./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/list-simple/sll2n_append_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/list-simple/sll2n_append_unequal.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 742ffe63db70127807dbc7584eb0c51633a9ed1be5f19fa1a247e43392d52dab --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:51:24,140 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:51:24,195 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 18:51:24,199 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:51:24,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:51:24,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:51:24,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:51:24,224 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:51:24,225 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:51:24,225 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:51:24,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:51:24,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:51:24,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:51:24,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:51:24,227 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:51:24,228 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:51:24,228 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 18:51:24,228 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:51:24,229 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:51:24,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:51:24,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:51:24,230 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 18:51:24,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:51:24,231 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 18:51:24,231 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:51:24,231 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 18:51:24,231 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:51:24,232 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:51:24,232 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 18:51:24,232 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:51:24,233 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:51:24,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:51:24,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:51:24,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:51:24,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:51:24,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:51:24,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:51:24,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 18:51:24,235 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:51:24,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:51:24,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:51:24,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:51:24,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:51:24,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:51:24,237 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 742ffe63db70127807dbc7584eb0c51633a9ed1be5f19fa1a247e43392d52dab [2024-11-10 18:51:24,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:51:24,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:51:24,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:51:24,519 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:51:24,519 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:51:24,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/sll2n_append_unequal.i [2024-11-10 18:51:26,019 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:51:26,281 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:51:26,282 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_append_unequal.i [2024-11-10 18:51:26,300 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/968592a61/c0ea3f797ed3401c866b6fc91fc2031b/FLAGa1c665fd8 [2024-11-10 18:51:26,312 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/968592a61/c0ea3f797ed3401c866b6fc91fc2031b [2024-11-10 18:51:26,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:51:26,315 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:51:26,316 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:51:26,316 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:51:26,320 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:51:26,321 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:51:26" (1/1) ... [2024-11-10 18:51:26,322 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56519729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:51:26, skipping insertion in model container [2024-11-10 18:51:26,322 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:51:26" (1/1) ... [2024-11-10 18:51:26,364 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:51:26,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:51:26,655 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:51:26,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:51:26,753 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:51:26,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:51:26 WrapperNode [2024-11-10 18:51:26,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:51:26,755 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:51:26,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:51:26,755 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:51:26,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:51:26" (1/1) ... [2024-11-10 18:51:26,779 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:51:26" (1/1) ... [2024-11-10 18:51:26,830 INFO L138 Inliner]: procedures = 127, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 143 [2024-11-10 18:51:26,830 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:51:26,831 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:51:26,831 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:51:26,831 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:51:26,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:51:26" (1/1) ... [2024-11-10 18:51:26,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:51:26" (1/1) ... [2024-11-10 18:51:26,853 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:51:26" (1/1) ... [2024-11-10 18:51:26,870 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 6, 12]. 60 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]. [2024-11-10 18:51:26,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:51:26" (1/1) ... [2024-11-10 18:51:26,871 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:51:26" (1/1) ... [2024-11-10 18:51:26,886 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:51:26" (1/1) ... [2024-11-10 18:51:26,889 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:51:26" (1/1) ... [2024-11-10 18:51:26,894 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:51:26" (1/1) ... [2024-11-10 18:51:26,896 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:51:26" (1/1) ... [2024-11-10 18:51:26,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:51:26,903 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:51:26,903 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:51:26,903 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:51:26,903 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:51:26" (1/1) ... [2024-11-10 18:51:26,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:51:26,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:51:26,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 18:51:26,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 18:51:26,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 18:51:26,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 18:51:26,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 18:51:26,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 18:51:26,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 18:51:26,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 18:51:26,987 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2024-11-10 18:51:26,988 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2024-11-10 18:51:26,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 18:51:26,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:51:26,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 18:51:26,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 18:51:26,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 18:51:26,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-10 18:51:26,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 18:51:26,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 18:51:26,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-10 18:51:26,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 18:51:26,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-10 18:51:26,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-10 18:51:26,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-10 18:51:26,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:51:26,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 18:51:26,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 18:51:26,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:51:26,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:51:27,167 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:51:27,168 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:51:27,359 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L614: call ULTIMATE.dealloc(main_~#s~0#1.base, main_~#s~0#1.offset);havoc main_~#s~0#1.base, main_~#s~0#1.offset; [2024-11-10 18:51:27,381 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint myexit_returnLabel#1: assume true;havoc myexit_~s#1;havoc myexit_#in~s#1;assume { :end_inline_myexit } true; [2024-11-10 18:51:27,400 INFO L? ?]: Removed 58 outVars from TransFormulas that were not future-live. [2024-11-10 18:51:27,401 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:51:27,416 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:51:27,416 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:51:27,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:51:27 BoogieIcfgContainer [2024-11-10 18:51:27,417 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:51:27,419 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:51:27,420 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:51:27,422 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:51:27,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:51:26" (1/3) ... [2024-11-10 18:51:27,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48dcef83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:51:27, skipping insertion in model container [2024-11-10 18:51:27,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:51:26" (2/3) ... [2024-11-10 18:51:27,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48dcef83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:51:27, skipping insertion in model container [2024-11-10 18:51:27,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:51:27" (3/3) ... [2024-11-10 18:51:27,426 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_append_unequal.i [2024-11-10 18:51:27,442 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:51:27,442 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-10 18:51:27,492 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:51:27,497 INFO L333 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, 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;@53cdca7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:51:27,498 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-10 18:51:27,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 44 states have (on average 1.5227272727272727) internal successors, (67), 52 states have internal predecessors, (67), 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) [2024-11-10 18:51:27,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-10 18:51:27,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:27,508 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:27,508 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:27,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:27,513 INFO L85 PathProgramCache]: Analyzing trace with hash -466266247, now seen corresponding path program 1 times [2024-11-10 18:51:27,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:27,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004303959] [2024-11-10 18:51:27,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:27,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:27,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:51:27,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:27,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004303959] [2024-11-10 18:51:27,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004303959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:51:27,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:51:27,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 18:51:27,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131476568] [2024-11-10 18:51:27,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:51:27,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:51:27,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:27,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:51:27,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:51:27,951 INFO L87 Difference]: Start difference. First operand has 56 states, 44 states have (on average 1.5227272727272727) internal successors, (67), 52 states have internal predecessors, (67), 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 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-11-10 18:51:28,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:28,050 INFO L93 Difference]: Finished difference Result 109 states and 139 transitions. [2024-11-10 18:51:28,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:51:28,053 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), 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 12 [2024-11-10 18:51:28,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:28,060 INFO L225 Difference]: With dead ends: 109 [2024-11-10 18:51:28,061 INFO L226 Difference]: Without dead ends: 52 [2024-11-10 18:51:28,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:51:28,070 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 2 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:28,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 211 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 18:51:28,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-10 18:51:28,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2024-11-10 18:51:28,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 46 states have internal predecessors, (51), 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) [2024-11-10 18:51:28,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2024-11-10 18:51:28,114 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 12 [2024-11-10 18:51:28,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:28,116 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2024-11-10 18:51:28,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-11-10 18:51:28,116 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2024-11-10 18:51:28,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-10 18:51:28,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:28,117 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:28,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:51:28,118 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:28,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:28,119 INFO L85 PathProgramCache]: Analyzing trace with hash -862819568, now seen corresponding path program 1 times [2024-11-10 18:51:28,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:28,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583425024] [2024-11-10 18:51:28,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:28,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:28,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:28,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:51:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 18:51:28,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:28,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583425024] [2024-11-10 18:51:28,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583425024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:51:28,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:51:28,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 18:51:28,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954416092] [2024-11-10 18:51:28,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:51:28,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:51:28,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:28,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:51:28,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:51:28,345 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2024-11-10 18:51:28,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:28,427 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2024-11-10 18:51:28,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:51:28,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 24 [2024-11-10 18:51:28,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:28,428 INFO L225 Difference]: With dead ends: 51 [2024-11-10 18:51:28,428 INFO L226 Difference]: Without dead ends: 50 [2024-11-10 18:51:28,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:51:28,430 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 3 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:28,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 150 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 18:51:28,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-10 18:51:28,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-10 18:51:28,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 45 states have internal predecessors, (50), 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) [2024-11-10 18:51:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2024-11-10 18:51:28,437 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 24 [2024-11-10 18:51:28,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:28,437 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2024-11-10 18:51:28,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2024-11-10 18:51:28,437 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2024-11-10 18:51:28,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-10 18:51:28,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:28,438 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-10 18:51:28,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:51:28,439 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:28,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:28,439 INFO L85 PathProgramCache]: Analyzing trace with hash -977602793, now seen corresponding path program 1 times [2024-11-10 18:51:28,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:28,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532280257] [2024-11-10 18:51:28,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:28,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:28,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:28,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:51:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:28,676 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 18:51:28,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:28,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532280257] [2024-11-10 18:51:28,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532280257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:51:28,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760492687] [2024-11-10 18:51:28,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:28,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:28,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:51:28,680 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:51:28,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:51:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:28,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 18:51:28,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:51:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 18:51:28,909 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:51:28,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760492687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:51:28,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 18:51:28,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2024-11-10 18:51:28,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167008702] [2024-11-10 18:51:28,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:51:28,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:51:28,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:28,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:51:28,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-10 18:51:28,913 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2024-11-10 18:51:28,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:28,971 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2024-11-10 18:51:28,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:51:28,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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 25 [2024-11-10 18:51:28,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:28,975 INFO L225 Difference]: With dead ends: 51 [2024-11-10 18:51:28,975 INFO L226 Difference]: Without dead ends: 50 [2024-11-10 18:51:28,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-10 18:51:28,976 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 1 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:28,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 210 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 18:51:28,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-10 18:51:28,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2024-11-10 18:51:28,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 41 states have internal predecessors, (46), 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) [2024-11-10 18:51:28,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2024-11-10 18:51:28,987 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 25 [2024-11-10 18:51:28,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:28,989 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2024-11-10 18:51:28,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2024-11-10 18:51:28,990 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2024-11-10 18:51:28,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-10 18:51:28,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:28,990 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:29,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 18:51:29,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:29,192 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:29,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:29,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1584960659, now seen corresponding path program 1 times [2024-11-10 18:51:29,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:29,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326120117] [2024-11-10 18:51:29,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:29,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:29,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:29,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 18:51:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 18:51:29,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:29,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326120117] [2024-11-10 18:51:29,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326120117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:51:29,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833752024] [2024-11-10 18:51:29,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:29,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:29,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:51:29,352 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:51:29,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 18:51:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:29,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 18:51:29,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:51:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 18:51:29,549 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:51:29,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833752024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:51:29,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 18:51:29,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-11-10 18:51:29,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928425312] [2024-11-10 18:51:29,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:51:29,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:51:29,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:29,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:51:29,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:51:29,553 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2024-11-10 18:51:29,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:29,560 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-11-10 18:51:29,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:51:29,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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 29 [2024-11-10 18:51:29,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:29,564 INFO L225 Difference]: With dead ends: 45 [2024-11-10 18:51:29,564 INFO L226 Difference]: Without dead ends: 44 [2024-11-10 18:51:29,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:51:29,565 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 23 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:29,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 52 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 18:51:29,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-10 18:51:29,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-10 18:51:29,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 36 states have (on average 1.25) internal successors, (45), 40 states have internal predecessors, (45), 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) [2024-11-10 18:51:29,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2024-11-10 18:51:29,577 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 29 [2024-11-10 18:51:29,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:29,577 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2024-11-10 18:51:29,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2024-11-10 18:51:29,578 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2024-11-10 18:51:29,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-10 18:51:29,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:29,579 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:29,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 18:51:29,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-10 18:51:29,781 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:29,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:29,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1889140163, now seen corresponding path program 1 times [2024-11-10 18:51:29,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:29,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633562595] [2024-11-10 18:51:29,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:29,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:29,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:29,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 18:51:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 18:51:29,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:29,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633562595] [2024-11-10 18:51:29,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633562595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:51:29,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042477509] [2024-11-10 18:51:29,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:29,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:29,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:51:29,898 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:51:29,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 18:51:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:30,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 18:51:30,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:51:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 18:51:30,067 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:51:30,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042477509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:51:30,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 18:51:30,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-11-10 18:51:30,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165886001] [2024-11-10 18:51:30,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:51:30,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:51:30,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:30,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:51:30,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:51:30,069 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 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) [2024-11-10 18:51:30,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:30,079 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2024-11-10 18:51:30,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:51:30,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 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 30 [2024-11-10 18:51:30,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:30,081 INFO L225 Difference]: With dead ends: 44 [2024-11-10 18:51:30,081 INFO L226 Difference]: Without dead ends: 40 [2024-11-10 18:51:30,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:51:30,082 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 22 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:30,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 52 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 18:51:30,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-10 18:51:30,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-10 18:51:30,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 36 states have internal predecessors, (40), 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) [2024-11-10 18:51:30,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-11-10 18:51:30,091 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 30 [2024-11-10 18:51:30,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:30,093 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-11-10 18:51:30,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 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) [2024-11-10 18:51:30,093 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-11-10 18:51:30,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-10 18:51:30,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:30,094 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:30,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 18:51:30,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:30,295 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:30,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:30,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1307561379, now seen corresponding path program 1 times [2024-11-10 18:51:30,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:30,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000672573] [2024-11-10 18:51:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:30,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:30,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:30,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 18:51:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 18:51:30,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:30,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000672573] [2024-11-10 18:51:30,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000672573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:51:30,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703869233] [2024-11-10 18:51:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:30,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:30,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:51:30,446 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:51:30,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 18:51:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:30,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 18:51:30,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:51:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:51:30,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:51:30,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 18:51:30,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703869233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:51:30,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:51:30,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2024-11-10 18:51:30,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315972594] [2024-11-10 18:51:30,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:51:30,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 18:51:30,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:30,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 18:51:30,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 18:51:30,695 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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) [2024-11-10 18:51:30,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:30,757 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2024-11-10 18:51:30,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:51:30,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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 32 [2024-11-10 18:51:30,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:30,758 INFO L225 Difference]: With dead ends: 76 [2024-11-10 18:51:30,758 INFO L226 Difference]: Without dead ends: 47 [2024-11-10 18:51:30,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 18:51:30,760 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:30,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 193 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 18:51:30,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-10 18:51:30,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-10 18:51:30,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 42 states have internal predecessors, (46), 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) [2024-11-10 18:51:30,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2024-11-10 18:51:30,766 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 32 [2024-11-10 18:51:30,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:30,767 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2024-11-10 18:51:30,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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) [2024-11-10 18:51:30,767 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2024-11-10 18:51:30,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-10 18:51:30,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:30,768 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:30,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 18:51:30,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:30,973 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:30,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1839295372, now seen corresponding path program 2 times [2024-11-10 18:51:30,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:30,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955996902] [2024-11-10 18:51:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:30,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:31,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:31,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:51:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:31,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 18:51:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:31,106 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:31,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:31,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955996902] [2024-11-10 18:51:31,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955996902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:51:31,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:51:31,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 18:51:31,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597384262] [2024-11-10 18:51:31,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:51:31,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:51:31,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:31,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:51:31,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:51:31,109 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2024-11-10 18:51:31,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:31,156 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2024-11-10 18:51:31,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:51:31,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 44 [2024-11-10 18:51:31,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:31,158 INFO L225 Difference]: With dead ends: 57 [2024-11-10 18:51:31,158 INFO L226 Difference]: Without dead ends: 55 [2024-11-10 18:51:31,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:51:31,159 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 125 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 [2024-11-10 18:51:31,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 125 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 18:51:31,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-10 18:51:31,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2024-11-10 18:51:31,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 47 states have internal predecessors, (52), 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) [2024-11-10 18:51:31,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2024-11-10 18:51:31,166 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 44 [2024-11-10 18:51:31,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:31,168 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2024-11-10 18:51:31,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2024-11-10 18:51:31,169 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2024-11-10 18:51:31,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-10 18:51:31,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:31,170 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:31,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 18:51:31,170 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:31,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:31,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1183651034, now seen corresponding path program 1 times [2024-11-10 18:51:31,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:31,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059204443] [2024-11-10 18:51:31,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:31,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:31,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:31,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:51:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:31,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 18:51:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:31,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:31,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059204443] [2024-11-10 18:51:31,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059204443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:51:31,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:51:31,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 18:51:31,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617144015] [2024-11-10 18:51:31,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:51:31,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:51:31,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:31,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:51:31,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:51:31,279 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2024-11-10 18:51:31,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:31,316 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2024-11-10 18:51:31,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:51:31,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 45 [2024-11-10 18:51:31,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:31,317 INFO L225 Difference]: With dead ends: 58 [2024-11-10 18:51:31,317 INFO L226 Difference]: Without dead ends: 52 [2024-11-10 18:51:31,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:51:31,318 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 2 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:31,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 132 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 18:51:31,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-10 18:51:31,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-10 18:51:31,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 47 states have internal predecessors, (51), 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) [2024-11-10 18:51:31,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2024-11-10 18:51:31,323 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 45 [2024-11-10 18:51:31,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:31,324 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2024-11-10 18:51:31,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2024-11-10 18:51:31,324 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2024-11-10 18:51:31,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-10 18:51:31,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:31,325 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:31,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 18:51:31,325 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:31,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:31,326 INFO L85 PathProgramCache]: Analyzing trace with hash -251732212, now seen corresponding path program 1 times [2024-11-10 18:51:31,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:31,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772012397] [2024-11-10 18:51:31,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:31,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:31,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:31,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:51:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:31,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 18:51:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:31,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:31,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772012397] [2024-11-10 18:51:31,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772012397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:51:31,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238931560] [2024-11-10 18:51:31,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:31,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:31,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:51:31,478 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:51:31,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 18:51:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:31,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 18:51:31,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:51:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:31,704 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:51:31,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238931560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:51:31,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 18:51:31,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-10 18:51:31,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386483262] [2024-11-10 18:51:31,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:51:31,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:51:31,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:31,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:51:31,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:51:31,705 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-10 18:51:31,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:31,728 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2024-11-10 18:51:31,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:51:31,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 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 50 [2024-11-10 18:51:31,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:31,730 INFO L225 Difference]: With dead ends: 52 [2024-11-10 18:51:31,730 INFO L226 Difference]: Without dead ends: 51 [2024-11-10 18:51:31,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:51:31,732 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 5 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:31,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 131 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 18:51:31,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-10 18:51:31,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-10 18:51:31,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 46 states have internal predecessors, (50), 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) [2024-11-10 18:51:31,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2024-11-10 18:51:31,740 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 50 [2024-11-10 18:51:31,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:31,741 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2024-11-10 18:51:31,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-10 18:51:31,741 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2024-11-10 18:51:31,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-10 18:51:31,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:31,742 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:31,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 18:51:31,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:31,943 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:31,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:31,944 INFO L85 PathProgramCache]: Analyzing trace with hash 786236026, now seen corresponding path program 1 times [2024-11-10 18:51:31,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:31,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517372858] [2024-11-10 18:51:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:31,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:32,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:32,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:51:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:32,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 18:51:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:32,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:32,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517372858] [2024-11-10 18:51:32,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517372858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:51:32,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658403052] [2024-11-10 18:51:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:32,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:32,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:51:32,076 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:51:32,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 18:51:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:32,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 18:51:32,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:51:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:32,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:51:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:32,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658403052] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:51:32,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:51:32,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-10 18:51:32,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701791753] [2024-11-10 18:51:32,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:51:32,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 18:51:32,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:32,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 18:51:32,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-10 18:51:32,377 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 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) [2024-11-10 18:51:32,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:32,441 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2024-11-10 18:51:32,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 18:51:32,441 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 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 51 [2024-11-10 18:51:32,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:32,443 INFO L225 Difference]: With dead ends: 76 [2024-11-10 18:51:32,443 INFO L226 Difference]: Without dead ends: 75 [2024-11-10 18:51:32,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-10 18:51:32,444 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 10 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:32,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 227 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 18:51:32,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-10 18:51:32,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2024-11-10 18:51:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 64 states have internal predecessors, (71), 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) [2024-11-10 18:51:32,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2024-11-10 18:51:32,450 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 51 [2024-11-10 18:51:32,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:32,454 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2024-11-10 18:51:32,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 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) [2024-11-10 18:51:32,454 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2024-11-10 18:51:32,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-10 18:51:32,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:32,455 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:32,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 18:51:32,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:32,656 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:32,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:32,657 INFO L85 PathProgramCache]: Analyzing trace with hash 786166670, now seen corresponding path program 1 times [2024-11-10 18:51:32,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:32,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135698406] [2024-11-10 18:51:32,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:32,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:32,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:32,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:51:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:32,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 18:51:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:32,790 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:32,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:32,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135698406] [2024-11-10 18:51:32,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135698406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:51:32,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152877704] [2024-11-10 18:51:32,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:32,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:32,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:51:32,793 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:51:32,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 18:51:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:32,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 18:51:32,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:51:33,014 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:33,014 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:51:33,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152877704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:51:33,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 18:51:33,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-10 18:51:33,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502046020] [2024-11-10 18:51:33,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:51:33,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:51:33,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:33,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:51:33,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:51:33,016 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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) [2024-11-10 18:51:33,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:33,042 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2024-11-10 18:51:33,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:51:33,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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 51 [2024-11-10 18:51:33,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:33,043 INFO L225 Difference]: With dead ends: 69 [2024-11-10 18:51:33,043 INFO L226 Difference]: Without dead ends: 68 [2024-11-10 18:51:33,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:51:33,044 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 3 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:33,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 119 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 18:51:33,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-10 18:51:33,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-10 18:51:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 62 states have (on average 1.1290322580645162) internal successors, (70), 63 states have internal predecessors, (70), 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) [2024-11-10 18:51:33,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2024-11-10 18:51:33,050 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 51 [2024-11-10 18:51:33,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:33,050 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2024-11-10 18:51:33,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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) [2024-11-10 18:51:33,050 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2024-11-10 18:51:33,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-10 18:51:33,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:33,051 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:33,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 18:51:33,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:33,253 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:33,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:33,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1398637011, now seen corresponding path program 1 times [2024-11-10 18:51:33,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:33,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385166047] [2024-11-10 18:51:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:33,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:33,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:33,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:51:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:33,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 18:51:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:33,378 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:33,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:33,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385166047] [2024-11-10 18:51:33,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385166047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:51:33,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066924660] [2024-11-10 18:51:33,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:33,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:33,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:51:33,380 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:51:33,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 18:51:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:33,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 18:51:33,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:51:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:33,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:51:33,678 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:33,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066924660] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:51:33,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:51:33,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-10 18:51:33,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084296092] [2024-11-10 18:51:33,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:51:33,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 18:51:33,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:33,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 18:51:33,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-10 18:51:33,680 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 13 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 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) [2024-11-10 18:51:33,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:33,748 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2024-11-10 18:51:33,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 18:51:33,748 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 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 52 [2024-11-10 18:51:33,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:33,749 INFO L225 Difference]: With dead ends: 77 [2024-11-10 18:51:33,749 INFO L226 Difference]: Without dead ends: 68 [2024-11-10 18:51:33,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-10 18:51:33,750 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:33,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 275 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 18:51:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-10 18:51:33,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-10 18:51:33,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 62 states have (on average 1.096774193548387) internal successors, (68), 63 states have internal predecessors, (68), 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) [2024-11-10 18:51:33,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2024-11-10 18:51:33,759 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 52 [2024-11-10 18:51:33,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:33,759 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2024-11-10 18:51:33,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 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) [2024-11-10 18:51:33,759 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2024-11-10 18:51:33,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-10 18:51:33,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:33,760 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:33,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 18:51:33,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-10 18:51:33,961 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:33,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:33,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1234735453, now seen corresponding path program 2 times [2024-11-10 18:51:33,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:33,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716203052] [2024-11-10 18:51:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:33,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:34,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:34,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:51:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:34,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 18:51:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:34,553 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-10 18:51:34,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:34,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716203052] [2024-11-10 18:51:34,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716203052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:51:34,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:51:34,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-10 18:51:34,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823298061] [2024-11-10 18:51:34,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:51:34,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 18:51:34,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:34,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 18:51:34,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-10 18:51:34,555 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 18:51:34,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:34,725 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2024-11-10 18:51:34,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 18:51:34,726 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2024-11-10 18:51:34,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:34,726 INFO L225 Difference]: With dead ends: 105 [2024-11-10 18:51:34,726 INFO L226 Difference]: Without dead ends: 68 [2024-11-10 18:51:34,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-11-10 18:51:34,727 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 31 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:34,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 256 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 18:51:34,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-10 18:51:34,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-10 18:51:34,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 63 states have internal predecessors, (67), 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) [2024-11-10 18:51:34,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2024-11-10 18:51:34,733 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 64 [2024-11-10 18:51:34,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:34,733 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2024-11-10 18:51:34,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 18:51:34,733 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2024-11-10 18:51:34,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-10 18:51:34,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:34,734 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:34,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 18:51:34,734 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:34,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:34,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1077667145, now seen corresponding path program 1 times [2024-11-10 18:51:34,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:34,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744961417] [2024-11-10 18:51:34,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:34,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:34,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:34,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:51:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:34,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 18:51:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:34,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:34,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744961417] [2024-11-10 18:51:34,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744961417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:51:34,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391441504] [2024-11-10 18:51:34,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:34,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:34,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:51:34,963 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:51:34,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 18:51:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:35,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 18:51:35,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:51:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:35,243 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:51:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:35,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391441504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:51:35,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:51:35,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2024-11-10 18:51:35,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908603641] [2024-11-10 18:51:35,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:51:35,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 18:51:35,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:35,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 18:51:35,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2024-11-10 18:51:35,387 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 21 states, 20 states have (on average 4.05) internal successors, (81), 20 states have internal predecessors, (81), 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) [2024-11-10 18:51:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:35,475 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2024-11-10 18:51:35,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 18:51:35,475 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.05) internal successors, (81), 20 states have internal predecessors, (81), 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 67 [2024-11-10 18:51:35,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:35,476 INFO L225 Difference]: With dead ends: 98 [2024-11-10 18:51:35,476 INFO L226 Difference]: Without dead ends: 84 [2024-11-10 18:51:35,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2024-11-10 18:51:35,477 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:35,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 255 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 18:51:35,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-10 18:51:35,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2024-11-10 18:51:35,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 77 states have (on average 1.051948051948052) internal successors, (81), 78 states have internal predecessors, (81), 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) [2024-11-10 18:51:35,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2024-11-10 18:51:35,486 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 67 [2024-11-10 18:51:35,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:35,487 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2024-11-10 18:51:35,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.05) internal successors, (81), 20 states have internal predecessors, (81), 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) [2024-11-10 18:51:35,487 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2024-11-10 18:51:35,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-10 18:51:35,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:35,489 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:35,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 18:51:35,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-10 18:51:35,689 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:35,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:35,690 INFO L85 PathProgramCache]: Analyzing trace with hash -82030488, now seen corresponding path program 1 times [2024-11-10 18:51:35,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:35,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595594650] [2024-11-10 18:51:35,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:35,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:35,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:36,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:51:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:36,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 18:51:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:36,011 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:36,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:36,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595594650] [2024-11-10 18:51:36,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595594650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:51:36,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678376782] [2024-11-10 18:51:36,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:36,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:36,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:51:36,015 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:51:36,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 18:51:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:36,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-10 18:51:36,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:51:36,309 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:36,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:51:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:36,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678376782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:51:36,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:51:36,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2024-11-10 18:51:36,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804791680] [2024-11-10 18:51:36,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:51:36,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-10 18:51:36,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:36,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-10 18:51:36,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2024-11-10 18:51:36,610 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 33 states, 32 states have (on average 3.59375) internal successors, (115), 32 states have internal predecessors, (115), 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) [2024-11-10 18:51:36,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:36,722 INFO L93 Difference]: Finished difference Result 143 states and 161 transitions. [2024-11-10 18:51:36,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-10 18:51:36,723 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 3.59375) internal successors, (115), 32 states have internal predecessors, (115), 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 84 [2024-11-10 18:51:36,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:36,724 INFO L225 Difference]: With dead ends: 143 [2024-11-10 18:51:36,724 INFO L226 Difference]: Without dead ends: 142 [2024-11-10 18:51:36,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2024-11-10 18:51:36,726 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 36 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:36,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 187 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 18:51:36,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-10 18:51:36,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 128. [2024-11-10 18:51:36,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 122 states have (on average 1.0901639344262295) internal successors, (133), 123 states have internal predecessors, (133), 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) [2024-11-10 18:51:36,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2024-11-10 18:51:36,732 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 84 [2024-11-10 18:51:36,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:36,732 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2024-11-10 18:51:36,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 3.59375) internal successors, (115), 32 states have internal predecessors, (115), 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) [2024-11-10 18:51:36,733 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2024-11-10 18:51:36,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-10 18:51:36,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:36,733 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:36,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 18:51:36,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 18:51:36,938 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:36,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:36,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1219656471, now seen corresponding path program 2 times [2024-11-10 18:51:36,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:36,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033640660] [2024-11-10 18:51:36,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:36,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:37,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:37,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:51:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:37,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 18:51:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:37,313 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:37,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:37,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033640660] [2024-11-10 18:51:37,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033640660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:51:37,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654917878] [2024-11-10 18:51:37,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:51:37,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:37,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:51:37,316 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:51:37,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 18:51:37,562 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:51:37,562 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:51:37,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-10 18:51:37,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:51:37,659 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:37,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:51:38,035 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:38,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654917878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:51:38,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:51:38,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 36 [2024-11-10 18:51:38,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526116180] [2024-11-10 18:51:38,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:51:38,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-10 18:51:38,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:38,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-10 18:51:38,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2024-11-10 18:51:38,040 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand has 37 states, 36 states have (on average 3.5833333333333335) internal successors, (129), 36 states have internal predecessors, (129), 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) [2024-11-10 18:51:38,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:38,179 INFO L93 Difference]: Finished difference Result 153 states and 164 transitions. [2024-11-10 18:51:38,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-10 18:51:38,179 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.5833333333333335) internal successors, (129), 36 states have internal predecessors, (129), 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 91 [2024-11-10 18:51:38,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:38,180 INFO L225 Difference]: With dead ends: 153 [2024-11-10 18:51:38,181 INFO L226 Difference]: Without dead ends: 132 [2024-11-10 18:51:38,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2024-11-10 18:51:38,182 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 38 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:38,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 337 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 18:51:38,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-10 18:51:38,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2024-11-10 18:51:38,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 125 states have (on average 1.032) internal successors, (129), 126 states have internal predecessors, (129), 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) [2024-11-10 18:51:38,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2024-11-10 18:51:38,190 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 91 [2024-11-10 18:51:38,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:38,190 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2024-11-10 18:51:38,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.5833333333333335) internal successors, (129), 36 states have internal predecessors, (129), 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) [2024-11-10 18:51:38,191 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2024-11-10 18:51:38,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-10 18:51:38,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:38,192 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:38,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-10 18:51:38,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-10 18:51:38,393 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:38,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:38,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1407170648, now seen corresponding path program 2 times [2024-11-10 18:51:38,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:38,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559929872] [2024-11-10 18:51:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:38,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:39,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:39,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:51:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:39,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 18:51:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:39,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:39,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559929872] [2024-11-10 18:51:39,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559929872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:51:39,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791480485] [2024-11-10 18:51:39,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:51:39,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:39,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:51:39,221 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:51:39,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 18:51:39,486 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:51:39,486 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:51:39,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-10 18:51:39,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:51:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:39,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:51:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:40,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791480485] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:51:40,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:51:40,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 64 [2024-11-10 18:51:40,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323048142] [2024-11-10 18:51:40,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:51:40,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-10 18:51:40,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:40,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-10 18:51:40,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1057, Invalid=3103, Unknown=0, NotChecked=0, Total=4160 [2024-11-10 18:51:40,517 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 65 states, 64 states have (on average 3.296875) internal successors, (211), 64 states have internal predecessors, (211), 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) [2024-11-10 18:51:40,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:40,698 INFO L93 Difference]: Finished difference Result 255 states and 289 transitions. [2024-11-10 18:51:40,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-10 18:51:40,699 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 3.296875) internal successors, (211), 64 states have internal predecessors, (211), 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 132 [2024-11-10 18:51:40,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:40,700 INFO L225 Difference]: With dead ends: 255 [2024-11-10 18:51:40,700 INFO L226 Difference]: Without dead ends: 254 [2024-11-10 18:51:40,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1267 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1057, Invalid=3103, Unknown=0, NotChecked=0, Total=4160 [2024-11-10 18:51:40,702 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 78 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:40,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 386 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 18:51:40,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-10 18:51:40,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 224. [2024-11-10 18:51:40,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 218 states have (on average 1.0871559633027523) internal successors, (237), 219 states have internal predecessors, (237), 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) [2024-11-10 18:51:40,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 243 transitions. [2024-11-10 18:51:40,711 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 243 transitions. Word has length 132 [2024-11-10 18:51:40,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:40,711 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 243 transitions. [2024-11-10 18:51:40,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 3.296875) internal successors, (211), 64 states have internal predecessors, (211), 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) [2024-11-10 18:51:40,712 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 243 transitions. [2024-11-10 18:51:40,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-10 18:51:40,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:40,713 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:40,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 18:51:40,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-10 18:51:40,914 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:40,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:40,914 INFO L85 PathProgramCache]: Analyzing trace with hash 954588119, now seen corresponding path program 3 times [2024-11-10 18:51:40,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:40,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830955454] [2024-11-10 18:51:40,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:40,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:41,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:41,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:51:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:41,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 18:51:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 18:51:41,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:41,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830955454] [2024-11-10 18:51:41,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830955454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:51:41,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133169387] [2024-11-10 18:51:41,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 18:51:41,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:41,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:51:41,751 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:51:41,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 18:51:42,044 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 18:51:42,045 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:51:42,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-10 18:51:42,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:51:42,224 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 [2024-11-10 18:51:42,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 18:51:42,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 3 [2024-11-10 18:51:42,548 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 12 treesize of output 4 [2024-11-10 18:51:42,690 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_sll_append_~head#1.base_BEFORE_CALL_1| Int)) (= (select (select |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_sll_append_~head#1.base_BEFORE_CALL_1|) 0) 0)) (exists ((|v_node_create_~temp~0#1.base_67| Int)) (and (= |c_#memory_$Pointer$#2.base| (store |c_old(#memory_$Pointer$#2.base)| |v_node_create_~temp~0#1.base_67| (select |c_#memory_$Pointer$#2.base| |v_node_create_~temp~0#1.base_67|))) (= (select |c_old(#valid)| |v_node_create_~temp~0#1.base_67|) 0)))) is different from true [2024-11-10 18:51:42,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 18:51:42,733 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 21 treesize of output 16 [2024-11-10 18:51:42,750 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-10 18:51:42,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-10 18:51:42,926 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 24 treesize of output 8 [2024-11-10 18:51:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 661 trivial. 4 not checked. [2024-11-10 18:51:42,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:51:43,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133169387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:51:43,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:51:43,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 19] total 52 [2024-11-10 18:51:43,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109162469] [2024-11-10 18:51:43,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 18:51:43,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-10 18:51:43,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:43,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-10 18:51:43,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=2622, Unknown=2, NotChecked=106, Total=3080 [2024-11-10 18:51:43,206 INFO L87 Difference]: Start difference. First operand 224 states and 243 transitions. Second operand has 52 states, 51 states have (on average 3.235294117647059) internal successors, (165), 48 states have internal predecessors, (165), 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) [2024-11-10 18:51:44,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:44,691 INFO L93 Difference]: Finished difference Result 430 states and 465 transitions. [2024-11-10 18:51:44,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-10 18:51:44,692 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 3.235294117647059) internal successors, (165), 48 states have internal predecessors, (165), 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 139 [2024-11-10 18:51:44,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:44,694 INFO L225 Difference]: With dead ends: 430 [2024-11-10 18:51:44,694 INFO L226 Difference]: Without dead ends: 232 [2024-11-10 18:51:44,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1772 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=969, Invalid=7963, Unknown=2, NotChecked=186, Total=9120 [2024-11-10 18:51:44,698 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 120 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:44,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 631 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 610 Invalid, 0 Unknown, 152 Unchecked, 0.4s Time] [2024-11-10 18:51:44,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-10 18:51:44,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 231. [2024-11-10 18:51:44,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 224 states have (on average 1.0803571428571428) internal successors, (242), 225 states have internal predecessors, (242), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-10 18:51:44,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 248 transitions. [2024-11-10 18:51:44,713 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 248 transitions. Word has length 139 [2024-11-10 18:51:44,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:44,714 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 248 transitions. [2024-11-10 18:51:44,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 3.235294117647059) internal successors, (165), 48 states have internal predecessors, (165), 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) [2024-11-10 18:51:44,714 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 248 transitions. [2024-11-10 18:51:44,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-10 18:51:44,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:44,716 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:44,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-10 18:51:44,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-10 18:51:44,916 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:44,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:44,917 INFO L85 PathProgramCache]: Analyzing trace with hash -248312048, now seen corresponding path program 1 times [2024-11-10 18:51:44,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:44,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175698236] [2024-11-10 18:51:44,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:44,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:45,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:45,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:51:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:45,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 18:51:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:45,796 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-10 18:51:45,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:45,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175698236] [2024-11-10 18:51:45,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175698236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:51:45,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12232511] [2024-11-10 18:51:45,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:45,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:45,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:51:45,799 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:51:45,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 18:51:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:46,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-10 18:51:46,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:51:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-10 18:51:46,243 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:51:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-10 18:51:47,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12232511] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:51:47,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:51:47,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 72 [2024-11-10 18:51:47,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017385106] [2024-11-10 18:51:47,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:51:47,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-10 18:51:47,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:47,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-10 18:51:47,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1267, Invalid=3989, Unknown=0, NotChecked=0, Total=5256 [2024-11-10 18:51:47,396 INFO L87 Difference]: Start difference. First operand 231 states and 248 transitions. Second operand has 73 states, 72 states have (on average 3.3055555555555554) internal successors, (238), 72 states have internal predecessors, (238), 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) [2024-11-10 18:51:47,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:47,611 INFO L93 Difference]: Finished difference Result 287 states and 307 transitions. [2024-11-10 18:51:47,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-10 18:51:47,612 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 3.3055555555555554) internal successors, (238), 72 states have internal predecessors, (238), 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 147 [2024-11-10 18:51:47,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:47,613 INFO L225 Difference]: With dead ends: 287 [2024-11-10 18:51:47,613 INFO L226 Difference]: Without dead ends: 247 [2024-11-10 18:51:47,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1267, Invalid=3989, Unknown=0, NotChecked=0, Total=5256 [2024-11-10 18:51:47,615 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 90 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:47,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 331 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 18:51:47,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-10 18:51:47,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 246. [2024-11-10 18:51:47,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 239 states have (on average 1.0167364016736402) internal successors, (243), 240 states have internal predecessors, (243), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-10 18:51:47,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 249 transitions. [2024-11-10 18:51:47,625 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 249 transitions. Word has length 147 [2024-11-10 18:51:47,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:47,626 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 249 transitions. [2024-11-10 18:51:47,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 3.3055555555555554) internal successors, (238), 72 states have internal predecessors, (238), 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) [2024-11-10 18:51:47,627 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 249 transitions. [2024-11-10 18:51:47,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-10 18:51:47,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:47,628 INFO L215 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:47,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-10 18:51:47,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:47,829 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:47,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:47,829 INFO L85 PathProgramCache]: Analyzing trace with hash 2128397239, now seen corresponding path program 1 times [2024-11-10 18:51:47,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:47,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176666121] [2024-11-10 18:51:47,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:47,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:50,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:50,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:51:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:50,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 18:51:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:50,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-10 18:51:50,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:50,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176666121] [2024-11-10 18:51:50,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176666121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:51:50,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527415279] [2024-11-10 18:51:50,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:50,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:50,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:51:50,375 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:51:50,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 18:51:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:50,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-10 18:51:50,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:51:51,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-10 18:51:51,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:51:54,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-10 18:51:54,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527415279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:51:54,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:51:54,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67, 67] total 136 [2024-11-10 18:51:54,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748077740] [2024-11-10 18:51:54,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:51:54,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2024-11-10 18:51:54,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:51:54,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2024-11-10 18:51:54,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4693, Invalid=13939, Unknown=0, NotChecked=0, Total=18632 [2024-11-10 18:51:54,427 INFO L87 Difference]: Start difference. First operand 246 states and 249 transitions. Second operand has 137 states, 136 states have (on average 3.1470588235294117) internal successors, (428), 136 states have internal predecessors, (428), 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) [2024-11-10 18:51:54,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:51:54,875 INFO L93 Difference]: Finished difference Result 514 states and 583 transitions. [2024-11-10 18:51:54,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-11-10 18:51:54,876 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 136 states have (on average 3.1470588235294117) internal successors, (428), 136 states have internal predecessors, (428), 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 242 [2024-11-10 18:51:54,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:51:54,878 INFO L225 Difference]: With dead ends: 514 [2024-11-10 18:51:54,878 INFO L226 Difference]: Without dead ends: 513 [2024-11-10 18:51:54,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5767 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4693, Invalid=13939, Unknown=0, NotChecked=0, Total=18632 [2024-11-10 18:51:54,883 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 172 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 18:51:54,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 568 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 18:51:54,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-10 18:51:54,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 447. [2024-11-10 18:51:54,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 440 states have (on average 1.084090909090909) internal successors, (477), 441 states have internal predecessors, (477), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-10 18:51:54,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 483 transitions. [2024-11-10 18:51:54,900 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 483 transitions. Word has length 242 [2024-11-10 18:51:54,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:51:54,900 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 483 transitions. [2024-11-10 18:51:54,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 136 states have (on average 3.1470588235294117) internal successors, (428), 136 states have internal predecessors, (428), 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) [2024-11-10 18:51:54,901 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 483 transitions. [2024-11-10 18:51:54,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-10 18:51:54,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:51:54,902 INFO L215 NwaCegarLoop]: trace histogram [34, 33, 33, 33, 33, 33, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:51:54,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-10 18:51:55,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:55,107 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:51:55,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:51:55,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1117225192, now seen corresponding path program 2 times [2024-11-10 18:51:55,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:51:55,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114225663] [2024-11-10 18:51:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:51:55,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:51:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:57,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:51:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:57,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:51:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:57,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 18:51:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:51:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3262 backedges. 0 proven. 3234 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-10 18:51:57,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:51:57,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114225663] [2024-11-10 18:51:57,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114225663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:51:57,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057995224] [2024-11-10 18:51:57,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:51:57,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:51:57,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:51:57,548 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:51:57,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-10 18:51:57,937 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:51:57,938 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:51:57,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-10 18:51:57,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:51:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3262 backedges. 0 proven. 3234 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-10 18:51:58,200 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:52:01,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3262 backedges. 0 proven. 3234 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-10 18:52:01,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057995224] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:52:01,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:52:01,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69, 69] total 140 [2024-11-10 18:52:01,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557460508] [2024-11-10 18:52:01,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:52:01,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2024-11-10 18:52:01,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:52:01,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2024-11-10 18:52:01,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4837, Invalid=14903, Unknown=0, NotChecked=0, Total=19740 [2024-11-10 18:52:01,581 INFO L87 Difference]: Start difference. First operand 447 states and 483 transitions. Second operand has 141 states, 140 states have (on average 3.157142857142857) internal successors, (442), 140 states have internal predecessors, (442), 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) [2024-11-10 18:52:01,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:52:01,942 INFO L93 Difference]: Finished difference Result 524 states and 560 transitions. [2024-11-10 18:52:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2024-11-10 18:52:01,943 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 140 states have (on average 3.157142857142857) internal successors, (442), 140 states have internal predecessors, (442), 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 249 [2024-11-10 18:52:01,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:52:01,944 INFO L225 Difference]: With dead ends: 524 [2024-11-10 18:52:01,944 INFO L226 Difference]: Without dead ends: 451 [2024-11-10 18:52:01,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6138 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4837, Invalid=14903, Unknown=0, NotChecked=0, Total=19740 [2024-11-10 18:52:01,946 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 238 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 18:52:01,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 485 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 18:52:01,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2024-11-10 18:52:01,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 450. [2024-11-10 18:52:01,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 443 states have (on average 1.0090293453724606) internal successors, (447), 444 states have internal predecessors, (447), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-10 18:52:01,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 453 transitions. [2024-11-10 18:52:01,961 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 453 transitions. Word has length 249 [2024-11-10 18:52:01,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:52:01,962 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 453 transitions. [2024-11-10 18:52:01,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 140 states have (on average 3.157142857142857) internal successors, (442), 140 states have internal predecessors, (442), 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) [2024-11-10 18:52:01,962 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 453 transitions. [2024-11-10 18:52:01,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2024-11-10 18:52:01,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:52:01,965 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 67, 66, 66, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:52:01,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-10 18:52:02,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:52:02,165 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:52:02,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:52:02,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1380715527, now seen corresponding path program 2 times [2024-11-10 18:52:02,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:52:02,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486649665] [2024-11-10 18:52:02,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:52:02,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:52:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:52:10,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:52:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:52:10,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:52:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:52:10,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 18:52:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:52:10,794 INFO L134 CoverageAnalysis]: Checked inductivity of 13228 backedges. 0 proven. 13200 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-10 18:52:10,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:52:10,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486649665] [2024-11-10 18:52:10,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486649665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:52:10,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45571044] [2024-11-10 18:52:10,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:52:10,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:52:10,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:52:10,796 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:52:10,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-10 18:52:11,239 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:52:11,239 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:52:11,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 1877 conjuncts, 135 conjuncts are in the unsatisfiable core [2024-11-10 18:52:11,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:52:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 13228 backedges. 0 proven. 13200 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-10 18:52:11,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:52:24,276 INFO L134 CoverageAnalysis]: Checked inductivity of 13228 backedges. 0 proven. 13200 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-10 18:52:24,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45571044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:52:24,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:52:24,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 135, 135] total 272 [2024-11-10 18:52:24,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541307465] [2024-11-10 18:52:24,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:52:24,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 273 states [2024-11-10 18:52:24,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:52:24,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 273 interpolants. [2024-11-10 18:52:24,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18633, Invalid=55623, Unknown=0, NotChecked=0, Total=74256 [2024-11-10 18:52:24,291 INFO L87 Difference]: Start difference. First operand 450 states and 453 transitions. Second operand has 273 states, 272 states have (on average 3.073529411764706) internal successors, (836), 272 states have internal predecessors, (836), 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) [2024-11-10 18:52:25,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 18:52:25,745 INFO L93 Difference]: Finished difference Result 990 states and 1127 transitions. [2024-11-10 18:52:25,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 271 states. [2024-11-10 18:52:25,746 INFO L78 Accepts]: Start accepts. Automaton has has 273 states, 272 states have (on average 3.073529411764706) internal successors, (836), 272 states have internal predecessors, (836), 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 446 [2024-11-10 18:52:25,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 18:52:25,749 INFO L225 Difference]: With dead ends: 990 [2024-11-10 18:52:25,749 INFO L226 Difference]: Without dead ends: 989 [2024-11-10 18:52:25,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1031 GetRequests, 760 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23107 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=18633, Invalid=55623, Unknown=0, NotChecked=0, Total=74256 [2024-11-10 18:52:25,755 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 632 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 18:52:25,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 665 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 18:52:25,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2024-11-10 18:52:25,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 855. [2024-11-10 18:52:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 848 states have (on average 1.0837264150943395) internal successors, (919), 849 states have internal predecessors, (919), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-10 18:52:25,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 925 transitions. [2024-11-10 18:52:25,785 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 925 transitions. Word has length 446 [2024-11-10 18:52:25,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 18:52:25,785 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 925 transitions. [2024-11-10 18:52:25,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 273 states, 272 states have (on average 3.073529411764706) internal successors, (836), 272 states have internal predecessors, (836), 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) [2024-11-10 18:52:25,786 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 925 transitions. [2024-11-10 18:52:25,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-10 18:52:25,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 18:52:25,789 INFO L215 NwaCegarLoop]: trace histogram [68, 67, 67, 67, 67, 67, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:52:25,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-10 18:52:25,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:52:25,990 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-10 18:52:25,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:52:25,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1329938072, now seen corresponding path program 3 times [2024-11-10 18:52:25,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:52:25,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671085650] [2024-11-10 18:52:25,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:52:25,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:52:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:52:34,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 18:52:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:52:34,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-10 18:52:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:52:34,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 18:52:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:52:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 13428 backedges. 0 proven. 13400 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-10 18:52:34,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:52:34,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671085650] [2024-11-10 18:52:34,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671085650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:52:34,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972866898] [2024-11-10 18:52:34,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 18:52:34,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:52:34,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:52:34,427 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:52:34,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-10 18:52:35,277 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-10 18:52:35,278 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:52:35,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 135 conjuncts are in the unsatisfiable core [2024-11-10 18:52:35,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:52:35,372 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 [2024-11-10 18:52:35,835 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-10 18:52:35,836 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 [2024-11-10 18:52:35,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 18:52:35,942 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 11 treesize of output 7 [2024-11-10 18:52:36,298 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 30 treesize of output 14 [2024-11-10 18:52:36,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 11 treesize of output 3 [2024-11-10 18:52:36,307 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 [2024-11-10 18:52:36,660 INFO L349 Elim1Store]: treesize reduction 75, result has 23.5 percent of original size [2024-11-10 18:52:36,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 32 treesize of output 36 [2024-11-10 18:52:36,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 18:52:36,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2024-11-10 18:52:36,713 INFO L349 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2024-11-10 18:52:36,713 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 28 treesize of output 30 [2024-11-10 18:52:37,573 INFO L349 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2024-11-10 18:52:37,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 205 treesize of output 112 [2024-11-10 18:52:37,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 18:52:37,592 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 84 treesize of output 51 [2024-11-10 18:52:37,732 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 129 treesize of output 89 [2024-11-10 18:52:38,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 18:52:38,658 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-10 18:52:38,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 38 [2024-11-10 18:52:38,792 INFO L134 CoverageAnalysis]: Checked inductivity of 13428 backedges. 928 proven. 20 refuted. 0 times theorem prover too weak. 12480 trivial. 0 not checked. [2024-11-10 18:52:38,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:52:41,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972866898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:52:41,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:52:41,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 28] total 165 [2024-11-10 18:52:41,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321972555] [2024-11-10 18:52:41,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 18:52:41,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 165 states [2024-11-10 18:52:41,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:52:41,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2024-11-10 18:52:41,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4870, Invalid=26282, Unknown=0, NotChecked=0, Total=31152 [2024-11-10 18:52:41,127 INFO L87 Difference]: Start difference. First operand 855 states and 925 transitions. Second operand has 165 states, 164 states have (on average 3.0121951219512195) internal successors, (494), 159 states have internal predecessors, (494), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5)