./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/uthash-2.0.2/uthash_FNV_nondet_test4-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 13:54:23,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 13:54:23,299 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 13:54:23,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 13:54:23,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 13:54:23,334 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 13:54:23,336 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 13:54:23,336 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 13:54:23,337 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 13:54:23,338 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 13:54:23,339 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 13:54:23,340 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 13:54:23,340 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 13:54:23,340 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 13:54:23,342 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 13:54:23,343 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 13:54:23,343 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 13:54:23,343 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 13:54:23,343 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 13:54:23,344 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 13:54:23,344 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 13:54:23,344 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 13:54:23,345 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 13:54:23,345 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 13:54:23,345 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 13:54:23,345 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 13:54:23,346 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 13:54:23,346 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 13:54:23,346 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 13:54:23,347 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 13:54:23,347 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 13:54:23,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 13:54:23,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 13:54:23,348 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 13:54:23,348 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 13:54:23,348 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 13:54:23,349 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 13:54:23,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 13:54:23,349 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 13:54:23,349 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 13:54:23,350 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 13:54:23,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 13:54:23,353 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f [2024-11-10 13:54:23,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 13:54:23,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 13:54:23,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 13:54:23,617 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 13:54:23,617 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 13:54:23,618 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-1.i [2024-11-10 13:54:25,141 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 13:54:25,426 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 13:54:25,428 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-1.i [2024-11-10 13:54:25,453 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ef6082b/49cb4032e8e3402193dc17e5b2fd6e5b/FLAG57ba2c063 [2024-11-10 13:54:25,712 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ef6082b/49cb4032e8e3402193dc17e5b2fd6e5b [2024-11-10 13:54:25,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 13:54:25,715 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 13:54:25,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 13:54:25,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 13:54:25,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 13:54:25,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:54:25" (1/1) ... [2024-11-10 13:54:25,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dcc4ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:54:25, skipping insertion in model container [2024-11-10 13:54:25,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:54:25" (1/1) ... [2024-11-10 13:54:25,792 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 13:54:26,202 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-1.i[33519,33532] [2024-11-10 13:54:26,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 13:54:26,373 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 13:54:26,411 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-1.i[33519,33532] [2024-11-10 13:54:26,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 13:54:26,520 INFO L204 MainTranslator]: Completed translation [2024-11-10 13:54:26,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:54:26 WrapperNode [2024-11-10 13:54:26,521 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 13:54:26,522 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 13:54:26,522 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 13:54:26,522 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 13:54:26,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:54:26" (1/1) ... [2024-11-10 13:54:26,566 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:54:26" (1/1) ... [2024-11-10 13:54:26,635 INFO L138 Inliner]: procedures = 176, calls = 325, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1515 [2024-11-10 13:54:26,635 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 13:54:26,639 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 13:54:26,639 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 13:54:26,640 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 13:54:26,655 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:54:26" (1/1) ... [2024-11-10 13:54:26,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:54:26" (1/1) ... [2024-11-10 13:54:26,674 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:54:26" (1/1) ... [2024-11-10 13:54:26,774 INFO L175 MemorySlicer]: Split 309 memory accesses to 2 slices as follows [2, 307]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 82 writes are split as follows [0, 82]. [2024-11-10 13:54:26,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:54:26" (1/1) ... [2024-11-10 13:54:26,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:54:26" (1/1) ... [2024-11-10 13:54:26,822 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:54:26" (1/1) ... [2024-11-10 13:54:26,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:54:26" (1/1) ... [2024-11-10 13:54:26,831 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:54:26" (1/1) ... [2024-11-10 13:54:26,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:54:26" (1/1) ... [2024-11-10 13:54:26,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 13:54:26,848 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 13:54:26,849 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 13:54:26,849 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 13:54:26,850 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:54:26" (1/1) ... [2024-11-10 13:54:26,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 13:54:26,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:54:26,889 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 13:54:26,892 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 13:54:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 13:54:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 13:54:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 13:54:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 13:54:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-10 13:54:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-10 13:54:26,947 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-10 13:54:26,947 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-10 13:54:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 13:54:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 13:54:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 13:54:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 13:54:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 13:54:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 13:54:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 13:54:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 13:54:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 13:54:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 13:54:26,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 13:54:27,182 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 13:54:27,184 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 13:54:28,829 INFO L? ?]: Removed 377 outVars from TransFormulas that were not future-live. [2024-11-10 13:54:28,829 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 13:54:28,890 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 13:54:28,893 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-10 13:54:28,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 01:54:28 BoogieIcfgContainer [2024-11-10 13:54:28,894 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 13:54:28,896 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 13:54:28,896 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 13:54:28,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 13:54:28,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 01:54:25" (1/3) ... [2024-11-10 13:54:28,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d7c1b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:54:28, skipping insertion in model container [2024-11-10 13:54:28,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:54:26" (2/3) ... [2024-11-10 13:54:28,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d7c1b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:54:28, skipping insertion in model container [2024-11-10 13:54:28,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 01:54:28" (3/3) ... [2024-11-10 13:54:28,906 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test4-1.i [2024-11-10 13:54:28,923 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 13:54:28,923 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 13:54:29,001 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 13:54:29,007 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;@fa05421, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 13:54:29,008 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-10 13:54:29,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 409 states, 400 states have (on average 1.605) internal successors, (642), 401 states have internal predecessors, (642), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-10 13:54:29,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-10 13:54:29,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:54:29,020 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:54:29,021 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:54:29,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:54:29,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1111828091, now seen corresponding path program 1 times [2024-11-10 13:54:29,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:54:29,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245860932] [2024-11-10 13:54:29,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:29,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:54:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:29,191 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 13:54:29,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:54:29,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245860932] [2024-11-10 13:54:29,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245860932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:54:29,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:54:29,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 13:54:29,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675003444] [2024-11-10 13:54:29,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:54:29,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 13:54:29,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:54:29,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 13:54:29,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 13:54:29,231 INFO L87 Difference]: Start difference. First operand has 409 states, 400 states have (on average 1.605) internal successors, (642), 401 states have internal predecessors, (642), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:54:29,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:54:29,398 INFO L93 Difference]: Finished difference Result 815 states and 1304 transitions. [2024-11-10 13:54:29,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 13:54:29,400 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-10 13:54:29,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:54:29,409 INFO L225 Difference]: With dead ends: 815 [2024-11-10 13:54:29,409 INFO L226 Difference]: Without dead ends: 405 [2024-11-10 13:54:29,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 13:54:29,417 INFO L432 NwaCegarLoop]: 542 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 13:54:29,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 542 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 13:54:29,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-10 13:54:29,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2024-11-10 13:54:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 397 states have (on average 1.433249370277078) internal successors, (569), 397 states have internal predecessors, (569), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-10 13:54:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 581 transitions. [2024-11-10 13:54:29,492 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 581 transitions. Word has length 11 [2024-11-10 13:54:29,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:54:29,494 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 581 transitions. [2024-11-10 13:54:29,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:54:29,494 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 581 transitions. [2024-11-10 13:54:29,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-10 13:54:29,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:54:29,495 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:54:29,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 13:54:29,496 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:54:29,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:54:29,497 INFO L85 PathProgramCache]: Analyzing trace with hash -62893775, now seen corresponding path program 1 times [2024-11-10 13:54:29,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:54:29,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968991402] [2024-11-10 13:54:29,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:29,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:54:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:29,688 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 13:54:29,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:54:29,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968991402] [2024-11-10 13:54:29,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968991402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:54:29,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:54:29,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 13:54:29,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925747297] [2024-11-10 13:54:29,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:54:29,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 13:54:29,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:54:29,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 13:54:29,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 13:54:29,696 INFO L87 Difference]: Start difference. First operand 405 states and 581 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:54:30,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:54:30,156 INFO L93 Difference]: Finished difference Result 1134 states and 1641 transitions. [2024-11-10 13:54:30,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 13:54:30,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-10 13:54:30,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:54:30,163 INFO L225 Difference]: With dead ends: 1134 [2024-11-10 13:54:30,163 INFO L226 Difference]: Without dead ends: 729 [2024-11-10 13:54:30,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 13:54:30,166 INFO L432 NwaCegarLoop]: 535 mSDtfsCounter, 469 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 13:54:30,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 1535 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 13:54:30,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-10 13:54:30,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 729. [2024-11-10 13:54:30,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 718 states have (on average 1.448467966573816) internal successors, (1040), 718 states have internal predecessors, (1040), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 13:54:30,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1058 transitions. [2024-11-10 13:54:30,209 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1058 transitions. Word has length 12 [2024-11-10 13:54:30,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:54:30,210 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1058 transitions. [2024-11-10 13:54:30,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:54:30,210 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1058 transitions. [2024-11-10 13:54:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-10 13:54:30,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:54:30,219 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:30,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 13:54:30,220 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:54:30,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:54:30,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1314113807, now seen corresponding path program 1 times [2024-11-10 13:54:30,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:54:30,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945074487] [2024-11-10 13:54:30,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:30,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:54:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:30,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-11-10 13:54:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:30,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-11-10 13:54:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:30,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 13:54:30,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:54:30,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945074487] [2024-11-10 13:54:30,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945074487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:54:30,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:54:30,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 13:54:30,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334261580] [2024-11-10 13:54:30,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:54:30,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 13:54:30,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:54:30,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 13:54:30,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 13:54:30,930 INFO L87 Difference]: Start difference. First operand 729 states and 1058 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 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 13:54:31,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:54:31,477 INFO L93 Difference]: Finished difference Result 1405 states and 2043 transitions. [2024-11-10 13:54:31,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 13:54:31,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 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 176 [2024-11-10 13:54:31,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:54:31,484 INFO L225 Difference]: With dead ends: 1405 [2024-11-10 13:54:31,485 INFO L226 Difference]: Without dead ends: 738 [2024-11-10 13:54:31,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 13:54:31,488 INFO L432 NwaCegarLoop]: 508 mSDtfsCounter, 108 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 13:54:31,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1848 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 13:54:31,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2024-11-10 13:54:31,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 729. [2024-11-10 13:54:31,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 718 states have (on average 1.4289693593314763) internal successors, (1026), 718 states have internal predecessors, (1026), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 13:54:31,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1044 transitions. [2024-11-10 13:54:31,540 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1044 transitions. Word has length 176 [2024-11-10 13:54:31,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:54:31,541 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1044 transitions. [2024-11-10 13:54:31,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 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 13:54:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1044 transitions. [2024-11-10 13:54:31,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-10 13:54:31,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:54:31,550 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:31,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 13:54:31,551 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:54:31,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:54:31,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1426646648, now seen corresponding path program 1 times [2024-11-10 13:54:31,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:54:31,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930979221] [2024-11-10 13:54:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:31,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:54:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:31,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-11-10 13:54:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:31,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-11-10 13:54:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 13:54:31,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:54:31,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930979221] [2024-11-10 13:54:31,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930979221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:54:31,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:54:31,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 13:54:31,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37396056] [2024-11-10 13:54:31,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:54:31,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 13:54:31,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:54:31,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 13:54:31,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 13:54:31,844 INFO L87 Difference]: Start difference. First operand 729 states and 1044 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 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 13:54:32,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:54:32,547 INFO L93 Difference]: Finished difference Result 1315 states and 1892 transitions. [2024-11-10 13:54:32,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 13:54:32,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 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 176 [2024-11-10 13:54:32,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:54:32,553 INFO L225 Difference]: With dead ends: 1315 [2024-11-10 13:54:32,553 INFO L226 Difference]: Without dead ends: 730 [2024-11-10 13:54:32,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 13:54:32,555 INFO L432 NwaCegarLoop]: 528 mSDtfsCounter, 137 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-10 13:54:32,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1477 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-10 13:54:32,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2024-11-10 13:54:32,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 727. [2024-11-10 13:54:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 716 states have (on average 1.4287709497206704) internal successors, (1023), 716 states have internal predecessors, (1023), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 13:54:32,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1041 transitions. [2024-11-10 13:54:32,579 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1041 transitions. Word has length 176 [2024-11-10 13:54:32,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:54:32,581 INFO L471 AbstractCegarLoop]: Abstraction has 727 states and 1041 transitions. [2024-11-10 13:54:32,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 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 13:54:32,582 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1041 transitions. [2024-11-10 13:54:32,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-10 13:54:32,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:54:32,585 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:32,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 13:54:32,586 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:54:32,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:54:32,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1811520339, now seen corresponding path program 1 times [2024-11-10 13:54:32,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:54:32,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305736458] [2024-11-10 13:54:32,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:32,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:54:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:32,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-10 13:54:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:32,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-10 13:54:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:32,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-10 13:54:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:32,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-10 13:54:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 13:54:32,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:54:32,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305736458] [2024-11-10 13:54:32,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305736458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:54:32,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:54:32,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 13:54:32,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335449624] [2024-11-10 13:54:32,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:54:32,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 13:54:32,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:54:32,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 13:54:32,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 13:54:32,961 INFO L87 Difference]: Start difference. First operand 727 states and 1041 transitions. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 13:54:33,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:54:33,443 INFO L93 Difference]: Finished difference Result 1211 states and 1740 transitions. [2024-11-10 13:54:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 13:54:33,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 191 [2024-11-10 13:54:33,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:54:33,448 INFO L225 Difference]: With dead ends: 1211 [2024-11-10 13:54:33,449 INFO L226 Difference]: Without dead ends: 736 [2024-11-10 13:54:33,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 13:54:33,451 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 108 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 13:54:33,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1827 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 13:54:33,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2024-11-10 13:54:33,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 727. [2024-11-10 13:54:33,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 716 states have (on average 1.4092178770949721) internal successors, (1009), 716 states have internal predecessors, (1009), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 13:54:33,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1027 transitions. [2024-11-10 13:54:33,472 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1027 transitions. Word has length 191 [2024-11-10 13:54:33,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:54:33,473 INFO L471 AbstractCegarLoop]: Abstraction has 727 states and 1027 transitions. [2024-11-10 13:54:33,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 13:54:33,476 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1027 transitions. [2024-11-10 13:54:33,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-10 13:54:33,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:54:33,479 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:33,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 13:54:33,479 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:54:33,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:54:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash -120962252, now seen corresponding path program 1 times [2024-11-10 13:54:33,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:54:33,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435109615] [2024-11-10 13:54:33,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:33,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:54:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:34,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-10 13:54:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:34,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-10 13:54:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:34,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-10 13:54:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:34,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-10 13:54:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-10 13:54:34,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:54:34,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435109615] [2024-11-10 13:54:34,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435109615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 13:54:34,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859759886] [2024-11-10 13:54:34,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:34,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:54:34,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:54:34,872 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 13:54:34,873 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 13:54:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:35,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-10 13:54:35,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 13:54:35,500 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 16 treesize of output 17 [2024-11-10 13:54:36,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 13:54:36,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 58 [2024-11-10 13:54:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 13:54:36,386 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 13:54:36,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859759886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:54:36,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 13:54:36,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-11-10 13:54:36,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4361750] [2024-11-10 13:54:36,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:54:36,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 13:54:36,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:54:36,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 13:54:36,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-10 13:54:36,389 INFO L87 Difference]: Start difference. First operand 727 states and 1027 transitions. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 13:54:38,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:54:38,322 INFO L93 Difference]: Finished difference Result 1481 states and 2081 transitions. [2024-11-10 13:54:38,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 13:54:38,323 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 191 [2024-11-10 13:54:38,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:54:38,328 INFO L225 Difference]: With dead ends: 1481 [2024-11-10 13:54:38,328 INFO L226 Difference]: Without dead ends: 842 [2024-11-10 13:54:38,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-10 13:54:38,332 INFO L432 NwaCegarLoop]: 561 mSDtfsCounter, 829 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2867 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-10 13:54:38,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 2867 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-10 13:54:38,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2024-11-10 13:54:38,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 758. [2024-11-10 13:54:38,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 747 states have (on average 1.4016064257028114) internal successors, (1047), 747 states have internal predecessors, (1047), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 13:54:38,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1065 transitions. [2024-11-10 13:54:38,359 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1065 transitions. Word has length 191 [2024-11-10 13:54:38,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:54:38,359 INFO L471 AbstractCegarLoop]: Abstraction has 758 states and 1065 transitions. [2024-11-10 13:54:38,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 13:54:38,360 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1065 transitions. [2024-11-10 13:54:38,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-10 13:54:38,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:54:38,363 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:38,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 13:54:38,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-10 13:54:38,567 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:54:38,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:54:38,568 INFO L85 PathProgramCache]: Analyzing trace with hash 164173651, now seen corresponding path program 1 times [2024-11-10 13:54:38,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:54:38,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210160724] [2024-11-10 13:54:38,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:38,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:54:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:38,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-10 13:54:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:38,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-10 13:54:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:38,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-10 13:54:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:38,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-10 13:54:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:38,872 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 13:54:38,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:54:38,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210160724] [2024-11-10 13:54:38,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210160724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:54:38,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:54:38,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 13:54:38,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910136333] [2024-11-10 13:54:38,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:54:38,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 13:54:38,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:54:38,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 13:54:38,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 13:54:38,877 INFO L87 Difference]: Start difference. First operand 758 states and 1065 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 13:54:39,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:54:39,316 INFO L93 Difference]: Finished difference Result 1435 states and 2032 transitions. [2024-11-10 13:54:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 13:54:39,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 191 [2024-11-10 13:54:39,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:54:39,322 INFO L225 Difference]: With dead ends: 1435 [2024-11-10 13:54:39,322 INFO L226 Difference]: Without dead ends: 777 [2024-11-10 13:54:39,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 13:54:39,324 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 5 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 13:54:39,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1436 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 13:54:39,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-11-10 13:54:39,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 772. [2024-11-10 13:54:39,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 761 states have (on average 1.3915900131406045) internal successors, (1059), 761 states have internal predecessors, (1059), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 13:54:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1077 transitions. [2024-11-10 13:54:39,349 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1077 transitions. Word has length 191 [2024-11-10 13:54:39,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:54:39,350 INFO L471 AbstractCegarLoop]: Abstraction has 772 states and 1077 transitions. [2024-11-10 13:54:39,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 13:54:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1077 transitions. [2024-11-10 13:54:39,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-10 13:54:39,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:54:39,352 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:39,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 13:54:39,353 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:54:39,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:54:39,356 INFO L85 PathProgramCache]: Analyzing trace with hash -698130510, now seen corresponding path program 1 times [2024-11-10 13:54:39,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:54:39,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760871829] [2024-11-10 13:54:39,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:39,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:54:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:39,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-10 13:54:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:39,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-10 13:54:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:39,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-10 13:54:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:39,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-10 13:54:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 13:54:39,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:54:39,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760871829] [2024-11-10 13:54:39,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760871829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:54:39,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:54:39,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 13:54:39,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963170566] [2024-11-10 13:54:39,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:54:39,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 13:54:39,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:54:39,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 13:54:39,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 13:54:39,613 INFO L87 Difference]: Start difference. First operand 772 states and 1077 transitions. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 4 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 13:54:40,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:54:40,324 INFO L93 Difference]: Finished difference Result 1376 states and 1927 transitions. [2024-11-10 13:54:40,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 13:54:40,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 4 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 191 [2024-11-10 13:54:40,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:54:40,328 INFO L225 Difference]: With dead ends: 1376 [2024-11-10 13:54:40,328 INFO L226 Difference]: Without dead ends: 634 [2024-11-10 13:54:40,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 13:54:40,332 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 12 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-10 13:54:40,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1632 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-10 13:54:40,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-11-10 13:54:40,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 631. [2024-11-10 13:54:40,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 620 states have (on average 1.367741935483871) internal successors, (848), 620 states have internal predecessors, (848), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 13:54:40,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 866 transitions. [2024-11-10 13:54:40,355 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 866 transitions. Word has length 191 [2024-11-10 13:54:40,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:54:40,356 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 866 transitions. [2024-11-10 13:54:40,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 4 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 13:54:40,357 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 866 transitions. [2024-11-10 13:54:40,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-10 13:54:40,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:54:40,359 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:40,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 13:54:40,359 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:54:40,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:54:40,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2029944899, now seen corresponding path program 1 times [2024-11-10 13:54:40,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:54:40,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804783816] [2024-11-10 13:54:40,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:40,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:54:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:41,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-10 13:54:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:41,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-10 13:54:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:41,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-11-10 13:54:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:41,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-10 13:54:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:41,444 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-10 13:54:41,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:54:41,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804783816] [2024-11-10 13:54:41,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804783816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 13:54:41,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625954837] [2024-11-10 13:54:41,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:41,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:54:41,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:54:41,450 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 13:54:41,451 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 13:54:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:41,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-10 13:54:42,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 13:54:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 13:54:42,068 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 13:54:42,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625954837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:54:42,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 13:54:42,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-10 13:54:42,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507161735] [2024-11-10 13:54:42,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:54:42,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 13:54:42,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:54:42,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 13:54:42,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 13:54:42,071 INFO L87 Difference]: Start difference. First operand 631 states and 866 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 13:54:42,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:54:42,249 INFO L93 Difference]: Finished difference Result 1222 states and 1690 transitions. [2024-11-10 13:54:42,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 13:54:42,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 192 [2024-11-10 13:54:42,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:54:42,253 INFO L225 Difference]: With dead ends: 1222 [2024-11-10 13:54:42,253 INFO L226 Difference]: Without dead ends: 631 [2024-11-10 13:54:42,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 13:54:42,255 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 13 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 13:54:42,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1216 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 13:54:42,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2024-11-10 13:54:42,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2024-11-10 13:54:42,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 620 states have (on average 1.364516129032258) internal successors, (846), 620 states have internal predecessors, (846), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 13:54:42,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 864 transitions. [2024-11-10 13:54:42,273 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 864 transitions. Word has length 192 [2024-11-10 13:54:42,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:54:42,274 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 864 transitions. [2024-11-10 13:54:42,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 13:54:42,274 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 864 transitions. [2024-11-10 13:54:42,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-10 13:54:42,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:54:42,276 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:42,299 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 13:54:42,477 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,SelfDestructingSolverStorable8 [2024-11-10 13:54:42,478 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:54:42,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:54:42,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1350411863, now seen corresponding path program 1 times [2024-11-10 13:54:42,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:54:42,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754079790] [2024-11-10 13:54:42,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:42,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:54:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:43,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-10 13:54:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:43,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-10 13:54:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:43,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-11-10 13:54:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:43,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-11-10 13:54:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:43,036 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 13:54:43,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:54:43,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754079790] [2024-11-10 13:54:43,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754079790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:54:43,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:54:43,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 13:54:43,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813275474] [2024-11-10 13:54:43,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:54:43,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 13:54:43,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:54:43,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 13:54:43,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 13:54:43,040 INFO L87 Difference]: Start difference. First operand 631 states and 864 transitions. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 6 states have internal predecessors, (176), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 13:54:43,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:54:43,692 INFO L93 Difference]: Finished difference Result 1228 states and 1704 transitions. [2024-11-10 13:54:43,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 13:54:43,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 6 states have internal predecessors, (176), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 193 [2024-11-10 13:54:43,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:54:43,697 INFO L225 Difference]: With dead ends: 1228 [2024-11-10 13:54:43,697 INFO L226 Difference]: Without dead ends: 640 [2024-11-10 13:54:43,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 13:54:43,699 INFO L432 NwaCegarLoop]: 441 mSDtfsCounter, 7 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 13:54:43,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2296 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 13:54:43,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-11-10 13:54:43,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 637. [2024-11-10 13:54:43,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 626 states have (on average 1.3610223642172523) internal successors, (852), 626 states have internal predecessors, (852), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 13:54:43,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 870 transitions. [2024-11-10 13:54:43,720 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 870 transitions. Word has length 193 [2024-11-10 13:54:43,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:54:43,720 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 870 transitions. [2024-11-10 13:54:43,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 6 states have internal predecessors, (176), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 13:54:43,721 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 870 transitions. [2024-11-10 13:54:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-10 13:54:43,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:54:43,723 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:43,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 13:54:43,724 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:54:43,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:54:43,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1040272901, now seen corresponding path program 1 times [2024-11-10 13:54:43,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:54:43,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390536200] [2024-11-10 13:54:43,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:43,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:54:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:44,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-10 13:54:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:44,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-10 13:54:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:44,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-11-10 13:54:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:44,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-11-10 13:54:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:44,554 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-10 13:54:44,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:54:44,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390536200] [2024-11-10 13:54:44,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390536200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 13:54:44,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465280024] [2024-11-10 13:54:44,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:44,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:54:44,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:54:44,557 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 13:54:44,558 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 13:54:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:45,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 13:54:45,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 13:54:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 13:54:45,488 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 13:54:45,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465280024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:54:45,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 13:54:45,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 8 [2024-11-10 13:54:45,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178222104] [2024-11-10 13:54:45,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:54:45,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 13:54:45,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:54:45,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 13:54:45,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-10 13:54:45,491 INFO L87 Difference]: Start difference. First operand 637 states and 870 transitions. Second operand has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 13:54:45,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:54:45,717 INFO L93 Difference]: Finished difference Result 1247 states and 1719 transitions. [2024-11-10 13:54:45,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 13:54:45,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 194 [2024-11-10 13:54:45,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:54:45,722 INFO L225 Difference]: With dead ends: 1247 [2024-11-10 13:54:45,723 INFO L226 Difference]: Without dead ends: 703 [2024-11-10 13:54:45,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-10 13:54:45,724 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 772 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 13:54:45,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1887 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 13:54:45,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-11-10 13:54:45,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 640. [2024-11-10 13:54:45,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 628 states have (on average 1.3614649681528663) internal successors, (855), 629 states have internal predecessors, (855), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-10 13:54:45,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 876 transitions. [2024-11-10 13:54:45,743 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 876 transitions. Word has length 194 [2024-11-10 13:54:45,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:54:45,744 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 876 transitions. [2024-11-10 13:54:45,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 13:54:45,744 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 876 transitions. [2024-11-10 13:54:45,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-10 13:54:45,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:54:45,748 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:45,770 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 13:54:45,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:54:45,953 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:54:45,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:54:45,953 INFO L85 PathProgramCache]: Analyzing trace with hash -887268997, now seen corresponding path program 1 times [2024-11-10 13:54:45,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:54:45,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637450472] [2024-11-10 13:54:45,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:45,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:54:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:47,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-10 13:54:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:47,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-10 13:54:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:47,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-10 13:54:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:47,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-11-10 13:54:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:47,613 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-10 13:54:47,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:54:47,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637450472] [2024-11-10 13:54:47,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637450472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 13:54:47,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567050011] [2024-11-10 13:54:47,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:47,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:54:47,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:54:47,616 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 13:54:47,617 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 13:54:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:48,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 13:54:48,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 13:54:48,482 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-10 13:54:48,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 13:54:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-10 13:54:48,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567050011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 13:54:48,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 13:54:48,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2024-11-10 13:54:48,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655212929] [2024-11-10 13:54:48,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 13:54:48,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 13:54:48,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:54:48,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 13:54:48,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-10 13:54:48,584 INFO L87 Difference]: Start difference. First operand 640 states and 876 transitions. Second operand has 12 states, 12 states have (on average 21.916666666666668) internal successors, (263), 11 states have internal predecessors, (263), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-10 13:54:49,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:54:49,339 INFO L93 Difference]: Finished difference Result 1261 states and 1752 transitions. [2024-11-10 13:54:49,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 13:54:49,340 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.916666666666668) internal successors, (263), 11 states have internal predecessors, (263), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 198 [2024-11-10 13:54:49,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:54:49,344 INFO L225 Difference]: With dead ends: 1261 [2024-11-10 13:54:49,345 INFO L226 Difference]: Without dead ends: 714 [2024-11-10 13:54:49,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-11-10 13:54:49,347 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 393 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 2993 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 13:54:49,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 2993 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 13:54:49,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2024-11-10 13:54:49,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 649. [2024-11-10 13:54:49,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 636 states have (on average 1.3663522012578617) internal successors, (869), 637 states have internal predecessors, (869), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-10 13:54:49,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 893 transitions. [2024-11-10 13:54:49,369 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 893 transitions. Word has length 198 [2024-11-10 13:54:49,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:54:49,370 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 893 transitions. [2024-11-10 13:54:49,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.916666666666668) internal successors, (263), 11 states have internal predecessors, (263), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-10 13:54:49,370 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 893 transitions. [2024-11-10 13:54:49,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-10 13:54:49,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:54:49,373 INFO L215 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:49,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 13:54:49,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:54:49,574 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:54:49,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:54:49,575 INFO L85 PathProgramCache]: Analyzing trace with hash -562767493, now seen corresponding path program 2 times [2024-11-10 13:54:49,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:54:49,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976594928] [2024-11-10 13:54:49,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:49,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:54:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:50,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-10 13:54:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:50,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-10 13:54:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:50,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-11-10 13:54:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:50,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-11-10 13:54:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 48 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-10 13:54:50,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:54:50,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976594928] [2024-11-10 13:54:50,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976594928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 13:54:50,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997882864] [2024-11-10 13:54:50,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 13:54:50,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:54:50,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:54:50,884 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 13:54:50,885 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 13:54:51,702 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 13:54:51,703 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 13:54:51,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 13:54:51,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 13:54:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-10 13:54:51,828 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 13:54:51,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997882864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:54:51,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 13:54:51,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2024-11-10 13:54:51,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122115602] [2024-11-10 13:54:51,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:54:51,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 13:54:51,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:54:51,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 13:54:51,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-10 13:54:51,830 INFO L87 Difference]: Start difference. First operand 649 states and 893 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 13:54:52,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:54:52,340 INFO L93 Difference]: Finished difference Result 1159 states and 1599 transitions. [2024-11-10 13:54:52,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 13:54:52,340 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 206 [2024-11-10 13:54:52,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:54:52,343 INFO L225 Difference]: With dead ends: 1159 [2024-11-10 13:54:52,343 INFO L226 Difference]: Without dead ends: 743 [2024-11-10 13:54:52,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-10 13:54:52,345 INFO L432 NwaCegarLoop]: 434 mSDtfsCounter, 25 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 13:54:52,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2552 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 13:54:52,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2024-11-10 13:54:52,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 719. [2024-11-10 13:54:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 706 states have (on average 1.3526912181303117) internal successors, (955), 707 states have internal predecessors, (955), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-10 13:54:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 979 transitions. [2024-11-10 13:54:52,366 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 979 transitions. Word has length 206 [2024-11-10 13:54:52,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:54:52,367 INFO L471 AbstractCegarLoop]: Abstraction has 719 states and 979 transitions. [2024-11-10 13:54:52,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 13:54:52,367 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 979 transitions. [2024-11-10 13:54:52,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-10 13:54:52,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:54:52,369 INFO L215 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:52,394 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 13:54:52,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-10 13:54:52,571 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:54:52,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:54:52,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1122419650, now seen corresponding path program 1 times [2024-11-10 13:54:52,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:54:52,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401217221] [2024-11-10 13:54:52,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:52,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:54:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:53,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-10 13:54:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:53,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-10 13:54:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:53,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-11-10 13:54:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:53,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-11-10 13:54:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:53,317 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-10 13:54:53,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:54:53,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401217221] [2024-11-10 13:54:53,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401217221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:54:53,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:54:53,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 13:54:53,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008474933] [2024-11-10 13:54:53,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:54:53,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 13:54:53,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:54:53,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 13:54:53,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 13:54:53,320 INFO L87 Difference]: Start difference. First operand 719 states and 979 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 13:54:54,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:54:54,824 INFO L93 Difference]: Finished difference Result 1173 states and 1605 transitions. [2024-11-10 13:54:54,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 13:54:54,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 207 [2024-11-10 13:54:54,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:54:54,828 INFO L225 Difference]: With dead ends: 1173 [2024-11-10 13:54:54,828 INFO L226 Difference]: Without dead ends: 723 [2024-11-10 13:54:54,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-10 13:54:54,830 INFO L432 NwaCegarLoop]: 439 mSDtfsCounter, 16 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-10 13:54:54,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2060 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-10 13:54:54,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2024-11-10 13:54:54,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 713. [2024-11-10 13:54:54,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 700 states have (on average 1.35) internal successors, (945), 701 states have internal predecessors, (945), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-10 13:54:54,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 969 transitions. [2024-11-10 13:54:54,852 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 969 transitions. Word has length 207 [2024-11-10 13:54:54,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:54:54,852 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 969 transitions. [2024-11-10 13:54:54,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 13:54:54,853 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 969 transitions. [2024-11-10 13:54:54,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-10 13:54:54,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:54:54,855 INFO L215 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:54,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 13:54:54,856 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:54:54,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:54:54,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1827510344, now seen corresponding path program 1 times [2024-11-10 13:54:54,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:54:54,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058409567] [2024-11-10 13:54:54,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:54,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:54:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:55,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-10 13:54:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:55,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-10 13:54:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:55,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-11-10 13:54:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:55,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-11-10 13:54:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-10 13:54:55,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:54:55,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058409567] [2024-11-10 13:54:55,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058409567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:54:55,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:54:55,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 13:54:55,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718599459] [2024-11-10 13:54:55,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:54:55,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 13:54:55,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:54:55,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 13:54:55,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 13:54:55,409 INFO L87 Difference]: Start difference. First operand 713 states and 969 transitions. Second operand has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 6 states have internal predecessors, (180), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 13:54:56,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:54:56,074 INFO L93 Difference]: Finished difference Result 1172 states and 1602 transitions. [2024-11-10 13:54:56,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 13:54:56,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 6 states have internal predecessors, (180), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 208 [2024-11-10 13:54:56,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:54:56,078 INFO L225 Difference]: With dead ends: 1172 [2024-11-10 13:54:56,079 INFO L226 Difference]: Without dead ends: 727 [2024-11-10 13:54:56,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 13:54:56,081 INFO L432 NwaCegarLoop]: 441 mSDtfsCounter, 11 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 13:54:56,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2087 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 13:54:56,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-11-10 13:54:56,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 721. [2024-11-10 13:54:56,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 708 states have (on average 1.3488700564971752) internal successors, (955), 709 states have internal predecessors, (955), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-10 13:54:56,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 979 transitions. [2024-11-10 13:54:56,102 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 979 transitions. Word has length 208 [2024-11-10 13:54:56,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:54:56,102 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 979 transitions. [2024-11-10 13:54:56,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 6 states have internal predecessors, (180), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 13:54:56,103 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 979 transitions. [2024-11-10 13:54:56,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-10 13:54:56,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:54:56,128 INFO L215 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:56,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 13:54:56,129 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:54:56,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:54:56,129 INFO L85 PathProgramCache]: Analyzing trace with hash 791767676, now seen corresponding path program 1 times [2024-11-10 13:54:56,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:54:56,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113846478] [2024-11-10 13:54:56,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:56,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:54:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:57,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-10 13:54:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:57,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-10 13:54:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:57,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-11-10 13:54:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:57,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-11-10 13:54:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:57,604 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 48 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-10 13:54:57,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:54:57,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113846478] [2024-11-10 13:54:57,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113846478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 13:54:57,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976469042] [2024-11-10 13:54:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:54:57,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:54:57,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:54:57,607 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 13:54:57,608 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 13:54:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:54:58,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-10 13:54:58,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 13:54:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 95 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-10 13:54:58,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 13:55:02,836 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 19 proven. 53 refuted. 1 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-10 13:55:02,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976469042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 13:55:02,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 13:55:02,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 19 [2024-11-10 13:55:02,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542610680] [2024-11-10 13:55:02,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 13:55:02,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 13:55:02,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:55:02,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 13:55:02,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=252, Unknown=1, NotChecked=0, Total=342 [2024-11-10 13:55:02,839 INFO L87 Difference]: Start difference. First operand 721 states and 979 transitions. Second operand has 19 states, 19 states have (on average 11.052631578947368) internal successors, (210), 18 states have internal predecessors, (210), 2 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-10 13:55:04,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:55:04,011 INFO L93 Difference]: Finished difference Result 1368 states and 1886 transitions. [2024-11-10 13:55:04,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 13:55:04,012 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.052631578947368) internal successors, (210), 18 states have internal predecessors, (210), 2 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 209 [2024-11-10 13:55:04,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:55:04,015 INFO L225 Difference]: With dead ends: 1368 [2024-11-10 13:55:04,016 INFO L226 Difference]: Without dead ends: 736 [2024-11-10 13:55:04,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=268, Invalid=661, Unknown=1, NotChecked=0, Total=930 [2024-11-10 13:55:04,018 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 34 mSDsluCounter, 5922 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 6357 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-10 13:55:04,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 6357 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-10 13:55:04,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2024-11-10 13:55:04,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 730. [2024-11-10 13:55:04,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 717 states have (on average 1.3542538354253835) internal successors, (971), 718 states have internal predecessors, (971), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-10 13:55:04,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 995 transitions. [2024-11-10 13:55:04,042 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 995 transitions. Word has length 209 [2024-11-10 13:55:04,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:55:04,042 INFO L471 AbstractCegarLoop]: Abstraction has 730 states and 995 transitions. [2024-11-10 13:55:04,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.052631578947368) internal successors, (210), 18 states have internal predecessors, (210), 2 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-10 13:55:04,043 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 995 transitions. [2024-11-10 13:55:04,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-10 13:55:04,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:55:04,045 INFO L215 NwaCegarLoop]: trace histogram [26, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:04,072 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 13:55:04,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-10 13:55:04,247 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:55:04,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:55:04,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1700042478, now seen corresponding path program 2 times [2024-11-10 13:55:04,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:55:04,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913072911] [2024-11-10 13:55:04,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:55:04,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:55:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:05,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-10 13:55:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:05,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-10 13:55:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:05,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-11-10 13:55:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:05,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-11-10 13:55:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:05,647 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 2 proven. 116 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-10 13:55:05,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:55:05,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913072911] [2024-11-10 13:55:05,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913072911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 13:55:05,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635379025] [2024-11-10 13:55:05,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 13:55:05,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:55:05,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:55:05,649 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 13:55:05,650 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 13:55:07,095 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 13:55:07,095 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 13:55:07,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 13:55:07,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 13:55:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2024-11-10 13:55:07,376 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 13:55:07,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635379025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:55:07,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 13:55:07,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-10 13:55:07,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354295769] [2024-11-10 13:55:07,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:55:07,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 13:55:07,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:55:07,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 13:55:07,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-10 13:55:07,379 INFO L87 Difference]: Start difference. First operand 730 states and 995 transitions. Second operand has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 13:55:07,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:55:07,853 INFO L93 Difference]: Finished difference Result 1417 states and 1946 transitions. [2024-11-10 13:55:07,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 13:55:07,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 223 [2024-11-10 13:55:07,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:55:07,857 INFO L225 Difference]: With dead ends: 1417 [2024-11-10 13:55:07,857 INFO L226 Difference]: Without dead ends: 740 [2024-11-10 13:55:07,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-10 13:55:07,859 INFO L432 NwaCegarLoop]: 434 mSDtfsCounter, 8 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 13:55:07,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2320 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 13:55:07,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2024-11-10 13:55:07,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 738. [2024-11-10 13:55:07,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 725 states have (on average 1.3531034482758622) internal successors, (981), 726 states have internal predecessors, (981), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-10 13:55:07,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1005 transitions. [2024-11-10 13:55:07,880 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1005 transitions. Word has length 223 [2024-11-10 13:55:07,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:55:07,880 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 1005 transitions. [2024-11-10 13:55:07,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 13:55:07,881 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1005 transitions. [2024-11-10 13:55:07,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-10 13:55:07,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:55:07,882 INFO L215 NwaCegarLoop]: trace histogram [26, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:07,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 13:55:08,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:55:08,083 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:55:08,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:55:08,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1178717976, now seen corresponding path program 1 times [2024-11-10 13:55:08,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:55:08,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103166564] [2024-11-10 13:55:08,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:55:08,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:55:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:08,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-10 13:55:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:08,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-10 13:55:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:08,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-11-10 13:55:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:08,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-11-10 13:55:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:08,698 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2024-11-10 13:55:08,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:55:08,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103166564] [2024-11-10 13:55:08,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103166564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:55:08,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:55:08,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 13:55:08,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945122358] [2024-11-10 13:55:08,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:55:08,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 13:55:08,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:55:08,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 13:55:08,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-10 13:55:08,700 INFO L87 Difference]: Start difference. First operand 738 states and 1005 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 7 states have internal predecessors, (181), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 13:55:09,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:55:09,343 INFO L93 Difference]: Finished difference Result 1431 states and 1965 transitions. [2024-11-10 13:55:09,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 13:55:09,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 7 states have internal predecessors, (181), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 223 [2024-11-10 13:55:09,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:55:09,346 INFO L225 Difference]: With dead ends: 1431 [2024-11-10 13:55:09,346 INFO L226 Difference]: Without dead ends: 750 [2024-11-10 13:55:09,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-10 13:55:09,348 INFO L432 NwaCegarLoop]: 438 mSDtfsCounter, 11 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 13:55:09,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2670 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 13:55:09,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2024-11-10 13:55:09,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 738. [2024-11-10 13:55:09,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 725 states have (on average 1.3531034482758622) internal successors, (981), 726 states have internal predecessors, (981), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-10 13:55:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1005 transitions. [2024-11-10 13:55:09,375 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1005 transitions. Word has length 223 [2024-11-10 13:55:09,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:55:09,376 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 1005 transitions. [2024-11-10 13:55:09,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 7 states have internal predecessors, (181), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 13:55:09,376 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1005 transitions. [2024-11-10 13:55:09,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-10 13:55:09,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:55:09,379 INFO L215 NwaCegarLoop]: trace histogram [26, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:09,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-10 13:55:09,379 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:55:09,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:55:09,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1909214309, now seen corresponding path program 1 times [2024-11-10 13:55:09,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:55:09,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547187717] [2024-11-10 13:55:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:55:09,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:55:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:10,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-10 13:55:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:10,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-10 13:55:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:10,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-11-10 13:55:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:10,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-11-10 13:55:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 2 proven. 116 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-10 13:55:10,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:55:10,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547187717] [2024-11-10 13:55:10,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547187717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 13:55:10,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800808303] [2024-11-10 13:55:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:55:10,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:55:10,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:55:10,802 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 13:55:10,804 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 13:55:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:11,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-10 13:55:11,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 13:55:11,841 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2024-11-10 13:55:11,842 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 13:55:11,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800808303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:55:11,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 13:55:11,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-10 13:55:11,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431548209] [2024-11-10 13:55:11,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:55:11,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 13:55:11,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:55:11,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 13:55:11,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-10 13:55:11,844 INFO L87 Difference]: Start difference. First operand 738 states and 1005 transitions. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 13:55:12,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:55:12,357 INFO L93 Difference]: Finished difference Result 1434 states and 1965 transitions. [2024-11-10 13:55:12,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 13:55:12,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 224 [2024-11-10 13:55:12,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:55:12,362 INFO L225 Difference]: With dead ends: 1434 [2024-11-10 13:55:12,362 INFO L226 Difference]: Without dead ends: 758 [2024-11-10 13:55:12,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-10 13:55:12,364 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 33 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 13:55:12,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2712 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 13:55:12,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2024-11-10 13:55:12,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 748. [2024-11-10 13:55:12,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 735 states have (on average 1.3510204081632653) internal successors, (993), 736 states have internal predecessors, (993), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-10 13:55:12,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1017 transitions. [2024-11-10 13:55:12,384 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1017 transitions. Word has length 224 [2024-11-10 13:55:12,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:55:12,385 INFO L471 AbstractCegarLoop]: Abstraction has 748 states and 1017 transitions. [2024-11-10 13:55:12,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 13:55:12,385 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1017 transitions. [2024-11-10 13:55:12,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-10 13:55:12,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:55:12,387 INFO L215 NwaCegarLoop]: trace histogram [26, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:12,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 13:55:12,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:55:12,588 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:55:12,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:55:12,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1433013845, now seen corresponding path program 1 times [2024-11-10 13:55:12,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:55:12,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32532550] [2024-11-10 13:55:12,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:55:12,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:55:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:13,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-10 13:55:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:13,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-10 13:55:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:13,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-11-10 13:55:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:13,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-11-10 13:55:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2024-11-10 13:55:13,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:55:13,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32532550] [2024-11-10 13:55:13,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32532550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:55:13,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:55:13,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 13:55:13,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564412232] [2024-11-10 13:55:13,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:55:13,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 13:55:13,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:55:13,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 13:55:13,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-10 13:55:13,338 INFO L87 Difference]: Start difference. First operand 748 states and 1017 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 9 states have internal predecessors, (182), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 13:55:14,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:55:14,009 INFO L93 Difference]: Finished difference Result 1451 states and 1987 transitions. [2024-11-10 13:55:14,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 13:55:14,009 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 9 states have internal predecessors, (182), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 224 [2024-11-10 13:55:14,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:55:14,013 INFO L225 Difference]: With dead ends: 1451 [2024-11-10 13:55:14,013 INFO L226 Difference]: Without dead ends: 770 [2024-11-10 13:55:14,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-10 13:55:14,015 INFO L432 NwaCegarLoop]: 442 mSDtfsCounter, 19 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3505 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 13:55:14,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 3505 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 13:55:14,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2024-11-10 13:55:14,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 762. [2024-11-10 13:55:14,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 749 states have (on average 1.349799732977303) internal successors, (1011), 750 states have internal predecessors, (1011), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-10 13:55:14,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1035 transitions. [2024-11-10 13:55:14,035 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1035 transitions. Word has length 224 [2024-11-10 13:55:14,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:55:14,035 INFO L471 AbstractCegarLoop]: Abstraction has 762 states and 1035 transitions. [2024-11-10 13:55:14,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 9 states have internal predecessors, (182), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 13:55:14,035 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1035 transitions. [2024-11-10 13:55:14,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-10 13:55:14,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:55:14,037 INFO L215 NwaCegarLoop]: trace histogram [26, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:14,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-10 13:55:14,037 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:55:14,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:55:14,038 INFO L85 PathProgramCache]: Analyzing trace with hash -952946969, now seen corresponding path program 1 times [2024-11-10 13:55:14,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:55:14,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094480011] [2024-11-10 13:55:14,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:55:14,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:55:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:15,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-10 13:55:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:15,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-10 13:55:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:15,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-11-10 13:55:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:15,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-11-10 13:55:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:15,443 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 2 proven. 116 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-10 13:55:15,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:55:15,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094480011] [2024-11-10 13:55:15,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094480011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 13:55:15,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668677442] [2024-11-10 13:55:15,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:55:15,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:55:15,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:55:15,446 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 13:55:15,448 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 13:55:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:17,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-10 13:55:17,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 13:55:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 115 proven. 6 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2024-11-10 13:55:17,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 13:55:17,616 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 217 proven. 55 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-11-10 13:55:17,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668677442] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 13:55:17,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 13:55:17,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 14] total 25 [2024-11-10 13:55:17,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810882041] [2024-11-10 13:55:17,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 13:55:17,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-10 13:55:17,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:55:17,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-10 13:55:17,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2024-11-10 13:55:17,619 INFO L87 Difference]: Start difference. First operand 762 states and 1035 transitions. Second operand has 25 states, 25 states have (on average 14.4) internal successors, (360), 24 states have internal predecessors, (360), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-10 13:55:21,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:55:21,634 INFO L93 Difference]: Finished difference Result 1493 states and 2055 transitions. [2024-11-10 13:55:21,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-10 13:55:21,634 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 14.4) internal successors, (360), 24 states have internal predecessors, (360), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 225 [2024-11-10 13:55:21,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:55:21,638 INFO L225 Difference]: With dead ends: 1493 [2024-11-10 13:55:21,638 INFO L226 Difference]: Without dead ends: 836 [2024-11-10 13:55:21,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=554, Invalid=1086, Unknown=0, NotChecked=0, Total=1640 [2024-11-10 13:55:21,640 INFO L432 NwaCegarLoop]: 444 mSDtfsCounter, 396 mSDsluCounter, 6472 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 6916 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-10 13:55:21,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 6916 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-10 13:55:21,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2024-11-10 13:55:21,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 767. [2024-11-10 13:55:21,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 754 states have (on average 1.3488063660477454) internal successors, (1017), 755 states have internal predecessors, (1017), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-10 13:55:21,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1038 transitions. [2024-11-10 13:55:21,663 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1038 transitions. Word has length 225 [2024-11-10 13:55:21,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:55:21,663 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 1038 transitions. [2024-11-10 13:55:21,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.4) internal successors, (360), 24 states have internal predecessors, (360), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-10 13:55:21,664 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1038 transitions. [2024-11-10 13:55:21,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-10 13:55:21,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:55:21,666 INFO L215 NwaCegarLoop]: trace histogram [40, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:21,697 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 13:55:21,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:55:21,867 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:55:21,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:55:21,868 INFO L85 PathProgramCache]: Analyzing trace with hash -259586307, now seen corresponding path program 2 times [2024-11-10 13:55:21,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:55:21,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550702827] [2024-11-10 13:55:21,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:55:21,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:55:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:23,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-10 13:55:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:23,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-10 13:55:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:23,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-11-10 13:55:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:23,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-11-10 13:55:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:23,342 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 2 proven. 249 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-10 13:55:23,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:55:23,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550702827] [2024-11-10 13:55:23,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550702827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 13:55:23,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860929319] [2024-11-10 13:55:23,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 13:55:23,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:55:23,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:55:23,345 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 13:55:23,347 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 13:55:26,089 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 13:55:26,089 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 13:55:26,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 393 conjuncts are in the unsatisfiable core [2024-11-10 13:55:26,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 13:55:26,144 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 13:55:26,376 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 13:55:26,401 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-11-10 13:55:26,401 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 25 treesize of output 29 [2024-11-10 13:55:26,412 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 13:55:26,480 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 18 treesize of output 10 [2024-11-10 13:55:26,483 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 7 treesize of output 3 [2024-11-10 13:55:26,723 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-10 13:55:26,723 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-10 13:55:26,733 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 24 treesize of output 11 [2024-11-10 13:55:28,535 INFO L224 Elim1Store]: Index analysis took 161 ms