./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 77ae88daffb8285870a38f38e30db5571fe2930110ef63da660dc306a4cb95e3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 10:06:09,941 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 10:06:10,028 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-16 10:06:10,032 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 10:06:10,033 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 10:06:10,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 10:06:10,065 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 10:06:10,066 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 10:06:10,067 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 10:06:10,067 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 10:06:10,068 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 10:06:10,068 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 10:06:10,069 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 10:06:10,071 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 10:06:10,071 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 10:06:10,071 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 10:06:10,072 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 10:06:10,072 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 10:06:10,072 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 10:06:10,072 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 10:06:10,073 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 10:06:10,076 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 10:06:10,077 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 10:06:10,077 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 10:06:10,077 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 10:06:10,078 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 10:06:10,078 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 10:06:10,078 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 10:06:10,078 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 10:06:10,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 10:06:10,079 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 10:06:10,079 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 10:06:10,079 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 10:06:10,080 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 10:06:10,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 10:06:10,080 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 10:06:10,080 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 10:06:10,080 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 10:06:10,081 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 10:06:10,081 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77ae88daffb8285870a38f38e30db5571fe2930110ef63da660dc306a4cb95e3 [2024-11-16 10:06:10,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 10:06:10,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 10:06:10,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 10:06:10,384 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 10:06:10,385 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 10:06:10,386 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c [2024-11-16 10:06:11,876 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 10:06:12,119 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 10:06:12,119 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c [2024-11-16 10:06:12,135 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a09d4aa80/299e372227044dc386f23f1b9f69e815/FLAGe6eae3383 [2024-11-16 10:06:12,451 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a09d4aa80/299e372227044dc386f23f1b9f69e815 [2024-11-16 10:06:12,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 10:06:12,455 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 10:06:12,456 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 10:06:12,456 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 10:06:12,463 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 10:06:12,463 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:06:12" (1/1) ... [2024-11-16 10:06:12,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e53b27f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:06:12, skipping insertion in model container [2024-11-16 10:06:12,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:06:12" (1/1) ... [2024-11-16 10:06:12,512 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 10:06:12,715 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/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c[1270,1283] [2024-11-16 10:06:12,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 10:06:13,003 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 10:06:13,017 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/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c[1270,1283] [2024-11-16 10:06:13,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 10:06:13,226 INFO L204 MainTranslator]: Completed translation [2024-11-16 10:06:13,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:06:13 WrapperNode [2024-11-16 10:06:13,227 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 10:06:13,228 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 10:06:13,228 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 10:06:13,228 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 10:06:13,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:06:13" (1/1) ... [2024-11-16 10:06:13,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:06:13" (1/1) ... [2024-11-16 10:06:13,529 INFO L138 Inliner]: procedures = 18, calls = 41, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2364 [2024-11-16 10:06:13,530 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 10:06:13,531 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 10:06:13,531 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 10:06:13,531 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 10:06:13,542 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:06:13" (1/1) ... [2024-11-16 10:06:13,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:06:13" (1/1) ... [2024-11-16 10:06:13,591 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:06:13" (1/1) ... [2024-11-16 10:06:13,682 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 9, 9]. 45 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 8 writes are split as follows [0, 4, 4]. [2024-11-16 10:06:13,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:06:13" (1/1) ... [2024-11-16 10:06:13,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:06:13" (1/1) ... [2024-11-16 10:06:13,753 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:06:13" (1/1) ... [2024-11-16 10:06:13,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:06:13" (1/1) ... [2024-11-16 10:06:13,787 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:06:13" (1/1) ... [2024-11-16 10:06:13,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:06:13" (1/1) ... [2024-11-16 10:06:13,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 10:06:13,849 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 10:06:13,849 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 10:06:13,849 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 10:06:13,850 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:06:13" (1/1) ... [2024-11-16 10:06:13,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 10:06:13,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:13,883 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) [2024-11-16 10:06:13,888 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 [2024-11-16 10:06:13,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 10:06:13,935 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-16 10:06:13,936 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-16 10:06:13,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 10:06:13,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 10:06:13,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 10:06:13,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 10:06:13,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 10:06:13,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 10:06:13,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 10:06:13,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 10:06:13,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 10:06:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 10:06:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 10:06:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 10:06:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 10:06:14,210 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 10:06:14,212 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 10:06:16,286 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L73: call ULTIMATE.dealloc(main_~#state_14~0#1.base, main_~#state_14~0#1.offset);havoc main_~#state_14~0#1.base, main_~#state_14~0#1.offset;call ULTIMATE.dealloc(main_~#state_44~0#1.base, main_~#state_44~0#1.offset);havoc main_~#state_44~0#1.base, main_~#state_44~0#1.offset; [2024-11-16 10:06:16,674 INFO L? ?]: Removed 1277 outVars from TransFormulas that were not future-live. [2024-11-16 10:06:16,674 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 10:06:16,829 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 10:06:16,830 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 10:06:16,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:06:16 BoogieIcfgContainer [2024-11-16 10:06:16,831 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 10:06:16,833 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 10:06:16,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 10:06:16,837 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 10:06:16,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:06:12" (1/3) ... [2024-11-16 10:06:16,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd213a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:06:16, skipping insertion in model container [2024-11-16 10:06:16,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:06:13" (2/3) ... [2024-11-16 10:06:16,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd213a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:06:16, skipping insertion in model container [2024-11-16 10:06:16,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:06:16" (3/3) ... [2024-11-16 10:06:16,841 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c [2024-11-16 10:06:16,860 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 10:06:16,860 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 10:06:16,957 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 10:06:16,963 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;@2a2b7810, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 10:06:16,963 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 10:06:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 755 states, 747 states have (on average 1.4953145917001338) internal successors, (1117), 748 states have internal predecessors, (1117), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:06:17,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-16 10:06:17,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:17,002 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:17,003 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:17,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:17,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1490944832, now seen corresponding path program 1 times [2024-11-16 10:06:17,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:17,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663660364] [2024-11-16 10:06:17,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:17,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:17,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-16 10:06:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:17,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-16 10:06:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:17,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-16 10:06:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:17,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-16 10:06:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:17,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-16 10:06:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 10:06:17,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:17,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663660364] [2024-11-16 10:06:17,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663660364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:06:17,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 10:06:17,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 10:06:17,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189079862] [2024-11-16 10:06:17,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:17,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 10:06:17,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:17,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 10:06:17,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 10:06:17,627 INFO L87 Difference]: Start difference. First operand has 755 states, 747 states have (on average 1.4953145917001338) internal successors, (1117), 748 states have internal predecessors, (1117), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 108.0) internal successors, (216), 2 states have internal predecessors, (216), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:17,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:17,955 INFO L93 Difference]: Finished difference Result 1497 states and 2243 transitions. [2024-11-16 10:06:17,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 10:06:17,958 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 108.0) internal successors, (216), 2 states have internal predecessors, (216), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 238 [2024-11-16 10:06:17,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:17,981 INFO L225 Difference]: With dead ends: 1497 [2024-11-16 10:06:17,981 INFO L226 Difference]: Without dead ends: 750 [2024-11-16 10:06:17,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 10:06:17,996 INFO L432 NwaCegarLoop]: 936 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:17,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 936 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 10:06:18,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2024-11-16 10:06:18,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2024-11-16 10:06:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 743 states have (on average 1.4858681022880216) internal successors, (1104), 743 states have internal predecessors, (1104), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:06:18,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1114 transitions. [2024-11-16 10:06:18,076 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1114 transitions. Word has length 238 [2024-11-16 10:06:18,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:18,077 INFO L471 AbstractCegarLoop]: Abstraction has 750 states and 1114 transitions. [2024-11-16 10:06:18,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 108.0) internal successors, (216), 2 states have internal predecessors, (216), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:18,077 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1114 transitions. [2024-11-16 10:06:18,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-16 10:06:18,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:18,083 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:18,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 10:06:18,087 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:18,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:18,088 INFO L85 PathProgramCache]: Analyzing trace with hash -515558531, now seen corresponding path program 1 times [2024-11-16 10:06:18,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:18,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240414558] [2024-11-16 10:06:18,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:18,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:18,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 10:06:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:18,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 10:06:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:18,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-11-16 10:06:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:18,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-11-16 10:06:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:18,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-16 10:06:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:18,796 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 10:06:18,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:18,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240414558] [2024-11-16 10:06:18,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240414558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:06:18,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 10:06:18,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 10:06:18,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646274236] [2024-11-16 10:06:18,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:18,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 10:06:18,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:18,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 10:06:18,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 10:06:18,804 INFO L87 Difference]: Start difference. First operand 750 states and 1114 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:19,116 INFO L93 Difference]: Finished difference Result 1498 states and 2226 transitions. [2024-11-16 10:06:19,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 10:06:19,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 240 [2024-11-16 10:06:19,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:19,120 INFO L225 Difference]: With dead ends: 1498 [2024-11-16 10:06:19,120 INFO L226 Difference]: Without dead ends: 756 [2024-11-16 10:06:19,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 10:06:19,122 INFO L432 NwaCegarLoop]: 934 mSDtfsCounter, 6 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:19,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1865 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 10:06:19,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2024-11-16 10:06:19,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 752. [2024-11-16 10:06:19,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 745 states have (on average 1.4845637583892617) internal successors, (1106), 745 states have internal predecessors, (1106), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:06:19,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1116 transitions. [2024-11-16 10:06:19,146 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1116 transitions. Word has length 240 [2024-11-16 10:06:19,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:19,148 INFO L471 AbstractCegarLoop]: Abstraction has 752 states and 1116 transitions. [2024-11-16 10:06:19,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:19,148 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1116 transitions. [2024-11-16 10:06:19,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-16 10:06:19,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:19,154 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:19,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 10:06:19,154 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:19,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:19,155 INFO L85 PathProgramCache]: Analyzing trace with hash -451206853, now seen corresponding path program 1 times [2024-11-16 10:06:19,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:19,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622226683] [2024-11-16 10:06:19,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:19,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:19,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 10:06:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:19,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-16 10:06:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:19,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-16 10:06:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:19,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-16 10:06:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:19,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-11-16 10:06:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:19,665 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 10:06:19,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:19,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622226683] [2024-11-16 10:06:19,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622226683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:19,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563094050] [2024-11-16 10:06:19,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:19,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:19,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:19,668 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) [2024-11-16 10:06:19,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 10:06:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:20,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 10:06:20,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 10:06:20,177 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:06:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 10:06:20,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563094050] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:20,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:06:20,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-11-16 10:06:20,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099683778] [2024-11-16 10:06:20,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:20,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 10:06:20,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:20,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 10:06:20,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 10:06:20,243 INFO L87 Difference]: Start difference. First operand 752 states and 1116 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:20,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:20,572 INFO L93 Difference]: Finished difference Result 1473 states and 2188 transitions. [2024-11-16 10:06:20,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 10:06:20,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 244 [2024-11-16 10:06:20,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:20,576 INFO L225 Difference]: With dead ends: 1473 [2024-11-16 10:06:20,576 INFO L226 Difference]: Without dead ends: 754 [2024-11-16 10:06:20,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 10:06:20,579 INFO L432 NwaCegarLoop]: 934 mSDtfsCounter, 6 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:20,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1860 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 10:06:20,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-11-16 10:06:20,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2024-11-16 10:06:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 747 states have (on average 1.4832663989290495) internal successors, (1108), 747 states have internal predecessors, (1108), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-16 10:06:20,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1118 transitions. [2024-11-16 10:06:20,601 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1118 transitions. Word has length 244 [2024-11-16 10:06:20,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:20,601 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1118 transitions. [2024-11-16 10:06:20,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:20,602 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1118 transitions. [2024-11-16 10:06:20,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-16 10:06:20,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:20,606 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:20,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 10:06:20,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:20,811 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:20,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:20,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1069040061, now seen corresponding path program 1 times [2024-11-16 10:06:20,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:20,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489874311] [2024-11-16 10:06:20,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:20,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:21,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 10:06:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:21,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-16 10:06:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:21,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-16 10:06:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:21,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-16 10:06:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:21,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-11-16 10:06:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 10:06:21,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:21,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489874311] [2024-11-16 10:06:21,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489874311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:21,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458674942] [2024-11-16 10:06:21,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:21,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:21,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:21,288 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) [2024-11-16 10:06:21,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 10:06:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:21,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 10:06:21,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 10:06:21,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:06:22,721 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 10:06:22,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458674942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 10:06:22,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 10:06:22,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 8] total 12 [2024-11-16 10:06:22,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868742347] [2024-11-16 10:06:22,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 10:06:22,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 10:06:22,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:22,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 10:06:22,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-16 10:06:22,727 INFO L87 Difference]: Start difference. First operand 754 states and 1118 transitions. Second operand has 12 states, 12 states have (on average 30.0) internal successors, (360), 12 states have internal predecessors, (360), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-16 10:06:24,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:24,564 INFO L93 Difference]: Finished difference Result 2119 states and 3148 transitions. [2024-11-16 10:06:24,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 10:06:24,565 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 30.0) internal successors, (360), 12 states have internal predecessors, (360), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 248 [2024-11-16 10:06:24,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:24,570 INFO L225 Difference]: With dead ends: 2119 [2024-11-16 10:06:24,570 INFO L226 Difference]: Without dead ends: 1375 [2024-11-16 10:06:24,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-16 10:06:24,573 INFO L432 NwaCegarLoop]: 697 mSDtfsCounter, 6445 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6450 SdHoareTripleChecker+Valid, 3463 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:24,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6450 Valid, 3463 Invalid, 2163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2151 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 10:06:24,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2024-11-16 10:06:24,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 974. [2024-11-16 10:06:24,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 962 states have (on average 1.4802494802494803) internal successors, (1424), 962 states have internal predecessors, (1424), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 10:06:24,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1444 transitions. [2024-11-16 10:06:24,604 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1444 transitions. Word has length 248 [2024-11-16 10:06:24,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:24,604 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 1444 transitions. [2024-11-16 10:06:24,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 30.0) internal successors, (360), 12 states have internal predecessors, (360), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-16 10:06:24,605 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1444 transitions. [2024-11-16 10:06:24,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-11-16 10:06:24,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:24,609 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:24,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 10:06:24,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-16 10:06:24,810 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:24,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:24,811 INFO L85 PathProgramCache]: Analyzing trace with hash 764721080, now seen corresponding path program 1 times [2024-11-16 10:06:24,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:24,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993305277] [2024-11-16 10:06:24,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:24,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:25,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 10:06:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:25,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-11-16 10:06:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:25,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-16 10:06:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:25,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-16 10:06:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:25,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-16 10:06:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:25,254 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 10:06:25,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:25,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993305277] [2024-11-16 10:06:25,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993305277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:25,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890077946] [2024-11-16 10:06:25,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:25,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:25,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:25,258 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) [2024-11-16 10:06:25,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 10:06:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:25,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 10:06:25,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 10:06:25,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:06:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-16 10:06:25,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890077946] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 10:06:25,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 10:06:25,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-11-16 10:06:25,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749844184] [2024-11-16 10:06:25,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 10:06:25,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 10:06:25,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:25,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 10:06:25,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-16 10:06:25,829 INFO L87 Difference]: Start difference. First operand 974 states and 1444 transitions. Second operand has 9 states, 9 states have (on average 29.11111111111111) internal successors, (262), 9 states have internal predecessors, (262), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-16 10:06:26,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:26,434 INFO L93 Difference]: Finished difference Result 1978 states and 2936 transitions. [2024-11-16 10:06:26,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 10:06:26,434 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 29.11111111111111) internal successors, (262), 9 states have internal predecessors, (262), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 253 [2024-11-16 10:06:26,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:26,439 INFO L225 Difference]: With dead ends: 1978 [2024-11-16 10:06:26,439 INFO L226 Difference]: Without dead ends: 1020 [2024-11-16 10:06:26,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-16 10:06:26,441 INFO L432 NwaCegarLoop]: 942 mSDtfsCounter, 56 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 4687 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:26,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 4687 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 10:06:26,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2024-11-16 10:06:26,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1016. [2024-11-16 10:06:26,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1004 states have (on average 1.4741035856573705) internal successors, (1480), 1004 states have internal predecessors, (1480), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 10:06:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1500 transitions. [2024-11-16 10:06:26,468 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1500 transitions. Word has length 253 [2024-11-16 10:06:26,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:26,469 INFO L471 AbstractCegarLoop]: Abstraction has 1016 states and 1500 transitions. [2024-11-16 10:06:26,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.11111111111111) internal successors, (262), 9 states have internal predecessors, (262), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-16 10:06:26,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1500 transitions. [2024-11-16 10:06:26,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-16 10:06:26,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:26,473 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:26,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 10:06:26,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:26,678 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:26,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:26,678 INFO L85 PathProgramCache]: Analyzing trace with hash -148922892, now seen corresponding path program 2 times [2024-11-16 10:06:26,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:26,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933701140] [2024-11-16 10:06:26,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:26,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:27,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-16 10:06:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:27,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-16 10:06:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:27,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-16 10:06:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:27,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-11-16 10:06:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:27,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 10:06:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:27,193 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 10:06:27,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:27,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933701140] [2024-11-16 10:06:27,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933701140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:27,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481440214] [2024-11-16 10:06:27,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 10:06:27,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:27,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:27,196 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) [2024-11-16 10:06:27,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 10:06:27,671 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 10:06:27,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 10:06:27,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 10:06:27,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:28,153 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 10:06:28,154 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 10:06:28,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481440214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:06:28,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 10:06:28,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-16 10:06:28,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949391088] [2024-11-16 10:06:28,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:28,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 10:06:28,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 10:06:28,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-16 10:06:28,157 INFO L87 Difference]: Start difference. First operand 1016 states and 1500 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:28,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:28,590 INFO L93 Difference]: Finished difference Result 1676 states and 2480 transitions. [2024-11-16 10:06:28,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 10:06:28,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 269 [2024-11-16 10:06:28,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:28,596 INFO L225 Difference]: With dead ends: 1676 [2024-11-16 10:06:28,597 INFO L226 Difference]: Without dead ends: 1016 [2024-11-16 10:06:28,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-16 10:06:28,600 INFO L432 NwaCegarLoop]: 854 mSDtfsCounter, 979 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:28,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 1710 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 10:06:28,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2024-11-16 10:06:28,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1016. [2024-11-16 10:06:28,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1004 states have (on average 1.4701195219123506) internal successors, (1476), 1004 states have internal predecessors, (1476), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 10:06:28,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1496 transitions. [2024-11-16 10:06:28,624 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1496 transitions. Word has length 269 [2024-11-16 10:06:28,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:28,626 INFO L471 AbstractCegarLoop]: Abstraction has 1016 states and 1496 transitions. [2024-11-16 10:06:28,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:28,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1496 transitions. [2024-11-16 10:06:28,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-16 10:06:28,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:28,630 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:28,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 10:06:28,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:28,831 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:28,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:28,832 INFO L85 PathProgramCache]: Analyzing trace with hash 474316354, now seen corresponding path program 1 times [2024-11-16 10:06:28,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:28,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533862095] [2024-11-16 10:06:28,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:28,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:29,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-16 10:06:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:29,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-16 10:06:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:29,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-16 10:06:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:29,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-11-16 10:06:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:29,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 10:06:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 10:06:29,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:29,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533862095] [2024-11-16 10:06:29,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533862095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:29,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130043971] [2024-11-16 10:06:29,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:29,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:29,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:29,355 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) [2024-11-16 10:06:29,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 10:06:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:29,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 10:06:29,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 10:06:30,207 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 10:06:30,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130043971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:06:30,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 10:06:30,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-16 10:06:30,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79925819] [2024-11-16 10:06:30,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:30,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 10:06:30,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:30,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 10:06:30,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-16 10:06:30,211 INFO L87 Difference]: Start difference. First operand 1016 states and 1496 transitions. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:30,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:30,809 INFO L93 Difference]: Finished difference Result 1670 states and 2466 transitions. [2024-11-16 10:06:30,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 10:06:30,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 271 [2024-11-16 10:06:30,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:30,814 INFO L225 Difference]: With dead ends: 1670 [2024-11-16 10:06:30,815 INFO L226 Difference]: Without dead ends: 1016 [2024-11-16 10:06:30,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-16 10:06:30,818 INFO L432 NwaCegarLoop]: 854 mSDtfsCounter, 2034 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2039 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:30,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2039 Valid, 2557 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 10:06:30,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2024-11-16 10:06:30,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1016. [2024-11-16 10:06:30,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1004 states have (on average 1.4691235059760956) internal successors, (1475), 1004 states have internal predecessors, (1475), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 10:06:30,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1495 transitions. [2024-11-16 10:06:30,850 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1495 transitions. Word has length 271 [2024-11-16 10:06:30,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:30,851 INFO L471 AbstractCegarLoop]: Abstraction has 1016 states and 1495 transitions. [2024-11-16 10:06:30,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:30,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1495 transitions. [2024-11-16 10:06:30,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-16 10:06:30,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:30,854 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:30,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 10:06:31,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:31,059 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:31,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:31,060 INFO L85 PathProgramCache]: Analyzing trace with hash -234654471, now seen corresponding path program 1 times [2024-11-16 10:06:31,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:31,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386969062] [2024-11-16 10:06:31,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:31,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:31,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-16 10:06:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:31,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-16 10:06:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:31,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-16 10:06:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:31,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-11-16 10:06:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:31,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-16 10:06:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:31,573 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 10:06:31,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:31,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386969062] [2024-11-16 10:06:31,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386969062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:31,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827920931] [2024-11-16 10:06:31,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:31,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:31,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:31,577 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) [2024-11-16 10:06:31,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 10:06:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:32,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 10:06:32,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:32,127 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 10:06:32,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:06:32,290 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 14 proven. 36 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 10:06:32,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827920931] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 10:06:32,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 10:06:32,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 10] total 15 [2024-11-16 10:06:32,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754167868] [2024-11-16 10:06:32,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 10:06:32,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 10:06:32,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:32,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 10:06:32,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-16 10:06:32,294 INFO L87 Difference]: Start difference. First operand 1016 states and 1495 transitions. Second operand has 15 states, 15 states have (on average 18.2) internal successors, (273), 15 states have internal predecessors, (273), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-16 10:06:33,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:33,213 INFO L93 Difference]: Finished difference Result 2040 states and 3006 transitions. [2024-11-16 10:06:33,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 10:06:33,214 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 18.2) internal successors, (273), 15 states have internal predecessors, (273), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 272 [2024-11-16 10:06:33,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:33,220 INFO L225 Difference]: With dead ends: 2040 [2024-11-16 10:06:33,221 INFO L226 Difference]: Without dead ends: 1046 [2024-11-16 10:06:33,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2024-11-16 10:06:33,225 INFO L432 NwaCegarLoop]: 946 mSDtfsCounter, 84 mSDsluCounter, 8456 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 9402 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:33,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 9402 Invalid, 1915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 10:06:33,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2024-11-16 10:06:33,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1046. [2024-11-16 10:06:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1034 states have (on average 1.4651837524177949) internal successors, (1515), 1034 states have internal predecessors, (1515), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 10:06:33,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1535 transitions. [2024-11-16 10:06:33,252 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1535 transitions. Word has length 272 [2024-11-16 10:06:33,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:33,252 INFO L471 AbstractCegarLoop]: Abstraction has 1046 states and 1535 transitions. [2024-11-16 10:06:33,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.2) internal successors, (273), 15 states have internal predecessors, (273), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-16 10:06:33,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1535 transitions. [2024-11-16 10:06:33,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-11-16 10:06:33,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:33,256 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:33,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 10:06:33,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:33,457 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:33,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:33,458 INFO L85 PathProgramCache]: Analyzing trace with hash -2038879313, now seen corresponding path program 2 times [2024-11-16 10:06:33,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:33,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407429386] [2024-11-16 10:06:33,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:33,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:33,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 10:06:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:33,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-11-16 10:06:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:33,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-11-16 10:06:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:33,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-11-16 10:06:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:33,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-11-16 10:06:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:33,965 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-16 10:06:33,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:33,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407429386] [2024-11-16 10:06:33,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407429386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:33,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018491407] [2024-11-16 10:06:33,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 10:06:33,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:33,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:33,968 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) [2024-11-16 10:06:33,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 10:06:34,419 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 10:06:34,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 10:06:34,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 10:06:34,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-16 10:06:34,722 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 10:06:34,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018491407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:06:34,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 10:06:34,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-16 10:06:34,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835827916] [2024-11-16 10:06:34,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:34,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 10:06:34,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:34,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 10:06:34,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-16 10:06:34,724 INFO L87 Difference]: Start difference. First operand 1046 states and 1535 transitions. Second operand has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:35,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:35,211 INFO L93 Difference]: Finished difference Result 1700 states and 2504 transitions. [2024-11-16 10:06:35,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 10:06:35,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 292 [2024-11-16 10:06:35,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:35,215 INFO L225 Difference]: With dead ends: 1700 [2024-11-16 10:06:35,215 INFO L226 Difference]: Without dead ends: 1046 [2024-11-16 10:06:35,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-16 10:06:35,217 INFO L432 NwaCegarLoop]: 854 mSDtfsCounter, 2031 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:35,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 2548 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 10:06:35,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2024-11-16 10:06:35,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1046. [2024-11-16 10:06:35,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1034 states have (on average 1.4642166344294003) internal successors, (1514), 1034 states have internal predecessors, (1514), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 10:06:35,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1534 transitions. [2024-11-16 10:06:35,239 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1534 transitions. Word has length 292 [2024-11-16 10:06:35,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:35,240 INFO L471 AbstractCegarLoop]: Abstraction has 1046 states and 1534 transitions. [2024-11-16 10:06:35,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:35,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1534 transitions. [2024-11-16 10:06:35,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-16 10:06:35,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:35,242 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:35,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 10:06:35,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:35,444 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:35,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:35,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1757681964, now seen corresponding path program 1 times [2024-11-16 10:06:35,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:35,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114330742] [2024-11-16 10:06:35,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:35,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:36,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 10:06:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:36,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-11-16 10:06:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:36,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-11-16 10:06:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:36,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-11-16 10:06:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:36,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-11-16 10:06:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-16 10:06:36,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:36,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114330742] [2024-11-16 10:06:36,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114330742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:36,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299400732] [2024-11-16 10:06:36,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:36,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:36,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:36,031 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) [2024-11-16 10:06:36,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 10:06:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:36,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 10:06:36,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-16 10:06:36,679 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:06:36,804 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-16 10:06:36,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299400732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 10:06:36,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 10:06:36,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 18 [2024-11-16 10:06:36,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244770667] [2024-11-16 10:06:36,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 10:06:36,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 10:06:36,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:36,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 10:06:36,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-11-16 10:06:36,808 INFO L87 Difference]: Start difference. First operand 1046 states and 1534 transitions. Second operand has 18 states, 18 states have (on average 15.88888888888889) internal successors, (286), 18 states have internal predecessors, (286), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-16 10:06:37,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:37,788 INFO L93 Difference]: Finished difference Result 2018 states and 2975 transitions. [2024-11-16 10:06:37,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 10:06:37,789 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.88888888888889) internal successors, (286), 18 states have internal predecessors, (286), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 293 [2024-11-16 10:06:37,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:37,793 INFO L225 Difference]: With dead ends: 2018 [2024-11-16 10:06:37,793 INFO L226 Difference]: Without dead ends: 1094 [2024-11-16 10:06:37,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 585 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2024-11-16 10:06:37,795 INFO L432 NwaCegarLoop]: 968 mSDtfsCounter, 162 mSDsluCounter, 9606 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 10574 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:37,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 10574 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 10:06:37,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2024-11-16 10:06:37,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1094. [2024-11-16 10:06:37,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1082 states have (on average 1.4584103512014788) internal successors, (1578), 1082 states have internal predecessors, (1578), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 10:06:37,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1598 transitions. [2024-11-16 10:06:37,820 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1598 transitions. Word has length 293 [2024-11-16 10:06:37,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:37,820 INFO L471 AbstractCegarLoop]: Abstraction has 1094 states and 1598 transitions. [2024-11-16 10:06:37,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.88888888888889) internal successors, (286), 18 states have internal predecessors, (286), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-16 10:06:37,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1598 transitions. [2024-11-16 10:06:37,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-16 10:06:37,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:37,823 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:37,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 10:06:38,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 10:06:38,028 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:38,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:38,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1572256820, now seen corresponding path program 2 times [2024-11-16 10:06:38,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:38,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512096001] [2024-11-16 10:06:38,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:38,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:38,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-16 10:06:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:38,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-16 10:06:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:38,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-16 10:06:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:38,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-11-16 10:06:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:38,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-11-16 10:06:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:38,814 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-16 10:06:38,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:38,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512096001] [2024-11-16 10:06:38,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512096001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:06:38,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 10:06:38,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 10:06:38,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237264669] [2024-11-16 10:06:38,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:38,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 10:06:38,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:38,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 10:06:38,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 10:06:38,817 INFO L87 Difference]: Start difference. First operand 1094 states and 1598 transitions. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:39,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:39,122 INFO L93 Difference]: Finished difference Result 1099 states and 1603 transitions. [2024-11-16 10:06:39,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 10:06:39,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 309 [2024-11-16 10:06:39,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:39,128 INFO L225 Difference]: With dead ends: 1099 [2024-11-16 10:06:39,128 INFO L226 Difference]: Without dead ends: 1096 [2024-11-16 10:06:39,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 10:06:39,130 INFO L432 NwaCegarLoop]: 930 mSDtfsCounter, 0 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:39,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2785 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 10:06:39,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2024-11-16 10:06:39,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1096. [2024-11-16 10:06:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 1084 states have (on average 1.4575645756457565) internal successors, (1580), 1084 states have internal predecessors, (1580), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 10:06:39,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1600 transitions. [2024-11-16 10:06:39,154 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1600 transitions. Word has length 309 [2024-11-16 10:06:39,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:39,155 INFO L471 AbstractCegarLoop]: Abstraction has 1096 states and 1600 transitions. [2024-11-16 10:06:39,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:39,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1600 transitions. [2024-11-16 10:06:39,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-16 10:06:39,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:39,158 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:39,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 10:06:39,158 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:39,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:39,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1350267219, now seen corresponding path program 1 times [2024-11-16 10:06:39,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:39,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696941222] [2024-11-16 10:06:39,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:39,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:39,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-16 10:06:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:39,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-16 10:06:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:39,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-16 10:06:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:39,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-11-16 10:06:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:39,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-11-16 10:06:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-16 10:06:39,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:39,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696941222] [2024-11-16 10:06:39,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696941222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:06:39,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 10:06:39,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 10:06:39,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096005028] [2024-11-16 10:06:39,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:39,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 10:06:39,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:39,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 10:06:39,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 10:06:39,635 INFO L87 Difference]: Start difference. First operand 1096 states and 1600 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:39,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:39,979 INFO L93 Difference]: Finished difference Result 1754 states and 2573 transitions. [2024-11-16 10:06:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 10:06:39,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 310 [2024-11-16 10:06:39,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:39,984 INFO L225 Difference]: With dead ends: 1754 [2024-11-16 10:06:39,984 INFO L226 Difference]: Without dead ends: 1098 [2024-11-16 10:06:39,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 10:06:39,986 INFO L432 NwaCegarLoop]: 930 mSDtfsCounter, 0 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:39,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2782 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 10:06:39,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2024-11-16 10:06:40,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1098. [2024-11-16 10:06:40,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1086 states have (on average 1.4567219152854511) internal successors, (1582), 1086 states have internal predecessors, (1582), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 10:06:40,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1602 transitions. [2024-11-16 10:06:40,010 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1602 transitions. Word has length 310 [2024-11-16 10:06:40,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:40,011 INFO L471 AbstractCegarLoop]: Abstraction has 1098 states and 1602 transitions. [2024-11-16 10:06:40,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:40,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1602 transitions. [2024-11-16 10:06:40,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-16 10:06:40,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:40,014 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:40,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 10:06:40,014 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:40,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:40,014 INFO L85 PathProgramCache]: Analyzing trace with hash 838633297, now seen corresponding path program 1 times [2024-11-16 10:06:40,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:40,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434146738] [2024-11-16 10:06:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:40,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:41,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-16 10:06:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:41,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-16 10:06:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:41,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-16 10:06:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:41,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-11-16 10:06:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:41,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-11-16 10:06:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:41,302 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-16 10:06:41,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:41,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434146738] [2024-11-16 10:06:41,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434146738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:06:41,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 10:06:41,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 10:06:41,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918861219] [2024-11-16 10:06:41,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:41,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 10:06:41,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:41,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 10:06:41,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 10:06:41,305 INFO L87 Difference]: Start difference. First operand 1098 states and 1602 transitions. Second operand has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:41,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:41,771 INFO L93 Difference]: Finished difference Result 1912 states and 2806 transitions. [2024-11-16 10:06:41,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 10:06:41,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 311 [2024-11-16 10:06:41,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:41,777 INFO L225 Difference]: With dead ends: 1912 [2024-11-16 10:06:41,777 INFO L226 Difference]: Without dead ends: 1254 [2024-11-16 10:06:41,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 10:06:41,779 INFO L432 NwaCegarLoop]: 927 mSDtfsCounter, 150 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 3700 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:41,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 3700 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 10:06:41,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2024-11-16 10:06:41,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1252. [2024-11-16 10:06:41,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1240 states have (on average 1.4596774193548387) internal successors, (1810), 1240 states have internal predecessors, (1810), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 10:06:41,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1830 transitions. [2024-11-16 10:06:41,808 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1830 transitions. Word has length 311 [2024-11-16 10:06:41,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:41,809 INFO L471 AbstractCegarLoop]: Abstraction has 1252 states and 1830 transitions. [2024-11-16 10:06:41,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:41,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1830 transitions. [2024-11-16 10:06:41,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-16 10:06:41,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:41,812 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:41,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 10:06:41,812 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:41,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:41,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1362475608, now seen corresponding path program 1 times [2024-11-16 10:06:41,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:41,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98081581] [2024-11-16 10:06:41,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:41,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:42,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-16 10:06:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:42,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-16 10:06:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:42,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-16 10:06:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:42,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-11-16 10:06:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:42,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-11-16 10:06:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:42,760 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-16 10:06:42,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:42,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98081581] [2024-11-16 10:06:42,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98081581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:06:42,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 10:06:42,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 10:06:42,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312477003] [2024-11-16 10:06:42,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:42,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 10:06:42,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:42,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 10:06:42,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 10:06:42,763 INFO L87 Difference]: Start difference. First operand 1252 states and 1830 transitions. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 10:06:44,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:44,014 INFO L93 Difference]: Finished difference Result 2983 states and 4390 transitions. [2024-11-16 10:06:44,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 10:06:44,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 312 [2024-11-16 10:06:44,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:44,020 INFO L225 Difference]: With dead ends: 2983 [2024-11-16 10:06:44,020 INFO L226 Difference]: Without dead ends: 1260 [2024-11-16 10:06:44,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-16 10:06:44,023 INFO L432 NwaCegarLoop]: 1422 mSDtfsCounter, 1858 mSDsluCounter, 4953 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 6375 SdHoareTripleChecker+Invalid, 1877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:44,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1862 Valid, 6375 Invalid, 1877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 10:06:44,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2024-11-16 10:06:44,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1256. [2024-11-16 10:06:44,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1244 states have (on average 1.4565916398713827) internal successors, (1812), 1244 states have internal predecessors, (1812), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 10:06:44,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1832 transitions. [2024-11-16 10:06:44,051 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1832 transitions. Word has length 312 [2024-11-16 10:06:44,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:44,052 INFO L471 AbstractCegarLoop]: Abstraction has 1256 states and 1832 transitions. [2024-11-16 10:06:44,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 10:06:44,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1832 transitions. [2024-11-16 10:06:44,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-16 10:06:44,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:44,055 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:44,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 10:06:44,055 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:44,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1263494697, now seen corresponding path program 1 times [2024-11-16 10:06:44,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:44,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887686269] [2024-11-16 10:06:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:44,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:44,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-16 10:06:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:44,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-11-16 10:06:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:45,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-11-16 10:06:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:45,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-11-16 10:06:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:45,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-11-16 10:06:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:45,009 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-16 10:06:45,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:45,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887686269] [2024-11-16 10:06:45,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887686269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:06:45,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 10:06:45,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 10:06:45,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288023341] [2024-11-16 10:06:45,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:45,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 10:06:45,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:45,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 10:06:45,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 10:06:45,012 INFO L87 Difference]: Start difference. First operand 1256 states and 1832 transitions. Second operand has 6 states, 6 states have (on average 38.833333333333336) internal successors, (233), 6 states have internal predecessors, (233), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:46,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:46,136 INFO L93 Difference]: Finished difference Result 2625 states and 3854 transitions. [2024-11-16 10:06:46,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 10:06:46,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.833333333333336) internal successors, (233), 6 states have internal predecessors, (233), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 313 [2024-11-16 10:06:46,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:46,143 INFO L225 Difference]: With dead ends: 2625 [2024-11-16 10:06:46,144 INFO L226 Difference]: Without dead ends: 1811 [2024-11-16 10:06:46,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 10:06:46,148 INFO L432 NwaCegarLoop]: 689 mSDtfsCounter, 1862 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:46,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1867 Valid, 2741 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 10:06:46,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2024-11-16 10:06:46,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1257. [2024-11-16 10:06:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 1245 states have (on average 1.4562248995983935) internal successors, (1813), 1245 states have internal predecessors, (1813), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 10:06:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1833 transitions. [2024-11-16 10:06:46,183 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1833 transitions. Word has length 313 [2024-11-16 10:06:46,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:46,184 INFO L471 AbstractCegarLoop]: Abstraction has 1257 states and 1833 transitions. [2024-11-16 10:06:46,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.833333333333336) internal successors, (233), 6 states have internal predecessors, (233), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:46,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1833 transitions. [2024-11-16 10:06:46,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-16 10:06:46,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:46,187 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:46,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 10:06:46,187 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:46,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:46,188 INFO L85 PathProgramCache]: Analyzing trace with hash 892653974, now seen corresponding path program 1 times [2024-11-16 10:06:46,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:46,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290794859] [2024-11-16 10:06:46,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:46,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:47,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-16 10:06:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:47,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-11-16 10:06:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:47,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-16 10:06:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:47,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-11-16 10:06:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:47,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-11-16 10:06:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:47,498 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-16 10:06:47,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:47,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290794859] [2024-11-16 10:06:47,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290794859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:06:47,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 10:06:47,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 10:06:47,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258601347] [2024-11-16 10:06:47,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:47,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 10:06:47,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:47,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 10:06:47,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 10:06:47,500 INFO L87 Difference]: Start difference. First operand 1257 states and 1833 transitions. Second operand has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:48,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:48,246 INFO L93 Difference]: Finished difference Result 2547 states and 3739 transitions. [2024-11-16 10:06:48,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 10:06:48,247 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 313 [2024-11-16 10:06:48,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:48,253 INFO L225 Difference]: With dead ends: 2547 [2024-11-16 10:06:48,253 INFO L226 Difference]: Without dead ends: 1733 [2024-11-16 10:06:48,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-16 10:06:48,255 INFO L432 NwaCegarLoop]: 914 mSDtfsCounter, 1803 mSDsluCounter, 3646 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1808 SdHoareTripleChecker+Valid, 4560 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:48,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1808 Valid, 4560 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 10:06:48,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2024-11-16 10:06:48,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2024-11-16 10:06:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1716 states have (on average 1.460955710955711) internal successors, (2507), 1716 states have internal predecessors, (2507), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 10:06:48,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2537 transitions. [2024-11-16 10:06:48,312 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2537 transitions. Word has length 313 [2024-11-16 10:06:48,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:48,313 INFO L471 AbstractCegarLoop]: Abstraction has 1733 states and 2537 transitions. [2024-11-16 10:06:48,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 10:06:48,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2537 transitions. [2024-11-16 10:06:48,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2024-11-16 10:06:48,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:48,323 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:48,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 10:06:48,323 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:48,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:48,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1792654415, now seen corresponding path program 1 times [2024-11-16 10:06:48,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:48,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241672419] [2024-11-16 10:06:48,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:48,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:49,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-16 10:06:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:49,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-11-16 10:06:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:49,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-16 10:06:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:49,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-11-16 10:06:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:49,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-11-16 10:06:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:49,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2024-11-16 10:06:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:49,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2024-11-16 10:06:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:49,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2024-11-16 10:06:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:49,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2024-11-16 10:06:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:49,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2024-11-16 10:06:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:49,275 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-16 10:06:49,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:49,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241672419] [2024-11-16 10:06:49,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241672419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:06:49,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 10:06:49,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 10:06:49,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175972066] [2024-11-16 10:06:49,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:49,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 10:06:49,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:49,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 10:06:49,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 10:06:49,284 INFO L87 Difference]: Start difference. First operand 1733 states and 2537 transitions. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 10:06:49,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:49,557 INFO L93 Difference]: Finished difference Result 2549 states and 3741 transitions. [2024-11-16 10:06:49,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 10:06:49,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 676 [2024-11-16 10:06:49,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:49,564 INFO L225 Difference]: With dead ends: 2549 [2024-11-16 10:06:49,564 INFO L226 Difference]: Without dead ends: 1735 [2024-11-16 10:06:49,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 10:06:49,566 INFO L432 NwaCegarLoop]: 930 mSDtfsCounter, 0 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:49,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1856 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 10:06:49,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2024-11-16 10:06:49,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1735. [2024-11-16 10:06:49,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1718 states have (on average 1.460419091967404) internal successors, (2509), 1718 states have internal predecessors, (2509), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 10:06:49,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2539 transitions. [2024-11-16 10:06:49,610 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2539 transitions. Word has length 676 [2024-11-16 10:06:49,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:49,610 INFO L471 AbstractCegarLoop]: Abstraction has 1735 states and 2539 transitions. [2024-11-16 10:06:49,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 10:06:49,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2539 transitions. [2024-11-16 10:06:49,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2024-11-16 10:06:49,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:49,619 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:49,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 10:06:49,619 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:49,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:49,620 INFO L85 PathProgramCache]: Analyzing trace with hash 516901104, now seen corresponding path program 1 times [2024-11-16 10:06:49,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:49,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324337958] [2024-11-16 10:06:49,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:49,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:50,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-16 10:06:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:50,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-11-16 10:06:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:50,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-16 10:06:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:50,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-11-16 10:06:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:50,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-11-16 10:06:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:50,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2024-11-16 10:06:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:50,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2024-11-16 10:06:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:50,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2024-11-16 10:06:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:50,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2024-11-16 10:06:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:50,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2024-11-16 10:06:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-16 10:06:50,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:50,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324337958] [2024-11-16 10:06:50,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324337958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:50,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271962520] [2024-11-16 10:06:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:50,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:50,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:50,747 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) [2024-11-16 10:06:50,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 10:06:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:51,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 3331 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 10:06:51,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-11-16 10:06:52,555 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 10:06:52,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271962520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:06:52,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 10:06:52,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-16 10:06:52,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964865690] [2024-11-16 10:06:52,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:52,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 10:06:52,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:52,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 10:06:52,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 10:06:52,559 INFO L87 Difference]: Start difference. First operand 1735 states and 2539 transitions. Second operand has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 10:06:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:53,065 INFO L93 Difference]: Finished difference Result 2550 states and 3741 transitions. [2024-11-16 10:06:53,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 10:06:53,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 678 [2024-11-16 10:06:53,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:53,072 INFO L225 Difference]: With dead ends: 2550 [2024-11-16 10:06:53,072 INFO L226 Difference]: Without dead ends: 1734 [2024-11-16 10:06:53,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 697 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-16 10:06:53,075 INFO L432 NwaCegarLoop]: 688 mSDtfsCounter, 836 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:53,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1378 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 10:06:53,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2024-11-16 10:06:53,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1734. [2024-11-16 10:06:53,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1717 states have (on average 1.4595224228305184) internal successors, (2506), 1717 states have internal predecessors, (2506), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 10:06:53,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2536 transitions. [2024-11-16 10:06:53,110 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2536 transitions. Word has length 678 [2024-11-16 10:06:53,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:53,111 INFO L471 AbstractCegarLoop]: Abstraction has 1734 states and 2536 transitions. [2024-11-16 10:06:53,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 10:06:53,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2536 transitions. [2024-11-16 10:06:53,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2024-11-16 10:06:53,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:53,118 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:53,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 10:06:53,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 10:06:53,319 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:53,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:53,320 INFO L85 PathProgramCache]: Analyzing trace with hash -564375306, now seen corresponding path program 1 times [2024-11-16 10:06:53,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:53,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027012277] [2024-11-16 10:06:53,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:53,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:54,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-16 10:06:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:54,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-11-16 10:06:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:54,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-16 10:06:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:54,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-11-16 10:06:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:54,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-11-16 10:06:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:54,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2024-11-16 10:06:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:54,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2024-11-16 10:06:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:54,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2024-11-16 10:06:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:54,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2024-11-16 10:06:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:54,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2024-11-16 10:06:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-16 10:06:54,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:54,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027012277] [2024-11-16 10:06:54,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027012277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:54,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610430330] [2024-11-16 10:06:54,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:54,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:54,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:54,327 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) [2024-11-16 10:06:54,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 10:06:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:55,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 3334 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 10:06:55,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:56,178 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-11-16 10:06:56,178 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 10:06:56,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610430330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:06:56,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 10:06:56,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-16 10:06:56,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402084330] [2024-11-16 10:06:56,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:56,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 10:06:56,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:56,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 10:06:56,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 10:06:56,181 INFO L87 Difference]: Start difference. First operand 1734 states and 2536 transitions. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 10:06:56,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:06:56,718 INFO L93 Difference]: Finished difference Result 2548 states and 3735 transitions. [2024-11-16 10:06:56,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 10:06:56,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 679 [2024-11-16 10:06:56,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:06:56,725 INFO L225 Difference]: With dead ends: 2548 [2024-11-16 10:06:56,725 INFO L226 Difference]: Without dead ends: 1733 [2024-11-16 10:06:56,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 698 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-16 10:06:56,728 INFO L432 NwaCegarLoop]: 688 mSDtfsCounter, 828 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 10:06:56,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1378 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 10:06:56,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2024-11-16 10:06:56,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2024-11-16 10:06:56,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1716 states have (on average 1.4586247086247086) internal successors, (2503), 1716 states have internal predecessors, (2503), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 10:06:56,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2533 transitions. [2024-11-16 10:06:56,762 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2533 transitions. Word has length 679 [2024-11-16 10:06:56,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:06:56,762 INFO L471 AbstractCegarLoop]: Abstraction has 1733 states and 2533 transitions. [2024-11-16 10:06:56,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 10:06:56,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2533 transitions. [2024-11-16 10:06:56,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2024-11-16 10:06:56,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:06:56,769 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:06:56,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-16 10:06:56,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:56,970 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:06:56,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:06:56,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1528880378, now seen corresponding path program 1 times [2024-11-16 10:06:56,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:06:56,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097020950] [2024-11-16 10:06:56,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:56,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:06:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:57,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-16 10:06:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:57,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-11-16 10:06:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:57,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-16 10:06:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:57,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-11-16 10:06:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:57,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-11-16 10:06:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:57,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2024-11-16 10:06:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:57,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2024-11-16 10:06:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:57,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2024-11-16 10:06:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:57,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2024-11-16 10:06:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:57,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2024-11-16 10:06:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-16 10:06:57,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:06:57,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097020950] [2024-11-16 10:06:57,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097020950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:06:57,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135931590] [2024-11-16 10:06:57,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:06:57,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:06:57,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:06:57,949 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:06:57,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 10:06:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:06:58,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 3337 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 10:06:59,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:06:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-11-16 10:06:59,745 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 10:06:59,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135931590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 10:06:59,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 10:06:59,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-16 10:06:59,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884418133] [2024-11-16 10:06:59,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:06:59,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 10:06:59,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:06:59,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 10:06:59,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 10:06:59,748 INFO L87 Difference]: Start difference. First operand 1733 states and 2533 transitions. Second operand has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 10:07:00,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:07:00,234 INFO L93 Difference]: Finished difference Result 2546 states and 3729 transitions. [2024-11-16 10:07:00,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 10:07:00,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 680 [2024-11-16 10:07:00,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:07:00,240 INFO L225 Difference]: With dead ends: 2546 [2024-11-16 10:07:00,240 INFO L226 Difference]: Without dead ends: 1732 [2024-11-16 10:07:00,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 699 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-16 10:07:00,243 INFO L432 NwaCegarLoop]: 688 mSDtfsCounter, 814 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 10:07:00,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 1378 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 10:07:00,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2024-11-16 10:07:00,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1732. [2024-11-16 10:07:00,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1715 states have (on average 1.4577259475218658) internal successors, (2500), 1715 states have internal predecessors, (2500), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 10:07:00,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2530 transitions. [2024-11-16 10:07:00,277 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2530 transitions. Word has length 680 [2024-11-16 10:07:00,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:07:00,278 INFO L471 AbstractCegarLoop]: Abstraction has 1732 states and 2530 transitions. [2024-11-16 10:07:00,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 10:07:00,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2530 transitions. [2024-11-16 10:07:00,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2024-11-16 10:07:00,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:07:00,285 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:07:00,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 10:07:00,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:07:00,486 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:07:00,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:07:00,486 INFO L85 PathProgramCache]: Analyzing trace with hash 307440461, now seen corresponding path program 1 times [2024-11-16 10:07:00,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:07:00,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174184334] [2024-11-16 10:07:00,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:07:00,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:07:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:01,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-16 10:07:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:01,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-11-16 10:07:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:01,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-16 10:07:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:01,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-11-16 10:07:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:01,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-11-16 10:07:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:01,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2024-11-16 10:07:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:01,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2024-11-16 10:07:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:01,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2024-11-16 10:07:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:01,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2024-11-16 10:07:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:01,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2024-11-16 10:07:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:01,553 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-16 10:07:01,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:07:01,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174184334] [2024-11-16 10:07:01,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174184334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:07:01,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589290453] [2024-11-16 10:07:01,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:07:01,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:07:01,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:07:01,558 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:07:01,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 10:07:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:02,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 3340 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-16 10:07:02,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:07:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 276 proven. 128 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-16 10:07:03,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:07:04,117 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-11-16 10:07:04,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589290453] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:07:04,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:07:04,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2024-11-16 10:07:04,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712894988] [2024-11-16 10:07:04,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:07:04,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 10:07:04,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:07:04,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 10:07:04,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-16 10:07:04,120 INFO L87 Difference]: Start difference. First operand 1732 states and 2530 transitions. Second operand has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 10:07:04,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:07:04,477 INFO L93 Difference]: Finished difference Result 2545 states and 3724 transitions. [2024-11-16 10:07:04,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 10:07:04,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 681 [2024-11-16 10:07:04,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:07:04,484 INFO L225 Difference]: With dead ends: 2545 [2024-11-16 10:07:04,484 INFO L226 Difference]: Without dead ends: 1732 [2024-11-16 10:07:04,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1385 GetRequests, 1367 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-11-16 10:07:04,486 INFO L432 NwaCegarLoop]: 847 mSDtfsCounter, 911 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 10:07:04,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 1705 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 10:07:04,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2024-11-16 10:07:04,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1732. [2024-11-16 10:07:04,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1715 states have (on average 1.457142857142857) internal successors, (2499), 1715 states have internal predecessors, (2499), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 10:07:04,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2529 transitions. [2024-11-16 10:07:04,519 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2529 transitions. Word has length 681 [2024-11-16 10:07:04,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:07:04,520 INFO L471 AbstractCegarLoop]: Abstraction has 1732 states and 2529 transitions. [2024-11-16 10:07:04,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 10:07:04,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2529 transitions. [2024-11-16 10:07:04,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2024-11-16 10:07:04,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:07:04,527 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:07:04,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-16 10:07:04,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-16 10:07:04,728 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:07:04,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:07:04,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2109875407, now seen corresponding path program 1 times [2024-11-16 10:07:04,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:07:04,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921698512] [2024-11-16 10:07:04,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:07:04,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:07:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:05,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-16 10:07:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:05,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-11-16 10:07:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:05,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-16 10:07:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:05,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-11-16 10:07:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:05,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-11-16 10:07:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:05,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2024-11-16 10:07:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:05,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2024-11-16 10:07:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:05,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2024-11-16 10:07:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:05,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2024-11-16 10:07:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:05,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2024-11-16 10:07:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:05,660 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-16 10:07:05,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:07:05,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921698512] [2024-11-16 10:07:05,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921698512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:07:05,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471451625] [2024-11-16 10:07:05,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:07:05,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:07:05,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:07:05,663 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:07:05,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 10:07:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:06,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 3343 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-16 10:07:06,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:07:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 276 proven. 128 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-16 10:07:07,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:07:08,403 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-11-16 10:07:08,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471451625] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:07:08,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:07:08,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2024-11-16 10:07:08,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026932141] [2024-11-16 10:07:08,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:07:08,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 10:07:08,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:07:08,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 10:07:08,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-16 10:07:08,407 INFO L87 Difference]: Start difference. First operand 1732 states and 2529 transitions. Second operand has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 10:07:08,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:07:08,747 INFO L93 Difference]: Finished difference Result 2545 states and 3722 transitions. [2024-11-16 10:07:08,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 10:07:08,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 682 [2024-11-16 10:07:08,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:07:08,753 INFO L225 Difference]: With dead ends: 2545 [2024-11-16 10:07:08,753 INFO L226 Difference]: Without dead ends: 1732 [2024-11-16 10:07:08,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1387 GetRequests, 1369 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-11-16 10:07:08,755 INFO L432 NwaCegarLoop]: 847 mSDtfsCounter, 899 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 10:07:08,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 1705 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 10:07:08,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2024-11-16 10:07:08,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1732. [2024-11-16 10:07:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1715 states have (on average 1.4565597667638484) internal successors, (2498), 1715 states have internal predecessors, (2498), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 10:07:08,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2528 transitions. [2024-11-16 10:07:08,787 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2528 transitions. Word has length 682 [2024-11-16 10:07:08,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:07:08,788 INFO L471 AbstractCegarLoop]: Abstraction has 1732 states and 2528 transitions. [2024-11-16 10:07:08,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 10:07:08,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2528 transitions. [2024-11-16 10:07:08,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2024-11-16 10:07:08,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:07:08,795 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:07:08,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-16 10:07:08,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-16 10:07:08,996 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:07:08,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:07:08,997 INFO L85 PathProgramCache]: Analyzing trace with hash -51073114, now seen corresponding path program 1 times [2024-11-16 10:07:08,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:07:08,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311920728] [2024-11-16 10:07:08,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:07:08,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:07:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:09,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-16 10:07:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:09,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-11-16 10:07:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:09,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-16 10:07:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:09,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-11-16 10:07:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:09,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-11-16 10:07:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:09,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2024-11-16 10:07:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:09,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2024-11-16 10:07:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:09,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2024-11-16 10:07:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:09,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2024-11-16 10:07:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:09,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2024-11-16 10:07:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-16 10:07:09,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:07:09,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311920728] [2024-11-16 10:07:09,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311920728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:07:09,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389773936] [2024-11-16 10:07:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:07:09,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:07:09,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:07:09,764 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:07:09,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 10:07:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:10,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 3346 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-16 10:07:10,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:07:11,938 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 276 proven. 128 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-16 10:07:11,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:07:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-11-16 10:07:12,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389773936] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:07:12,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:07:12,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2024-11-16 10:07:12,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996471903] [2024-11-16 10:07:12,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:07:12,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 10:07:12,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:07:12,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 10:07:12,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-16 10:07:12,649 INFO L87 Difference]: Start difference. First operand 1732 states and 2528 transitions. Second operand has 5 states, 5 states have (on average 115.4) internal successors, (577), 5 states have internal predecessors, (577), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 10:07:13,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:07:13,005 INFO L93 Difference]: Finished difference Result 2545 states and 3720 transitions. [2024-11-16 10:07:13,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 10:07:13,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.4) internal successors, (577), 5 states have internal predecessors, (577), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 683 [2024-11-16 10:07:13,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:07:13,009 INFO L225 Difference]: With dead ends: 2545 [2024-11-16 10:07:13,009 INFO L226 Difference]: Without dead ends: 1732 [2024-11-16 10:07:13,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1389 GetRequests, 1371 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-11-16 10:07:13,011 INFO L432 NwaCegarLoop]: 847 mSDtfsCounter, 893 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 10:07:13,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 1705 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 10:07:13,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2024-11-16 10:07:13,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1732. [2024-11-16 10:07:13,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1715 states have (on average 1.4559766763848396) internal successors, (2497), 1715 states have internal predecessors, (2497), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 10:07:13,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2527 transitions. [2024-11-16 10:07:13,088 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2527 transitions. Word has length 683 [2024-11-16 10:07:13,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:07:13,089 INFO L471 AbstractCegarLoop]: Abstraction has 1732 states and 2527 transitions. [2024-11-16 10:07:13,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.4) internal successors, (577), 5 states have internal predecessors, (577), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 10:07:13,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2527 transitions. [2024-11-16 10:07:13,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2024-11-16 10:07:13,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:07:13,095 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:07:13,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-16 10:07:13,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:07:13,296 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:07:13,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:07:13,297 INFO L85 PathProgramCache]: Analyzing trace with hash -265231239, now seen corresponding path program 1 times [2024-11-16 10:07:13,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:07:13,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158842179] [2024-11-16 10:07:13,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:07:13,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:07:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:14,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-16 10:07:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:14,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-11-16 10:07:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:14,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-16 10:07:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:14,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-11-16 10:07:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:14,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-11-16 10:07:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:14,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2024-11-16 10:07:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:14,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2024-11-16 10:07:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:14,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2024-11-16 10:07:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:14,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2024-11-16 10:07:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:14,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2024-11-16 10:07:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:14,082 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-16 10:07:14,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 10:07:14,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158842179] [2024-11-16 10:07:14,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158842179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 10:07:14,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707845702] [2024-11-16 10:07:14,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:07:14,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:07:14,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 10:07:14,088 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 10:07:14,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 10:07:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 10:07:15,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 3349 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-16 10:07:15,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 10:07:16,244 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 276 proven. 128 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-16 10:07:16,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 10:07:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-11-16 10:07:17,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707845702] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 10:07:17,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 10:07:17,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2024-11-16 10:07:17,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359106839] [2024-11-16 10:07:17,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 10:07:17,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 10:07:17,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 10:07:17,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 10:07:17,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-16 10:07:17,126 INFO L87 Difference]: Start difference. First operand 1732 states and 2527 transitions. Second operand has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 10:07:17,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 10:07:17,522 INFO L93 Difference]: Finished difference Result 2545 states and 3718 transitions. [2024-11-16 10:07:17,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 10:07:17,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 684 [2024-11-16 10:07:17,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 10:07:17,525 INFO L225 Difference]: With dead ends: 2545 [2024-11-16 10:07:17,525 INFO L226 Difference]: Without dead ends: 1732 [2024-11-16 10:07:17,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1391 GetRequests, 1373 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-11-16 10:07:17,527 INFO L432 NwaCegarLoop]: 847 mSDtfsCounter, 881 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 10:07:17,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 1705 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 10:07:17,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2024-11-16 10:07:17,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1732. [2024-11-16 10:07:17,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1715 states have (on average 1.455393586005831) internal successors, (2496), 1715 states have internal predecessors, (2496), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 10:07:17,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2526 transitions. [2024-11-16 10:07:17,553 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2526 transitions. Word has length 684 [2024-11-16 10:07:17,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 10:07:17,554 INFO L471 AbstractCegarLoop]: Abstraction has 1732 states and 2526 transitions. [2024-11-16 10:07:17,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 10:07:17,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2526 transitions. [2024-11-16 10:07:17,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2024-11-16 10:07:17,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 10:07:17,560 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 10:07:17,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-16 10:07:17,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 10:07:17,760 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 10:07:17,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 10:07:17,761 INFO L85 PathProgramCache]: Analyzing trace with hash -111030817, now seen corresponding path program 1 times [2024-11-16 10:07:17,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 10:07:17,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498123429] [2024-11-16 10:07:17,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 10:07:17,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 10:07:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat