i [2023-11-26 12:05:24,137 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:05:24,138 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-26 12:05:24,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:05:24,211 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=LoopHeads, 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;@20815db1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:05:24,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-26 12:05:24,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:24,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 12:05:24,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:24,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 12:05:24,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:05:24,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:24,240 INFO L85 PathProgramCache]: Analyzing trace with hash 107118, now seen corresponding path program 1 times [2023-11-26 12:05:24,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:24,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482313051] [2023-11-26 12:05:24,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:24,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:24,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:24,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:24,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482313051] [2023-11-26 12:05:24,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482313051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:24,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:24,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:05:24,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076493192] [2023-11-26 12:05:24,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:24,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:05:24,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:24,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:05:24,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:05:24,799 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:24,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:24,919 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2023-11-26 12:05:24,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:05:24,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-26 12:05:24,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:24,931 INFO L225 Difference]: With dead ends: 46 [2023-11-26 12:05:24,932 INFO L226 Difference]: Without dead ends: 23 [2023-11-26 12:05:24,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:05:24,941 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:24,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 49 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:05:24,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-26 12:05:24,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-26 12:05:24,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-11-26 12:05:24,987 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 3 [2023-11-26 12:05:24,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:24,988 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-11-26 12:05:24,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:24,988 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-11-26 12:05:24,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 12:05:24,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:24,989 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 12:05:24,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:05:24,990 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:05:24,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:24,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1103767422, now seen corresponding path program 1 times [2023-11-26 12:05:24,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:24,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109947371] [2023-11-26 12:05:24,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:24,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:25,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:25,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:25,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109947371] [2023-11-26 12:05:25,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109947371] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:05:25,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640640059] [2023-11-26 12:05:25,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:25,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:05:25,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:25,139 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:05:25,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:05:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:25,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:05:25,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:25,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:25,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:05:25,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640640059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:25,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:05:25,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-11-26 12:05:25,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406516723] [2023-11-26 12:05:25,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:25,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:05:25,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:25,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:05:25,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:05:25,351 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:25,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:25,412 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2023-11-26 12:05:25,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:05:25,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-26 12:05:25,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:25,414 INFO L225 Difference]: With dead ends: 23 [2023-11-26 12:05:25,414 INFO L226 Difference]: Without dead ends: 22 [2023-11-26 12:05:25,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:05:25,417 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:25,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 39 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:05:25,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-26 12:05:25,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-26 12:05:25,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:25,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-11-26 12:05:25,424 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 6 [2023-11-26 12:05:25,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:25,425 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-11-26 12:05:25,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:25,425 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-11-26 12:05:25,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 12:05:25,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:25,426 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 12:05:25,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 12:05:25,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:05:25,633 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:05:25,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:25,634 INFO L85 PathProgramCache]: Analyzing trace with hash 142948332, now seen corresponding path program 1 times [2023-11-26 12:05:25,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:25,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103097480] [2023-11-26 12:05:25,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:25,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:25,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:05:25,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:25,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103097480] [2023-11-26 12:05:25,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103097480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:25,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:25,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:05:25,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993545857] [2023-11-26 12:05:25,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:25,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:25,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:25,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:25,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:25,700 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:25,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:25,719 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2023-11-26 12:05:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:25,720 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-26 12:05:25,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:25,721 INFO L225 Difference]: With dead ends: 22 [2023-11-26 12:05:25,722 INFO L226 Difference]: Without dead ends: 21 [2023-11-26 12:05:25,722 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 [2023-11-26 12:05:25,724 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:25,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:05:25,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-26 12:05:25,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2023-11-26 12:05:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.4) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:25,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-11-26 12:05:25,731 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 7 [2023-11-26 12:05:25,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:25,732 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-11-26 12:05:25,732 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:25,732 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-11-26 12:05:25,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 12:05:25,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:25,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:25,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:05:25,734 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:05:25,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:25,735 INFO L85 PathProgramCache]: Analyzing trace with hash 134413051, now seen corresponding path program 1 times [2023-11-26 12:05:25,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:25,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359824082] [2023-11-26 12:05:25,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:25,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:25,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:25,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:25,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359824082] [2023-11-26 12:05:25,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359824082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:05:25,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045821498] [2023-11-26 12:05:25,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:25,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:05:25,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:25,837 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:05:25,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:05:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:25,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:05:25,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:25,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:25,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:05:26,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:26,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045821498] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:05:26,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:05:26,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-26 12:05:26,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141111438] [2023-11-26 12:05:26,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:05:26,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:05:26,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:26,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:05:26,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:05:26,028 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:26,120 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2023-11-26 12:05:26,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:05:26,121 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-26 12:05:26,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:26,122 INFO L225 Difference]: With dead ends: 39 [2023-11-26 12:05:26,122 INFO L226 Difference]: Without dead ends: 25 [2023-11-26 12:05:26,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:05:26,124 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:26,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 70 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:05:26,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-26 12:05:26,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-26 12:05:26,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2023-11-26 12:05:26,132 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 8 [2023-11-26 12:05:26,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:26,133 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2023-11-26 12:05:26,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,134 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2023-11-26 12:05:26,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 12:05:26,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:26,135 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1] [2023-11-26 12:05:26,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:26,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:05:26,342 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:05:26,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:26,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1592241285, now seen corresponding path program 2 times [2023-11-26 12:05:26,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:26,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812436065] [2023-11-26 12:05:26,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:26,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 12:05:26,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:26,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812436065] [2023-11-26 12:05:26,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812436065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:26,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:26,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:05:26,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429447654] [2023-11-26 12:05:26,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:26,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:05:26,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:26,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:05:26,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:05:26,464 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:26,516 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2023-11-26 12:05:26,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:05:26,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-26 12:05:26,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:26,518 INFO L225 Difference]: With dead ends: 38 [2023-11-26 12:05:26,518 INFO L226 Difference]: Without dead ends: 28 [2023-11-26 12:05:26,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:05:26,520 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:26,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 39 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:05:26,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-26 12:05:26,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-26 12:05:26,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.25) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2023-11-26 12:05:26,526 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 14 [2023-11-26 12:05:26,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:26,526 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-11-26 12:05:26,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:26,527 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2023-11-26 12:05:26,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 12:05:26,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:26,528 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:26,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:05:26,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:05:26,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:26,529 INFO L85 PathProgramCache]: Analyzing trace with hash -841239404, now seen corresponding path program 1 times [2023-11-26 12:05:26,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:26,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520763070] [2023-11-26 12:05:26,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:26,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:26,820 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:05:26,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:26,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520763070] [2023-11-26 12:05:26,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520763070] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:05:26,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856228234] [2023-11-26 12:05:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:26,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:05:26,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:26,822 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:05:26,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:05:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:26,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:05:26,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:05:26,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:05:27,106 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:05:27,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856228234] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:05:27,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:05:27,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-26 12:05:27,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471802920] [2023-11-26 12:05:27,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:05:27,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 12:05:27,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:27,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 12:05:27,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-26 12:05:27,115 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:27,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:27,289 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2023-11-26 12:05:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 12:05:27,291 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-26 12:05:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:27,293 INFO L225 Difference]: With dead ends: 57 [2023-11-26 12:05:27,293 INFO L226 Difference]: Without dead ends: 40 [2023-11-26 12:05:27,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-26 12:05:27,295 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 28 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:27,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 95 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:05:27,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-26 12:05:27,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-26 12:05:27,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:27,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2023-11-26 12:05:27,311 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 17 [2023-11-26 12:05:27,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:27,312 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2023-11-26 12:05:27,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:27,312 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2023-11-26 12:05:27,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 12:05:27,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:27,314 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:27,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:27,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 12:05:27,521 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:05:27,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:27,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1736475540, now seen corresponding path program 2 times [2023-11-26 12:05:27,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:27,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863693922] [2023-11-26 12:05:27,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:27,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:05:27,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:27,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863693922] [2023-11-26 12:05:27,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863693922] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:05:27,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500943860] [2023-11-26 12:05:27,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:05:27,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:05:27,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:27,977 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:05:28,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:05:28,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:05:28,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:05:28,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 12:05:28,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:05:28,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:05:28,536 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:05:28,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500943860] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:05:28,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:05:28,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-11-26 12:05:28,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179885798] [2023-11-26 12:05:28,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:05:28,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-26 12:05:28,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:28,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-26 12:05:28,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-11-26 12:05:28,540 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 33 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:28,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:28,919 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2023-11-26 12:05:28,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-26 12:05:28,920 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 33 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-26 12:05:28,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:28,921 INFO L225 Difference]: With dead ends: 81 [2023-11-26 12:05:28,921 INFO L226 Difference]: Without dead ends: 64 [2023-11-26 12:05:28,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=659, Invalid=1597, Unknown=0, NotChecked=0, Total=2256 [2023-11-26 12:05:28,923 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 62 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:28,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 110 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:05:28,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-26 12:05:28,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-26 12:05:28,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 60 states have (on average 1.1) internal successors, (66), 63 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:28,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2023-11-26 12:05:28,934 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 29 [2023-11-26 12:05:28,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:28,934 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2023-11-26 12:05:28,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 33 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2023-11-26 12:05:28,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-26 12:05:28,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:28,936 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:28,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 12:05:29,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 12:05:29,143 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:05:29,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:29,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1722900076, now seen corresponding path program 3 times [2023-11-26 12:05:29,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:29,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639353766] [2023-11-26 12:05:29,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:29,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:30,422 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:05:30,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:30,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639353766] [2023-11-26 12:05:30,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639353766] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:05:30,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646573622] [2023-11-26 12:05:30,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 12:05:30,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:05:30,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:30,431 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:05:30,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 12:05:30,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-26 12:05:30,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:05:30,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:05:30,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:30,670 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-11-26 12:05:30,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:05:30,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646573622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:30,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:05:30,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [32] total 36 [2023-11-26 12:05:30,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726818852] [2023-11-26 12:05:30,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:30,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:05:30,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:30,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:05:30,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=965, Unknown=0, NotChecked=0, Total=1260 [2023-11-26 12:05:30,674 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:30,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:30,726 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2023-11-26 12:05:30,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:05:30,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-26 12:05:30,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:30,728 INFO L225 Difference]: With dead ends: 64 [2023-11-26 12:05:30,728 INFO L226 Difference]: Without dead ends: 63 [2023-11-26 12:05:30,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=300, Invalid=1032, Unknown=0, NotChecked=0, Total=1332 [2023-11-26 12:05:30,730 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:30,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 36 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:05:30,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-26 12:05:30,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-26 12:05:30,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 62 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:30,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2023-11-26 12:05:30,742 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 53 [2023-11-26 12:05:30,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:30,743 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2023-11-26 12:05:30,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:30,743 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2023-11-26 12:05:30,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-26 12:05:30,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:30,745 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 2, 2, 1, 1, 1, 1, 1] [2023-11-26 12:05:30,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-26 12:05:30,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 12:05:30,952 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:05:30,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:30,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1870294740, now seen corresponding path program 1 times [2023-11-26 12:05:30,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:30,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988482695] [2023-11-26 12:05:30,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:30,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-11-26 12:05:31,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:31,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988482695] [2023-11-26 12:05:31,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988482695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:31,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:31,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:05:31,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129497381] [2023-11-26 12:05:31,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:31,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:31,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:31,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:31,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:31,106 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:31,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:31,125 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2023-11-26 12:05:31,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:31,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-26 12:05:31,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:31,127 INFO L225 Difference]: With dead ends: 63 [2023-11-26 12:05:31,127 INFO L226 Difference]: Without dead ends: 62 [2023-11-26 12:05:31,127 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 [2023-11-26 12:05:31,128 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:31,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:05:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-26 12:05:31,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2023-11-26 12:05:31,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 59 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:31,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2023-11-26 12:05:31,138 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 54 [2023-11-26 12:05:31,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:31,139 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2023-11-26 12:05:31,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:31,139 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2023-11-26 12:05:31,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 12:05:31,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:31,141 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:31,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:05:31,142 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:05:31,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:31,142 INFO L85 PathProgramCache]: Analyzing trace with hash -908483023, now seen corresponding path program 1 times [2023-11-26 12:05:31,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:31,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039084255] [2023-11-26 12:05:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:31,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-11-26 12:05:31,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:31,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039084255] [2023-11-26 12:05:31,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039084255] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:05:31,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522734970] [2023-11-26 12:05:31,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:31,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:05:31,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:31,381 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:05:31,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 12:05:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:31,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-26 12:05:31,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:05:32,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:05:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:05:33,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522734970] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:05:33,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:05:33,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 32, 32] total 67 [2023-11-26 12:05:33,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786514213] [2023-11-26 12:05:33,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:05:33,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-11-26 12:05:33,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:33,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-11-26 12:05:33,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1063, Invalid=3359, Unknown=0, NotChecked=0, Total=4422 [2023-11-26 12:05:33,653 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 67 states, 67 states have (on average 1.7014925373134329) internal successors, (114), 67 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:34,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:34,832 INFO L93 Difference]: Finished difference Result 126 states and 146 transitions. [2023-11-26 12:05:34,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-26 12:05:34,836 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.7014925373134329) internal successors, (114), 67 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-11-26 12:05:34,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:34,837 INFO L225 Difference]: With dead ends: 126 [2023-11-26 12:05:34,837 INFO L226 Difference]: Without dead ends: 113 [2023-11-26 12:05:34,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1847 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2539, Invalid=6967, Unknown=0, NotChecked=0, Total=9506 [2023-11-26 12:05:34,843 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 220 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:34,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 107 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:05:34,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-26 12:05:34,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2023-11-26 12:05:34,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.036697247706422) internal successors, (113), 110 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:34,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2023-11-26 12:05:34,858 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 57 [2023-11-26 12:05:34,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:34,859 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2023-11-26 12:05:34,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.7014925373134329) internal successors, (114), 67 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:34,859 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2023-11-26 12:05:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-26 12:05:34,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:34,864 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:34,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:35,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 12:05:35,070 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:05:35,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:35,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1284583176, now seen corresponding path program 2 times [2023-11-26 12:05:35,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:35,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362644304] [2023-11-26 12:05:35,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:35,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2023-11-26 12:05:35,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:35,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362644304] [2023-11-26 12:05:35,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362644304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:35,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:35,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:05:35,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208200523] [2023-11-26 12:05:35,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:35,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:05:35,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:35,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:05:35,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:05:35,341 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:35,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:35,374 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2023-11-26 12:05:35,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:05:35,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-11-26 12:05:35,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:35,377 INFO L225 Difference]: With dead ends: 118 [2023-11-26 12:05:35,377 INFO L226 Difference]: Without dead ends: 116 [2023-11-26 12:05:35,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:05:35,378 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:35,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 31 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:05:35,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-26 12:05:35,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-11-26 12:05:35,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 115 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:35,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2023-11-26 12:05:35,403 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 108 [2023-11-26 12:05:35,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:35,405 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2023-11-26 12:05:35,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:35,405 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2023-11-26 12:05:35,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-26 12:05:35,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:35,411 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:35,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:05:35,411 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:05:35,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:35,412 INFO L85 PathProgramCache]: Analyzing trace with hash -569510614, now seen corresponding path program 1 times [2023-11-26 12:05:35,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:35,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875940605] [2023-11-26 12:05:35,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:35,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:39,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 12:05:39,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:39,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875940605] [2023-11-26 12:05:39,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875940605] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:05:39,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191252082] [2023-11-26 12:05:39,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:39,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:05:39,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:39,197 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:05:39,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 12:05:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:39,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-26 12:05:39,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:39,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 12:05:39,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:05:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 12:05:43,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191252082] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:05:43,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:05:43,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 129 [2023-11-26 12:05:43,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343419859] [2023-11-26 12:05:43,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:05:43,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2023-11-26 12:05:43,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:43,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2023-11-26 12:05:43,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=12480, Unknown=0, NotChecked=0, Total=16770 [2023-11-26 12:05:43,947 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand has 130 states, 130 states have (on average 1.5846153846153845) internal successors, (206), 129 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:47,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:47,422 INFO L93 Difference]: Finished difference Result 233 states and 268 transitions. [2023-11-26 12:05:47,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-11-26 12:05:47,423 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 1.5846153846153845) internal successors, (206), 129 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-11-26 12:05:47,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:47,425 INFO L225 Difference]: With dead ends: 233 [2023-11-26 12:05:47,425 INFO L226 Difference]: Without dead ends: 212 [2023-11-26 12:05:47,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8087 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=10307, Invalid=26365, Unknown=0, NotChecked=0, Total=36672 [2023-11-26 12:05:47,434 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 400 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:47,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 198 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:05:47,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-26 12:05:47,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2023-11-26 12:05:47,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 210 states have (on average 1.019047619047619) internal successors, (214), 211 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:47,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 214 transitions. [2023-11-26 12:05:47,455 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 214 transitions. Word has length 113 [2023-11-26 12:05:47,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:47,456 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 214 transitions. [2023-11-26 12:05:47,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 1.5846153846153845) internal successors, (206), 129 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:47,456 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 214 transitions. [2023-11-26 12:05:47,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-26 12:05:47,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:47,459 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:47,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:47,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 12:05:47,660 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:05:47,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:47,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1153330474, now seen corresponding path program 2 times [2023-11-26 12:05:47,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:47,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146204552] [2023-11-26 12:05:47,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:47,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5931 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 12:05:59,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:59,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146204552] [2023-11-26 12:05:59,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146204552] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:05:59,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60908845] [2023-11-26 12:05:59,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:05:59,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:05:59,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:59,741 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:05:59,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da86f0ae-4f5f-468e-9d0a-6ebbc75ae101/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 12:06:00,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:06:00,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:06:00,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 1295 conjuncts, 128 conjunts are in the unsatisfiable core [2023-11-26 12:06:00,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5931 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 12:06:00,783 INFO L327 TraceCheckSpWp]: Computing backward predicates...