./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-simple/sll2n_prepend_unequal.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_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya --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 277634da297b7f9e262585608ed7ad62cca7d59b0122d4e61ee1b4b78256acae --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:55:29,572 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:55:29,645 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 23:55:29,651 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:55:29,651 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:55:29,677 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:55:29,677 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:55:29,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:55:29,679 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:55:29,679 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:55:29,680 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:55:29,680 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:55:29,681 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:55:29,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:55:29,682 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:55:29,683 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:55:29,683 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:55:29,684 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:55:29,684 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:55:29,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:55:29,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:55:29,687 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:55:29,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:55:29,688 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:55:29,688 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 23:55:29,689 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:55:29,689 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:55:29,689 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:55:29,690 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:55:29,690 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:55:29,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:55:29,691 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:55:29,691 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:55:29,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:55:29,692 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:55:29,692 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:55:29,692 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:55:29,693 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:55:29,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:55:29,693 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:55:29,693 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:55:29,694 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:55:29,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:55:29,694 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:55:29,694 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_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 277634da297b7f9e262585608ed7ad62cca7d59b0122d4e61ee1b4b78256acae [2023-11-28 23:55:29,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:55:29,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:55:29,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:55:29,959 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:55:29,960 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:55:29,961 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i [2023-11-28 23:55:32,968 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:55:33,197 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:55:33,198 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i [2023-11-28 23:55:33,209 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/data/53f640562/4ddd66850a4e476b9e67d6ad03652e33/FLAGfc22bea7b [2023-11-28 23:55:33,224 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/data/53f640562/4ddd66850a4e476b9e67d6ad03652e33 [2023-11-28 23:55:33,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:55:33,228 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:55:33,229 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:55:33,230 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:55:33,236 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:55:33,236 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:55:33" (1/1) ... [2023-11-28 23:55:33,237 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@687cd318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:33, skipping insertion in model container [2023-11-28 23:55:33,238 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:55:33" (1/1) ... [2023-11-28 23:55:33,289 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:55:33,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:55:33,587 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:55:33,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:55:33,666 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:55:33,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:33 WrapperNode [2023-11-28 23:55:33,667 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:55:33,668 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:55:33,669 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:55:33,669 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:55:33,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:33" (1/1) ... [2023-11-28 23:55:33,692 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:33" (1/1) ... [2023-11-28 23:55:33,721 INFO L138 Inliner]: procedures = 127, calls = 33, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 123 [2023-11-28 23:55:33,722 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:55:33,723 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:55:33,723 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:55:33,723 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:55:33,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:33" (1/1) ... [2023-11-28 23:55:33,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:33" (1/1) ... [2023-11-28 23:55:33,742 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:33" (1/1) ... [2023-11-28 23:55:33,764 INFO L175 MemorySlicer]: Split 16 memory accesses to 3 slices as follows [2, 5, 9]. 56 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 5 writes are split as follows [0, 1, 4]. [2023-11-28 23:55:33,764 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:33" (1/1) ... [2023-11-28 23:55:33,765 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:33" (1/1) ... [2023-11-28 23:55:33,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:33" (1/1) ... [2023-11-28 23:55:33,779 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:33" (1/1) ... [2023-11-28 23:55:33,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:33" (1/1) ... [2023-11-28 23:55:33,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:33" (1/1) ... [2023-11-28 23:55:33,789 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:55:33,790 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:55:33,790 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:55:33,790 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:55:33,792 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:33" (1/1) ... [2023-11-28 23:55:33,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:55:33,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:33,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:55:33,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:55:33,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 23:55:33,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 23:55:33,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 23:55:33,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 23:55:33,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 23:55:33,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 23:55:33,871 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2023-11-28 23:55:33,871 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2023-11-28 23:55:33,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-28 23:55:33,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:55:33,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:55:33,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-28 23:55:33,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-28 23:55:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-28 23:55:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-28 23:55:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-28 23:55:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-28 23:55:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:55:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-28 23:55:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-28 23:55:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-28 23:55:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:55:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 23:55:33,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 23:55:33,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:55:33,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:55:34,022 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:55:34,025 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:55:34,243 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:55:34,288 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:55:34,288 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-28 23:55:34,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:55:34 BoogieIcfgContainer [2023-11-28 23:55:34,289 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:55:34,291 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:55:34,291 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:55:34,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:55:34,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:55:33" (1/3) ... [2023-11-28 23:55:34,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37bc1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:55:34, skipping insertion in model container [2023-11-28 23:55:34,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:33" (2/3) ... [2023-11-28 23:55:34,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37bc1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:55:34, skipping insertion in model container [2023-11-28 23:55:34,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:55:34" (3/3) ... [2023-11-28 23:55:34,299 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_prepend_unequal.i [2023-11-28 23:55:34,322 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:55:34,322 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-28 23:55:34,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:55:34,389 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;@7c0bd2d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:55:34,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-28 23:55:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 30 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-28 23:55:34,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-28 23:55:34,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:34,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:34,405 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)] === [2023-11-28 23:55:34,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:34,412 INFO L85 PathProgramCache]: Analyzing trace with hash -262375019, now seen corresponding path program 1 times [2023-11-28 23:55:34,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:34,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86488264] [2023-11-28 23:55:34,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:34,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:34,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:55:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:34,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:34,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86488264] [2023-11-28 23:55:34,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86488264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:34,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:34,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:55:34,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523526689] [2023-11-28 23:55:34,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:34,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:55:34,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:34,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:55:34,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:55:34,862 INFO L87 Difference]: Start difference. First operand has 34 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 30 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 23:55:34,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:34,977 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2023-11-28 23:55:34,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:55:34,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2023-11-28 23:55:34,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:34,989 INFO L225 Difference]: With dead ends: 66 [2023-11-28 23:55:34,990 INFO L226 Difference]: Without dead ends: 30 [2023-11-28 23:55:34,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:55:34,997 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:34,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:55:35,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-28 23:55:35,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-28 23:55:35,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.35) internal successors, (27), 25 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-28 23:55:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-11-28 23:55:35,042 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 8 [2023-11-28 23:55:35,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:35,044 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-11-28 23:55:35,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 23:55:35,045 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-11-28 23:55:35,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-28 23:55:35,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:35,047 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-28 23:55:35,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:55:35,047 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)] === [2023-11-28 23:55:35,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:35,048 INFO L85 PathProgramCache]: Analyzing trace with hash 461262433, now seen corresponding path program 1 times [2023-11-28 23:55:35,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:35,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719737971] [2023-11-28 23:55:35,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:35,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:35,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:55:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:35,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:55:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 23:55:35,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:35,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719737971] [2023-11-28 23:55:35,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719737971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:35,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:35,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:55:35,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984610318] [2023-11-28 23:55:35,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:35,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:55:35,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:35,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:55:35,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:55:35,235 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-28 23:55:35,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:35,316 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2023-11-28 23:55:35,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:55:35,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-11-28 23:55:35,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:35,318 INFO L225 Difference]: With dead ends: 30 [2023-11-28 23:55:35,319 INFO L226 Difference]: Without dead ends: 29 [2023-11-28 23:55:35,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:55:35,321 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:35,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 58 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:55:35,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-28 23:55:35,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-28 23:55:35,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 24 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-28 23:55:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-11-28 23:55:35,330 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 16 [2023-11-28 23:55:35,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:35,330 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-11-28 23:55:35,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-28 23:55:35,331 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-11-28 23:55:35,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-28 23:55:35,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:35,332 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-11-28 23:55:35,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 23:55:35,333 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)] === [2023-11-28 23:55:35,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:35,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1414233583, now seen corresponding path program 1 times [2023-11-28 23:55:35,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:35,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785590491] [2023-11-28 23:55:35,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:35,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:35,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:55:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:35,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:55:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:35,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:55:35,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:35,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785590491] [2023-11-28 23:55:35,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785590491] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:35,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026826399] [2023-11-28 23:55:35,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:35,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:35,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:35,539 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:35,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:55:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:35,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 23:55:35,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:55:35,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:35,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026826399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:35,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:55:35,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2023-11-28 23:55:35,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949234752] [2023-11-28 23:55:35,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:35,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:55:35,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:35,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:55:35,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:55:35,780 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-28 23:55:35,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:35,851 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2023-11-28 23:55:35,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:55:35,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-11-28 23:55:35,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:35,853 INFO L225 Difference]: With dead ends: 29 [2023-11-28 23:55:35,853 INFO L226 Difference]: Without dead ends: 28 [2023-11-28 23:55:35,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:55:35,855 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:35,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 70 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:55:35,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-28 23:55:35,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2023-11-28 23:55:35,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-28 23:55:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-11-28 23:55:35,863 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2023-11-28 23:55:35,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:35,863 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-11-28 23:55:35,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-28 23:55:35,863 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-11-28 23:55:35,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-28 23:55:35,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:35,864 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:35,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:55:36,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-28 23:55:36,066 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-28 23:55:36,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:36,066 INFO L85 PathProgramCache]: Analyzing trace with hash 670557169, now seen corresponding path program 1 times [2023-11-28 23:55:36,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:36,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411623932] [2023-11-28 23:55:36,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:36,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:36,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:55:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:36,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-28 23:55:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:36,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:55:36,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:36,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411623932] [2023-11-28 23:55:36,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411623932] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:36,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109118504] [2023-11-28 23:55:36,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:36,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:36,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:36,232 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:36,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:55:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:36,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 23:55:36,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:36,445 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 23:55:36,445 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:36,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109118504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:36,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:55:36,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-28 23:55:36,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680262519] [2023-11-28 23:55:36,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:36,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:55:36,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:36,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:55:36,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:55:36,448 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 23:55:36,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:36,470 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2023-11-28 23:55:36,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:55:36,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-11-28 23:55:36,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:36,472 INFO L225 Difference]: With dead ends: 24 [2023-11-28 23:55:36,472 INFO L226 Difference]: Without dead ends: 23 [2023-11-28 23:55:36,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:55:36,474 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:36,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 20 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:55:36,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-28 23:55:36,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-28 23:55:36,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-28 23:55:36,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-11-28 23:55:36,481 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2023-11-28 23:55:36,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:36,482 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-11-28 23:55:36,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 23:55:36,482 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-11-28 23:55:36,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-28 23:55:36,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:36,483 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:36,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:55:36,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:36,685 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-28 23:55:36,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:36,686 INFO L85 PathProgramCache]: Analyzing trace with hash -687564153, now seen corresponding path program 1 times [2023-11-28 23:55:36,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:36,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813874765] [2023-11-28 23:55:36,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:36,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:36,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:55:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:36,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-28 23:55:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:36,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:55:36,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:36,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813874765] [2023-11-28 23:55:36,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813874765] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:36,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291335484] [2023-11-28 23:55:36,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:36,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:36,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:36,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:36,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:55:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:36,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 23:55:36,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 23:55:37,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:37,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291335484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:37,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:55:37,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-28 23:55:37,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030618822] [2023-11-28 23:55:37,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:37,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:55:37,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:37,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:55:37,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:55:37,005 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 23:55:37,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:37,021 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2023-11-28 23:55:37,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:55:37,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-11-28 23:55:37,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:37,022 INFO L225 Difference]: With dead ends: 23 [2023-11-28 23:55:37,022 INFO L226 Difference]: Without dead ends: 20 [2023-11-28 23:55:37,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:55:37,023 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:37,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:55:37,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-28 23:55:37,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-28 23:55:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-28 23:55:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2023-11-28 23:55:37,028 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 20 [2023-11-28 23:55:37,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:37,028 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2023-11-28 23:55:37,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 23:55:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2023-11-28 23:55:37,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-28 23:55:37,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:37,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:37,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:55:37,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:37,233 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)] === [2023-11-28 23:55:37,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:37,233 INFO L85 PathProgramCache]: Analyzing trace with hash -687562519, now seen corresponding path program 1 times [2023-11-28 23:55:37,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:37,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902567812] [2023-11-28 23:55:37,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:37,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:37,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:55:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:37,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-28 23:55:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:55:37,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:37,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902567812] [2023-11-28 23:55:37,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902567812] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:37,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408288537] [2023-11-28 23:55:37,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:37,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:37,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:37,376 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:37,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:55:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:37,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:55:37,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:37,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:37,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:55:37,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408288537] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:37,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:37,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2023-11-28 23:55:37,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874495553] [2023-11-28 23:55:37,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:37,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:55:37,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:37,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:55:37,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:55:37,607 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-28 23:55:37,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:37,668 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2023-11-28 23:55:37,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:55:37,669 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2023-11-28 23:55:37,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:37,669 INFO L225 Difference]: With dead ends: 38 [2023-11-28 23:55:37,670 INFO L226 Difference]: Without dead ends: 25 [2023-11-28 23:55:37,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:55:37,671 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:37,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 53 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:55:37,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-28 23:55:37,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-28 23:55:37,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-28 23:55:37,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2023-11-28 23:55:37,677 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 20 [2023-11-28 23:55:37,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:37,677 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2023-11-28 23:55:37,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-28 23:55:37,677 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2023-11-28 23:55:37,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-28 23:55:37,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:37,678 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:37,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 23:55:37,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:37,881 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)] === [2023-11-28 23:55:37,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:37,882 INFO L85 PathProgramCache]: Analyzing trace with hash -361651275, now seen corresponding path program 2 times [2023-11-28 23:55:37,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:37,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863047793] [2023-11-28 23:55:37,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:37,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:55:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:55:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-28 23:55:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:55:38,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:38,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863047793] [2023-11-28 23:55:38,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863047793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:38,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:38,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:55:38,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084957752] [2023-11-28 23:55:38,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:38,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:55:38,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:38,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:55:38,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:55:38,030 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 23:55:38,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:38,086 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2023-11-28 23:55:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:55:38,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-11-28 23:55:38,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:38,087 INFO L225 Difference]: With dead ends: 31 [2023-11-28 23:55:38,087 INFO L226 Difference]: Without dead ends: 29 [2023-11-28 23:55:38,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:55:38,089 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:38,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 42 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:55:38,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-28 23:55:38,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-28 23:55:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-28 23:55:38,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-11-28 23:55:38,109 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 28 [2023-11-28 23:55:38,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:38,110 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-11-28 23:55:38,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 23:55:38,110 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-11-28 23:55:38,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-28 23:55:38,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:38,111 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:38,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 23:55:38,112 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)] === [2023-11-28 23:55:38,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:38,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1292151598, now seen corresponding path program 1 times [2023-11-28 23:55:38,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:38,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897972279] [2023-11-28 23:55:38,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:38,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:55:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:55:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-28 23:55:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:55:38,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:38,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897972279] [2023-11-28 23:55:38,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897972279] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:38,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435129513] [2023-11-28 23:55:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:38,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:38,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:38,298 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:38,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:55:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:55:38,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:55:38,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:38,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435129513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:38,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:55:38,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2023-11-28 23:55:38,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118827054] [2023-11-28 23:55:38,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:38,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:55:38,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:38,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:55:38,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:55:38,536 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 23:55:38,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:38,600 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2023-11-28 23:55:38,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:55:38,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2023-11-28 23:55:38,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:38,602 INFO L225 Difference]: With dead ends: 29 [2023-11-28 23:55:38,602 INFO L226 Difference]: Without dead ends: 28 [2023-11-28 23:55:38,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:55:38,603 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:38,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:55:38,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-28 23:55:38,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-28 23:55:38,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-28 23:55:38,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-11-28 23:55:38,609 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 32 [2023-11-28 23:55:38,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:38,609 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-11-28 23:55:38,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 23:55:38,610 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-11-28 23:55:38,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-28 23:55:38,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:38,611 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:38,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 23:55:38,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:38,817 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)] === [2023-11-28 23:55:38,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:38,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1401993955, now seen corresponding path program 1 times [2023-11-28 23:55:38,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:38,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679080692] [2023-11-28 23:55:38,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:38,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:55:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:55:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-28 23:55:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:39,001 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:55:39,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:39,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679080692] [2023-11-28 23:55:39,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679080692] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:39,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71847093] [2023-11-28 23:55:39,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:39,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:39,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:39,003 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:39,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:55:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:39,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:55:39,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:55:39,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:55:39,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71847093] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:39,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:39,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2023-11-28 23:55:39,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545574392] [2023-11-28 23:55:39,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:39,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-28 23:55:39,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:39,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-28 23:55:39,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:55:39,321 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 23:55:39,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:39,444 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2023-11-28 23:55:39,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:55:39,445 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2023-11-28 23:55:39,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:39,446 INFO L225 Difference]: With dead ends: 41 [2023-11-28 23:55:39,446 INFO L226 Difference]: Without dead ends: 40 [2023-11-28 23:55:39,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-28 23:55:39,447 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:39,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:55:39,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-28 23:55:39,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-28 23:55:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-28 23:55:39,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2023-11-28 23:55:39,455 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 33 [2023-11-28 23:55:39,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:39,456 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2023-11-28 23:55:39,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 23:55:39,456 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2023-11-28 23:55:39,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-28 23:55:39,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:39,457 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:39,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 23:55:39,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:39,661 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-28 23:55:39,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:39,662 INFO L85 PathProgramCache]: Analyzing trace with hash 394554584, now seen corresponding path program 2 times [2023-11-28 23:55:39,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:39,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321357310] [2023-11-28 23:55:39,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:39,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:39,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:55:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:39,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:55:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:39,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-28 23:55:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:39,984 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:55:39,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:39,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321357310] [2023-11-28 23:55:39,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321357310] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:39,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247820453] [2023-11-28 23:55:39,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:55:39,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:39,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:39,986 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:39,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:55:40,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:55:40,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:55:40,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 23:55:40,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:55:40,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:55:40,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247820453] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:40,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:40,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2023-11-28 23:55:40,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078829724] [2023-11-28 23:55:40,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:40,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-28 23:55:40,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:40,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-28 23:55:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2023-11-28 23:55:40,499 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 25 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 23:55:40,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:40,750 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2023-11-28 23:55:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-28 23:55:40,751 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2023-11-28 23:55:40,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:40,752 INFO L225 Difference]: With dead ends: 65 [2023-11-28 23:55:40,752 INFO L226 Difference]: Without dead ends: 64 [2023-11-28 23:55:40,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=334, Invalid=856, Unknown=0, NotChecked=0, Total=1190 [2023-11-28 23:55:40,754 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 36 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 85 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 [2023-11-28 23:55:40,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 85 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:55:40,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-28 23:55:40,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-28 23:55:40,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-28 23:55:40,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2023-11-28 23:55:40,765 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 45 [2023-11-28 23:55:40,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:40,765 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2023-11-28 23:55:40,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 23:55:40,766 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2023-11-28 23:55:40,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-28 23:55:40,767 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:40,767 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:40,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 23:55:40,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-28 23:55:40,973 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-28 23:55:40,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:40,973 INFO L85 PathProgramCache]: Analyzing trace with hash 608582210, now seen corresponding path program 3 times [2023-11-28 23:55:40,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:40,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589346360] [2023-11-28 23:55:40,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:40,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:41,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:55:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:41,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:55:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:41,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-28 23:55:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:55:41,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:41,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589346360] [2023-11-28 23:55:41,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589346360] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:41,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381117936] [2023-11-28 23:55:41,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 23:55:41,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:41,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:41,664 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:41,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:55:42,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-11-28 23:55:42,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:55:42,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 121 conjunts are in the unsatisfiable core [2023-11-28 23:55:42,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:42,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-28 23:55:42,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-28 23:55:43,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-28 23:55:43,299 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-28 23:55:43,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-28 23:55:43,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-28 23:55:43,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-28 23:55:43,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2023-11-28 23:55:43,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2023-11-28 23:55:43,687 INFO L349 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-11-28 23:55:43,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 43 [2023-11-28 23:55:43,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 9 [2023-11-28 23:55:43,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-28 23:55:43,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:43,819 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-11-28 23:55:43,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 124 treesize of output 107 [2023-11-28 23:55:43,838 INFO L349 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2023-11-28 23:55:43,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2023-11-28 23:55:43,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 75 [2023-11-28 23:55:44,007 INFO L349 Elim1Store]: treesize reduction 115, result has 16.7 percent of original size [2023-11-28 23:55:44,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 136 treesize of output 99 [2023-11-28 23:55:44,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 87 [2023-11-28 23:55:44,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 104 [2023-11-28 23:55:44,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 114 [2023-11-28 23:55:44,837 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 81 proven. 18 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-11-28 23:55:44,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:53,323 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:53,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 451 treesize of output 435 [2023-11-28 23:55:53,355 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:53,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 388 treesize of output 372 [2023-11-28 23:55:53,438 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-11-28 23:55:53,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 8 [2023-11-28 23:55:53,521 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-11-28 23:55:53,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 8 [2023-11-28 23:55:54,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381117936] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:54,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:55:54,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 45 [2023-11-28 23:55:54,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671765471] [2023-11-28 23:55:54,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:54,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-28 23:55:54,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:54,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-28 23:55:54,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2329, Unknown=0, NotChecked=0, Total=2550 [2023-11-28 23:55:54,053 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 45 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 40 states have internal predecessors, (88), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-28 23:55:56,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:56,139 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2023-11-28 23:55:56,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-28 23:55:56,140 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 40 states have internal predecessors, (88), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 69 [2023-11-28 23:55:56,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:56,141 INFO L225 Difference]: With dead ends: 124 [2023-11-28 23:55:56,141 INFO L226 Difference]: Without dead ends: 75 [2023-11-28 23:55:56,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=597, Invalid=4515, Unknown=0, NotChecked=0, Total=5112 [2023-11-28 23:55:56,145 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 80 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:56,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 328 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-28 23:55:56,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-28 23:55:56,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2023-11-28 23:55:56,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-28 23:55:56,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2023-11-28 23:55:56,155 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 69 [2023-11-28 23:55:56,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:56,156 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2023-11-28 23:55:56,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 40 states have internal predecessors, (88), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-28 23:55:56,156 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2023-11-28 23:55:56,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-28 23:55:56,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:56,157 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:56,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 23:55:56,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-28 23:55:56,360 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-28 23:55:56,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:56,361 INFO L85 PathProgramCache]: Analyzing trace with hash -2114563171, now seen corresponding path program 4 times [2023-11-28 23:55:56,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:56,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432593954] [2023-11-28 23:55:56,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:56,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:56,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:55:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:56,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:55:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:56,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-28 23:55:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:56,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-28 23:55:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-11-28 23:55:56,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:56,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432593954] [2023-11-28 23:55:56,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432593954] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:56,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958418416] [2023-11-28 23:55:56,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-28 23:55:56,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:56,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:56,649 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:56,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:55:57,631 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-28 23:55:57,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:55:57,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 23:55:57,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-11-28 23:55:57,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:57,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958418416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:57,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:55:57,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 10 [2023-11-28 23:55:57,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909993942] [2023-11-28 23:55:57,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:57,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:55:57,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:57,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:55:57,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:55:57,701 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-28 23:55:57,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:57,756 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2023-11-28 23:55:57,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:55:57,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 81 [2023-11-28 23:55:57,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:57,757 INFO L225 Difference]: With dead ends: 76 [2023-11-28 23:55:57,757 INFO L226 Difference]: Without dead ends: 0 [2023-11-28 23:55:57,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:55:57,758 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:57,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:55:57,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-28 23:55:57,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-28 23:55:57,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:57,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-28 23:55:57,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2023-11-28 23:55:57,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:57,760 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-28 23:55:57,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-28 23:55:57,760 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-28 23:55:57,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-28 23:55:57,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-11-28 23:55:57,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-11-28 23:55:57,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-11-28 23:55:57,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-11-28 23:55:57,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-11-28 23:55:57,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-11-28 23:55:57,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 23:55:57,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-28 23:55:57,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-28 23:55:58,132 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 622) no Hoare annotation was computed. [2023-11-28 23:55:58,132 INFO L902 garLoopResultBuilder]: At program point L593-2(lines 593 597) the Hoare annotation is: true [2023-11-28 23:55:58,132 INFO L899 garLoopResultBuilder]: For program point L622(line 622) no Hoare annotation was computed. [2023-11-28 23:55:58,132 INFO L899 garLoopResultBuilder]: For program point L622-1(line 622) no Hoare annotation was computed. [2023-11-28 23:55:58,132 INFO L899 garLoopResultBuilder]: For program point L618(lines 618 620) no Hoare annotation was computed. [2023-11-28 23:55:58,132 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 604 631) no Hoare annotation was computed. [2023-11-28 23:55:58,133 INFO L899 garLoopResultBuilder]: For program point L585-3(line 585) no Hoare annotation was computed. [2023-11-28 23:55:58,133 INFO L899 garLoopResultBuilder]: For program point L585-4(line 585) no Hoare annotation was computed. [2023-11-28 23:55:58,133 INFO L895 garLoopResultBuilder]: At program point L585-5(lines 585 589) the Hoare annotation is: (let ((.cse6 (+ |ULTIMATE.start_sll_create_~head~0#1.offset| 4))) (let ((.cse0 (select (select |#memory_$Pointer$#2.base| |ULTIMATE.start_sll_create_~head~0#1.base|) .cse6)) (.cse2 (= (select |#valid| |ULTIMATE.start_sll_create_~head~0#1.base|) 1)) (.cse5 (select (select |#memory_$Pointer$#2.offset| |ULTIMATE.start_sll_create_~head~0#1.base|) .cse6)) (.cse3 (= |ULTIMATE.start_main_~#s~0#1.offset| 0)) (.cse4 (= |ULTIMATE.start_main_~len~0#1| 2))) (or (let ((.cse1 (+ .cse5 4))) (and (= (select (select |#memory_$Pointer$#2.base| .cse0) .cse1) 0) (not (= .cse0 |ULTIMATE.start_sll_create_~head~0#1.base|)) (= (select (select |#memory_$Pointer$#2.offset| .cse0) .cse1) 0) .cse2 (<= |ULTIMATE.start_sll_create_~len#1| 0) (= (select |#valid| .cse0) 1) .cse3 .cse4)) (and (= 2 |ULTIMATE.start_sll_create_~len#1|) (= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (= |ULTIMATE.start_sll_create_~head~0#1.base| 0) .cse3 .cse4) (and (= .cse0 0) .cse2 (= .cse5 0) (= |ULTIMATE.start_sll_create_~len#1| 1) .cse3 .cse4)))) [2023-11-28 23:55:58,133 INFO L899 garLoopResultBuilder]: For program point L585-6(lines 585 589) no Hoare annotation was computed. [2023-11-28 23:55:58,133 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 585) no Hoare annotation was computed. [2023-11-28 23:55:58,133 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 624) no Hoare annotation was computed. [2023-11-28 23:55:58,133 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-11-28 23:55:58,134 INFO L895 garLoopResultBuilder]: At program point L586(line 586) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~#s~0#1.offset| 0)) (.cse1 (= |ULTIMATE.start_main_~len~0#1| 2))) (or (and (= 2 |ULTIMATE.start_sll_create_~len#1|) (= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (= |ULTIMATE.start_sll_create_~head~0#1.base| 0) .cse0 .cse1) (let ((.cse2 (+ |ULTIMATE.start_sll_create_~head~0#1.offset| 4))) (and (= (select (select |#memory_$Pointer$#2.base| |ULTIMATE.start_sll_create_~head~0#1.base|) .cse2) 0) (= (select |#valid| |ULTIMATE.start_sll_create_~head~0#1.base|) 1) (= (select (select |#memory_$Pointer$#2.offset| |ULTIMATE.start_sll_create_~head~0#1.base|) .cse2) 0) (= |ULTIMATE.start_sll_create_~len#1| 1) .cse0 .cse1)))) [2023-11-28 23:55:58,134 INFO L899 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2023-11-28 23:55:58,134 INFO L899 garLoopResultBuilder]: For program point L586-1(line 586) no Hoare annotation was computed. [2023-11-28 23:55:58,134 INFO L899 garLoopResultBuilder]: For program point L611(lines 611 613) no Hoare annotation was computed. [2023-11-28 23:55:58,134 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 585) no Hoare annotation was computed. [2023-11-28 23:55:58,134 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-28 23:55:58,134 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 624) no Hoare annotation was computed. [2023-11-28 23:55:58,134 INFO L899 garLoopResultBuilder]: For program point L624(line 624) no Hoare annotation was computed. [2023-11-28 23:55:58,134 INFO L899 garLoopResultBuilder]: For program point L624-1(lines 624 626) no Hoare annotation was computed. [2023-11-28 23:55:58,135 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-28 23:55:58,135 INFO L895 garLoopResultBuilder]: At program point L616-2(lines 616 623) the Hoare annotation is: (let ((.cse6 (= |ULTIMATE.start_main_~len~0#1| 2))) (or (and (exists ((|v_ULTIMATE.start_main_~ptr~0#1.base_27| Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_27| Int)) (let ((.cse5 (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_27| 4))) (let ((.cse3 (select (select |#memory_$Pointer$#2.base| |v_ULTIMATE.start_main_~ptr~0#1.base_27|) .cse5)) (.cse4 (+ (select (select |#memory_$Pointer$#2.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_27|) .cse5) 4))) (let ((.cse2 (select (select |#memory_$Pointer$#2.offset| .cse3) .cse4))) (let ((.cse1 (+ .cse2 4)) (.cse0 (select (select |#memory_$Pointer$#2.base| .cse3) .cse4))) (and (= (select (select |#memory_$Pointer$#2.offset| .cse0) .cse1) 0) (= .cse2 |ULTIMATE.start_main_~ptr~0#1.offset|) (not (= .cse0 |v_ULTIMATE.start_main_~ptr~0#1.base_27|)) (not (= .cse3 |v_ULTIMATE.start_main_~ptr~0#1.base_27|)) (not (= .cse0 .cse3)) (= (select (select |#memory_$Pointer$#2.base| .cse0) .cse1) 0) (= .cse0 |ULTIMATE.start_main_~ptr~0#1.base|))))))) .cse6 (= 2 |ULTIMATE.start_main_~count~0#1|)) (and (= |ULTIMATE.start_main_~count~0#1| 1) (exists ((|v_ULTIMATE.start_main_~ptr~0#1.base_27| Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_27| Int)) (let ((.cse12 (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_27| 4))) (let ((.cse9 (select (select |#memory_$Pointer$#2.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_27|) .cse12))) (let ((.cse10 (select (select |#memory_$Pointer$#2.base| |v_ULTIMATE.start_main_~ptr~0#1.base_27|) .cse12)) (.cse11 (+ .cse9 4))) (let ((.cse7 (select (select |#memory_$Pointer$#2.base| .cse10) .cse11)) (.cse8 (+ (select (select |#memory_$Pointer$#2.offset| .cse10) .cse11) 4))) (and (= (select (select |#memory_$Pointer$#2.offset| .cse7) .cse8) 0) (= .cse9 |ULTIMATE.start_main_~ptr~0#1.offset|) (= |ULTIMATE.start_main_~ptr~0#1.base| .cse10) (not (= .cse7 |v_ULTIMATE.start_main_~ptr~0#1.base_27|)) (not (= .cse10 |v_ULTIMATE.start_main_~ptr~0#1.base_27|)) (not (= .cse7 .cse10)) (= (select (select |#memory_$Pointer$#2.base| .cse7) .cse8) 0))))))) .cse6) (and (<= |ULTIMATE.start_main_~count~0#1| 3) (<= 2 |ULTIMATE.start_main_~count~0#1|) (= |ULTIMATE.start_main_~ptr~0#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| 0) .cse6))) [2023-11-28 23:55:58,135 INFO L899 garLoopResultBuilder]: For program point L616-3(lines 616 623) no Hoare annotation was computed. [2023-11-28 23:55:58,135 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 622) no Hoare annotation was computed. [2023-11-28 23:55:58,136 INFO L895 garLoopResultBuilder]: At program point L600(line 600) the Hoare annotation is: (let ((.cse2 (select (select |#memory_$Pointer$#1.base| |ULTIMATE.start_main_~#s~0#1.base|) 0)) (.cse3 (+ (select (select |#memory_$Pointer$#1.offset| |ULTIMATE.start_main_~#s~0#1.base|) 0) 4))) (let ((.cse1 (+ (select (select |#memory_$Pointer$#2.offset| .cse2) .cse3) 4)) (.cse0 (select (select |#memory_$Pointer$#2.base| .cse2) .cse3))) (and (= (select (select |#memory_$Pointer$#2.base| .cse0) .cse1) 0) (= |ULTIMATE.start_sll_prepend_~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (= (select |#valid| .cse2) 1) (= (select |#valid| .cse0) 1) (= (select (select |#memory_$Pointer$#2.offset| .cse0) .cse1) 0) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |ULTIMATE.start_sll_prepend_~head#1.offset| 0) (not (= .cse2 .cse0))))) [2023-11-28 23:55:58,136 INFO L899 garLoopResultBuilder]: For program point L600-1(line 600) no Hoare annotation was computed. [2023-11-28 23:55:58,136 INFO L899 garLoopResultBuilder]: For program point main_ERROR#1(lines 604 631) no Hoare annotation was computed. [2023-11-28 23:55:58,136 INFO L899 garLoopResultBuilder]: For program point L592(lines 592 598) no Hoare annotation was computed. [2023-11-28 23:55:58,136 INFO L899 garLoopResultBuilder]: For program point L576(lines 576 578) no Hoare annotation was computed. [2023-11-28 23:55:58,136 INFO L899 garLoopResultBuilder]: For program point L572(line 572) no Hoare annotation was computed. [2023-11-28 23:55:58,136 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 574 582) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_$Pointer$#2.base)| |#memory_$Pointer$#2.base|) (= |#memory_int#2| |old(#memory_int#2)|) (= |#memory_$Pointer$#2.offset| |old(#memory_$Pointer$#2.offset)|) (= |old(#valid)| |#valid|)) [2023-11-28 23:55:58,136 INFO L899 garLoopResultBuilder]: For program point node_createEXIT(lines 574 582) no Hoare annotation was computed. [2023-11-28 23:55:58,139 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:58,141 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 23:55:58,158 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start_main_~ptr~0#1.base_27 : int, v_ULTIMATE.start_main_~ptr~0#1.offset_27 : int :: (((((#memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4]][#memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] + 4] == 0 && #memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] == ~ptr~0!offset) && !(#memory_$Pointer$#2.base[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] == v_ULTIMATE.start_main_~ptr~0#1.base_27)) && !(#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] == v_ULTIMATE.start_main_~ptr~0#1.base_27)) && !(#memory_$Pointer$#2.base[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] == #memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4])) && #memory_$Pointer$#2.base[#memory_$Pointer$#2.base[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4]][#memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] + 4] == 0) && #memory_$Pointer$#2.base[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] == ~ptr~0!base) could not be translated [2023-11-28 23:55:58,160 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start_main_~ptr~0#1.base_27 : int, v_ULTIMATE.start_main_~ptr~0#1.offset_27 : int :: (((((#memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4]][#memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] + 4] == 0 && #memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] == ~ptr~0!offset) && ~ptr~0!base == #memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]) && !(#memory_$Pointer$#2.base[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] == v_ULTIMATE.start_main_~ptr~0#1.base_27)) && !(#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] == v_ULTIMATE.start_main_~ptr~0#1.base_27)) && !(#memory_$Pointer$#2.base[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] == #memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4])) && #memory_$Pointer$#2.base[#memory_$Pointer$#2.base[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4]][#memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] + 4] == 0) could not be translated [2023-11-28 23:55:58,163 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[#memory_$Pointer$#2.base[~head~0!base][~head~0!offset + 4]][#memory_$Pointer$#2.offset[~head~0!base][~head~0!offset + 4] + 4] could not be translated [2023-11-28 23:55:58,163 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[~head~0!base][~head~0!offset + 4] could not be translated [2023-11-28 23:55:58,163 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[~head~0!base][~head~0!offset + 4]][#memory_$Pointer$#2.offset[~head~0!base][~head~0!offset + 4] + 4] could not be translated [2023-11-28 23:55:58,163 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[~head~0!base] could not be translated [2023-11-28 23:55:58,164 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[#memory_$Pointer$#2.base[~head~0!base][~head~0!offset + 4]] could not be translated [2023-11-28 23:55:58,164 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[~head~0!base][~head~0!offset + 4] could not be translated [2023-11-28 23:55:58,164 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[~head~0!base] could not be translated [2023-11-28 23:55:58,165 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[~head~0!base][~head~0!offset + 4] could not be translated [2023-11-28 23:55:58,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:55:58 BoogieIcfgContainer [2023-11-28 23:55:58,165 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 23:55:58,166 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 23:55:58,166 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 23:55:58,166 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 23:55:58,167 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:55:34" (3/4) ... [2023-11-28 23:55:58,169 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-28 23:55:58,172 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure node_create [2023-11-28 23:55:58,178 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-28 23:55:58,178 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-28 23:55:58,179 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-28 23:55:58,179 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-28 23:55:58,288 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-28 23:55:58,289 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-28 23:55:58,289 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 23:55:58,290 INFO L158 Benchmark]: Toolchain (without parser) took 25061.51ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 109.7MB in the beginning and 137.3MB in the end (delta: -27.6MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2023-11-28 23:55:58,290 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 104.9MB. Free memory is still 52.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 23:55:58,290 INFO L158 Benchmark]: CACSL2BoogieTranslator took 438.15ms. Allocated memory is still 146.8MB. Free memory was 109.5MB in the beginning and 91.9MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-28 23:55:58,291 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.87ms. Allocated memory is still 146.8MB. Free memory was 91.9MB in the beginning and 89.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 23:55:58,291 INFO L158 Benchmark]: Boogie Preprocessor took 66.39ms. Allocated memory is still 146.8MB. Free memory was 89.9MB in the beginning and 87.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 23:55:58,292 INFO L158 Benchmark]: RCFGBuilder took 498.93ms. Allocated memory is still 146.8MB. Free memory was 86.6MB in the beginning and 108.3MB in the end (delta: -21.8MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2023-11-28 23:55:58,292 INFO L158 Benchmark]: TraceAbstraction took 23873.90ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 107.1MB in the beginning and 143.6MB in the end (delta: -36.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-28 23:55:58,293 INFO L158 Benchmark]: Witness Printer took 122.94ms. Allocated memory is still 211.8MB. Free memory was 142.5MB in the beginning and 137.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 23:55:58,295 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 104.9MB. Free memory is still 52.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 438.15ms. Allocated memory is still 146.8MB. Free memory was 109.5MB in the beginning and 91.9MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.87ms. Allocated memory is still 146.8MB. Free memory was 91.9MB in the beginning and 89.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.39ms. Allocated memory is still 146.8MB. Free memory was 89.9MB in the beginning and 87.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 498.93ms. Allocated memory is still 146.8MB. Free memory was 86.6MB in the beginning and 108.3MB in the end (delta: -21.8MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. * TraceAbstraction took 23873.90ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 107.1MB in the beginning and 143.6MB in the end (delta: -36.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 122.94ms. Allocated memory is still 211.8MB. Free memory was 142.5MB in the beginning and 137.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start_main_~ptr~0#1.base_27 : int, v_ULTIMATE.start_main_~ptr~0#1.offset_27 : int :: (((((#memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4]][#memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] + 4] == 0 && #memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] == ~ptr~0!offset) && !(#memory_$Pointer$#2.base[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] == v_ULTIMATE.start_main_~ptr~0#1.base_27)) && !(#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] == v_ULTIMATE.start_main_~ptr~0#1.base_27)) && !(#memory_$Pointer$#2.base[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] == #memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4])) && #memory_$Pointer$#2.base[#memory_$Pointer$#2.base[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4]][#memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] + 4] == 0) && #memory_$Pointer$#2.base[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] == ~ptr~0!base) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start_main_~ptr~0#1.base_27 : int, v_ULTIMATE.start_main_~ptr~0#1.offset_27 : int :: (((((#memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4]][#memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] + 4] == 0 && #memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] == ~ptr~0!offset) && ~ptr~0!base == #memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]) && !(#memory_$Pointer$#2.base[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] == v_ULTIMATE.start_main_~ptr~0#1.base_27)) && !(#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] == v_ULTIMATE.start_main_~ptr~0#1.base_27)) && !(#memory_$Pointer$#2.base[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] == #memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4])) && #memory_$Pointer$#2.base[#memory_$Pointer$#2.base[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4]][#memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4]][#memory_$Pointer$#2.offset[v_ULTIMATE.start_main_~ptr~0#1.base_27][v_ULTIMATE.start_main_~ptr~0#1.offset_27 + 4] + 4] + 4] == 0) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[#memory_$Pointer$#2.base[~head~0!base][~head~0!offset + 4]][#memory_$Pointer$#2.offset[~head~0!base][~head~0!offset + 4] + 4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[~head~0!base][~head~0!offset + 4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[~head~0!base][~head~0!offset + 4]][#memory_$Pointer$#2.offset[~head~0!base][~head~0!offset + 4] + 4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[~head~0!base] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[#memory_$Pointer$#2.base[~head~0!base][~head~0!offset + 4]] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[~head~0!base][~head~0!offset + 4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[~head~0!base] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[~head~0!base][~head~0!offset + 4] could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 585]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 585]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 622]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 622]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 624]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 624]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 23.8s, OverallIterations: 12, TraceHistogramMax: 12, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 180 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 179 mSDsluCounter, 893 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 719 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1068 IncrementalHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 174 mSDtfsCounter, 1068 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 649 GetRequests, 471 SyntacticMatches, 3 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 12.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=11, InterpolantAutomatonStates: 122, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 12 PreInvPairs, 22 NumberOfFragments, 727 HoareAnnotationTreeSize, 12 FomulaSimplifications, 90 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 14.4s InterpolantComputationTime, 724 NumberOfCodeBlocks, 720 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 798 ConstructedInterpolants, 5 QuantifiedInterpolants, 3686 SizeOfPredicates, 47 NumberOfNonLiveVariables, 3248 ConjunctsInSsa, 167 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 1016/1405 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((len == 2) && (2 == count)) || ((count == 1) && (len == 2))) || (((count <= 3) && (2 <= count)) && (len == 2))) - InvariantResult [Line: 585]: Loop Invariant Derived loop invariant: ((((len <= 0) && (len == 2)) || ((2 == len) && (len == 2))) || ((len == 1) && (len == 2))) RESULT: Ultimate proved your program to be correct! [2023-11-28 23:55:58,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6caf911-4a0e-4e85-a351-b21565e85451/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE